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1.
Monaldi Arch Chest Dis ; 94(1)2023 Apr 19.
Article in English | MEDLINE | ID: mdl-37074089

ABSTRACT

This study sought to compare the morbidity and mortality of redo aortic valve replacement (redo-AVR) versus valve-in-valve trans-catheter aortic valve implantation (valve-in-valve TAVI) for patients with a failing bioprosthetic valve. A multicenter UK retrospective study of redo-AVR or valve-in-valve TAVI for patients referred for redo aortic valve intervention due to a degenerated aortic bioprosthesis. Propensity score matching was performed for confounding factors. From July 2005 to April 2021, 911 patients underwent redo-AVR and 411 patients underwent valve-in-valve TAVI. There were 125 pairs for analysis after propensity score matching. The mean age was 75.2±8.5 years. In-hospital mortality was 7.2% (n=9) for redo-AVR versus 0 for valve-in-valve TAVI, p=0.002. Surgical patients suffered more post-operative complications, including intra-aortic balloon pump support (p=0.02), early re-operation (p<0.001), arrhythmias (p<0.001), respiratory and neurological complications (p=0.02 and p=0.03) and multi-organ failure (p=0.01). The valve-in-valve TAVI group had a shorter intensive care unit and hospital stay (p<0.001 for both). However, moderate aortic regurgitation at discharge and higher post-procedural gradients were more common after valve-in-valve TAVI (p<0.001 for both). Survival probabilities in patients who were successfully discharged from the hospital were similar after valve-in-valve TAVI and redo-AVR over the 6-year follow-up (log-rank p=0.26). In elderly patients with a degenerated aortic bioprosthesis, valve-in-valve TAVI provides better early outcomes as opposed to redo-AVR, although there was no difference in mid-term survival in patients successfully discharged from the hospital.


Subject(s)
Aortic Valve Stenosis , Bioprosthesis , Heart Valve Prosthesis Implantation , Heart Valve Prosthesis , Humans , Aged , Aged, 80 and over , Aortic Valve/surgery , Heart Valve Prosthesis Implantation/adverse effects , Retrospective Studies , Aortic Valve Stenosis/surgery , Catheters , United Kingdom/epidemiology , Treatment Outcome , Risk Factors , Bioprosthesis/adverse effects
2.
Catheter Cardiovasc Interv ; 99(4): 1172-1180, 2022 03.
Article in English | MEDLINE | ID: mdl-34792842

ABSTRACT

BACKGROUND: The ACURATE neo™ is a novel, second-generation self-expanding supra-annular transcatheter heart valve (THV). The objective of this multi-centre registry is to assess the safety, clinical utility, and impact of 'learning-curve-experience' (LCE) on transcatheter aortic valve replacement outcomes in the United Kingdom (UK) and Ireland. METHODS: We prospectively collected data from seven ACURATE neo™ THV implanting centres (n = 484) between February 2016 and November 2020. We compared mortality rates and outcomes in the LCE group (n = 120) compared to next successive 120 cases. RESULTS: The mean age of the cohort was 81.9(SD: 6.1) years and the majority were in the moderate risk category (EuroSCORE-II):3.3(SD: 3). The 97.5% of cases were performed under local anesthetic. The valve was successfully deployed in 98.8% of cases. The survival rate at 30 days was 97.9%. The incidence of stroke was 2.5%. Life threatening bleeding occurred in 0.6% of cases and vascular access complications occurred in 21 (4.3%) patients. Implantation-related conduction abnormalities occurred in 8.3% but only 5.6% required a PPM. The successful valve deployment occurred in 96% of the patients in the LCE group compared to 100% in the other group (p = 0.04; OR-2[CI 1.7-2.3]). The mortality rates at 30 days (1.7% vs. 1.7%) and 1 year (1.9% vs. 2.7%) were comparable between the two groups. CONCLUSIONS: This study represents the largest published UK and Ireland real-world experience of the ACURATE neo™ valve. The procedural success rates and safety outcomes were excellent and endorse its utility in clinical practice. The LCE appears to have an impact on the successful valve deployment but without translating into short-term or long-term outcomes.


Subject(s)
Aortic Valve Stenosis , Heart Valve Prosthesis , Transcatheter Aortic Valve Replacement , Aged, 80 and over , Aortic Valve/diagnostic imaging , Aortic Valve/surgery , Aortic Valve Stenosis/surgery , Humans , Ireland , Prosthesis Design , Registries , Transcatheter Aortic Valve Replacement/adverse effects , Treatment Outcome , United Kingdom
3.
Anesth Analg ; 133(2): 292-302, 2021 08 01.
Article in English | MEDLINE | ID: mdl-33684086

ABSTRACT

BACKGROUND: Prospective, single-center trials have shown that the implementation of the Kidney Disease: Improving Global Outcomes (KDIGO) recommendations in high-risk patients significantly reduced the development of acute kidney injury (AKI) after surgery. We sought to evaluate the feasibility of implementing a bundle of supportive measures based on the KDIGO guideline in high-risk patients undergoing cardiac surgery in a multicenter setting in preparation for a large definitive trial. METHODS: In this multicenter, multinational, randomized controlled trial, we examined the adherence to the KDIGO bundle consisting of optimization of volume status and hemodynamics, functional hemodynamic monitoring, avoidance of nephrotoxic drugs, and prevention of hyperglycemia in high-risk patients identified by the urinary biomarkers tissue inhibitor of metalloproteinases-2 [TIMP-2] and insulin growth factor-binding protein 7 [IGFBP7] after cardiac surgery. The primary end point was the adherence to the bundle protocol and was evaluated by the percentage of compliant patients with a 95% confidence interval (CI) according to Clopper-Pearson. Secondary end points included the development and severity of AKI. RESULTS: In total, 278 patients were included in the final analysis. In the intervention group, 65.4% of patients received the complete bundle as compared to 4.2% in the control group (absolute risk reduction [ARR] 61.2 [95% CI, 52.6-69.9]; P < .001). AKI rates were statistically not different in both groups (46.3% intervention versus 41.5% control group; ARR -4.8% [95% CI, -16.4 to 6.9]; P = .423). However, the occurrence of moderate and severe AKI was significantly lower in the intervention group as compared to the control group (14.0% vs 23.9%; ARR 10.0% [95% CI, 0.9-19.1]; P = .034). There were no significant effects on other specified secondary outcomes. CONCLUSIONS: Implementation of a KDIGO-derived treatment bundle is feasible in a multinational setting. Furthermore, moderate to severe AKI was significantly reduced in the intervention group.


Subject(s)
Acute Kidney Injury/prevention & control , Cardiac Surgical Procedures/adverse effects , Guideline Adherence/standards , Insulin-Like Growth Factor Binding Proteins/urine , Patient Care Bundles/standards , Practice Guidelines as Topic/standards , Tissue Inhibitor of Metalloproteinase-2/urine , Acute Kidney Injury/diagnosis , Acute Kidney Injury/etiology , Acute Kidney Injury/urine , Aged , Biomarkers/urine , Europe , Feasibility Studies , Female , Humans , Male , Middle Aged , Predictive Value of Tests , Risk Assessment , Risk Factors , Time Factors , Treatment Outcome
4.
Cochrane Database Syst Rev ; 6: CD013002, 2020 06 04.
Article in English | MEDLINE | ID: mdl-32496607

ABSTRACT

BACKGROUND: Cardiogenic shock (CS) is a state of critical end-organ hypoperfusion due to a primary cardiac disorder. For people with refractory CS despite maximal vasopressors, inotropic support and intra-aortic balloon pump, mortality approaches 100%. Mechanical assist devices provide mechanical circulatory support (MCS) which has the ability to maintain vital organ perfusion, to unload the failing ventricle thus reduce intracardiac filling pressures which reduces pulmonary congestion, myocardial wall stress and myocardial oxygen consumption. This has been hypothesised to allow time for myocardial recovery (bridge to recovery) or allow time to come to a decision as to whether the person is a candidate for a longer-term ventricular assist device (VAD) either as a bridge to heart transplantation or as a destination therapy with a long-term VAD. OBJECTIVES: To assess whether mechanical assist devices improve survival in people with acute cardiogenic shock. SEARCH METHODS: We searched CENTRAL, MEDLINE (Ovid), Embase (Ovid) and Web of Science Core Collection in November 2019. In addition, we searched three trials registers in August 2019. We scanned reference lists and contacted experts in the field to obtain further information. There were no language restrictions. SELECTION CRITERIA: Randomised controlled trials on people with acute CS comparing mechanical assist devices with best current intensive care management, including intra-aortic balloon pump and inotropic support. DATA COLLECTION AND ANALYSIS: We performed data collection and analysis according to the published protocol. Primary outcomes were survival to discharge, 30 days, 1 year and secondary outcomes included, quality of life, major adverse cardiovascular events (30 days/end of follow-up), dialysis-dependent (30 days/end of follow-up), length of hospital stay and length of intensive care unit stay and major adverse events. We used the five GRADE considerations (study limitations, consistency of effect, imprecision, indirectness, and publication bias) to assess the quality of a body of evidence as it relates to the studies which contribute data to the meta-analyses for the prespecified outcomes Summary statistics for the primary endpoints were risk ratios (RR), hazard ratios (HRs) and odds ratios (ORs) with 95% confidence intervals (CIs). MAIN RESULTS: The search identified five studies from 4534 original citations reviewed. Two studies included acute CS of all causes randomised to treatment using TandemHeart percutaneous VAD and three studies included people with CS secondary to acute myocardial infarction who were randomised to Impella CP or best medical management. Meta-analysis was performed only to assess the 30-day survival as there were insufficient data to perform any further meta-analyses. The results from the five studies with 162 participants showed mechanical assist devices may have little or no effect on 30-day survival (RR of 1.01 95% CI 0.76 to 1.35) but the evidence is very uncertain. Complications such as sepsis, thromboembolic phenomena, bleeding and major adverse cardiovascular events were not infrequent in both the MAD and control group across the studies, but these could not be pooled due to inconsistencies in adverse event definitions and reporting. We identified four randomised control trials assessing mechanical assist devices in acute CS that are currently ongoing. AUTHORS' CONCLUSIONS: There is no evidence from this review of a benefit from MCS in improving survival for people with acute CS. Further use of the technology, risk stratification and optimising the use protocols have been highlighted as potential reasons for lack of benefit and are being addressed in the current ongoing clinical trials.


Subject(s)
Heart-Assist Devices , Shock, Cardiogenic/mortality , Shock, Cardiogenic/therapy , Acute Disease , Coronary Care Units/statistics & numerical data , Heart-Assist Devices/adverse effects , Humans , Length of Stay , Quality of Life , Renal Dialysis/statistics & numerical data
5.
Ann Vasc Surg ; 29(4): 841.e1-3, 2015.
Article in English | MEDLINE | ID: mdl-25744231

ABSTRACT

We report a case of leiomyosarcoma of the thoracic aorta in a 49-year-old male patient with history of hypertrophic cardiomyopathy. The only presenting symptom was back pain localized under the left scapula with the frequency and severity of the pain increasing with time. Imaging studies detected the presence of an aortic tumor. The tumor was excised en bloc, and an interposition graft was implanted. The histology showed a fully excised grade 3 leiomyosarcoma. This article discusses features of this rare condition.


Subject(s)
Aorta, Thoracic/pathology , Cardiomyopathy, Hypertrophic/complications , Leiomyosarcoma/pathology , Vascular Neoplasms/pathology , Aorta, Thoracic/diagnostic imaging , Aorta, Thoracic/surgery , Aortography/methods , Back Pain/etiology , Blood Vessel Prosthesis Implantation , Cardiomyopathy, Hypertrophic/diagnosis , Humans , Leiomyosarcoma/complications , Leiomyosarcoma/surgery , Male , Middle Aged , Neoplasm Grading , Tomography, X-Ray Computed , Treatment Outcome , Vascular Neoplasms/complications , Vascular Neoplasms/surgery
6.
Catheter Cardiovasc Interv ; 84(2): 303-5, 2014 Aug 01.
Article in English | MEDLINE | ID: mdl-22532498

ABSTRACT

Aortic root rupture during transcatheter aortic valve implantation (TAVI) is an uncommon but almost uniformly fatal complication. We describe a novel surgical management of this complication using a combination of pledgeted sutures and prolonged direct digital compression with biomatrix and lattice adjuncts. Furthermore, our patient underwent percutaneous coronary intervention with endothelial progenitor cell-capturing stents, which facilitated TAVI to be performed off clopidogrel therapy. We believe the use of these stents reduced the severity of hemorrhage following aortic root rupture and helped maintain vessel patency following prolonged hypotension.


Subject(s)
Aortic Diseases/complications , Aortic Rupture/surgery , Aortic Valve Stenosis/therapy , Cardiac Catheterization/adverse effects , Heart Valve Prosthesis Implantation/adverse effects , Hemostatic Techniques , Suture Techniques , Vascular Calcification/complications , Aged, 80 and over , Aortic Diseases/diagnosis , Aortic Rupture/diagnosis , Aortic Rupture/etiology , Aortic Valve Stenosis/complications , Aortic Valve Stenosis/diagnosis , Cardiac Catheterization/methods , Echocardiography, Doppler, Color , Echocardiography, Transesophageal , Female , Heart Valve Prosthesis Implantation/methods , Humans , Pressure , Treatment Outcome , Vascular Calcification/diagnosis
7.
Hellenic J Cardiol ; 67: 36-41, 2022.
Article in English | MEDLINE | ID: mdl-35798181

ABSTRACT

AIMS: COVID-19 had a devastating impact on patients with severe aortic stenosis (AS). Like many cardiac procedures, transcatheter aortic valve replacement (TAVR) services were suspended during the first wave of COVID-19. We took the opportunity to evaluate the clinical outcomes and identify any delays at different stages of the TAVR pathway during the COVID-19 pandemic. METHODS: Prospectively collected data on 210 consecutive TAVR patients between March 2019 and March 2021 were analysed. We compared the clinical outcomes and 30-day mortality rates of TAVR cases pre-pandemic and during the pandemic. We also looked to identify any time lags from the initial referral to respective stages of the TAVR workup. RESULTS: A total of 134 patients underwent TAVR prior to the national lockdown (March 2019-March 2020), compared to 76 patients during COVID-19 (April 2020-April 2021). Success rates of TAVR were similar (99% prior to the pandemic and 97.4% during COVID-19). The 30-day survival rates were 98.6% and 94.7%, respectively. Median length of stay post TAVR was 2 days during COVID-19 and 2.5 days prior to the pandemic (p = 0.064). Patients were seen quicker in clinic (median of 33 days) during COVID-19, compared to 51 days before COVID-19 (p = 0.044). No significant difference in times from referral to discussion at TAVR multidisciplinary team (MDT) meetings, CT Aortogram and TAVR implantation, in both groups. CONCLUSIONS: Reconfiguring the patient pathway during COVID-19 allowed TAVR to be performed safely, with a similar success rate and no excess complications or increased 30-day mortality. There proved to be no delay in the respective stages of patient TAVR workup, during the pandemic.


Subject(s)
Aortic Valve Stenosis , COVID-19 , Heart Valve Prosthesis Implantation , Transcatheter Aortic Valve Replacement , Aortic Valve/surgery , Aortic Valve Stenosis/surgery , COVID-19/epidemiology , Communicable Disease Control , Heart Valve Prosthesis Implantation/methods , Humans , Pandemics , Risk Factors , Tertiary Care Centers , Transcatheter Aortic Valve Replacement/methods , Treatment Outcome , United Kingdom/epidemiology
8.
Cureus ; 14(3): e22744, 2022 Mar.
Article in English | MEDLINE | ID: mdl-35386481

ABSTRACT

Introduction Balochistan is the largest of Pakistan's four provinces, yet it is also the poorest and most impoverished, particularly in terms of neonatal healthcare. In order to build and tailor strategies to improve neonatal outcomes, it is necessary to identify barriers and facilitators for interventions. Therefore, we conducted this study to provide an overview of neonatal healthcare quality and assess the structural capacity for the improvement and further development of neonatal healthcare facilities in Balochistan. Methods A descriptive, observational, cross-sectional study was conducted in Balochistan, a province of Pakistan. The survey was designed to assess the level of staffing and facilities in the neonatal health care units. Data were gathered through trained staff either by in-person visits to the facility or via telephone. Results A total of 177 facilities were assessed in 25 districts of Balochistan. A majority (88.7%) of the facilities were from the public sector. Birth and neonatal care services were provided at only 63 (36%) of the assessed facilities and only three had newborn intensive care units (NICUs) with a 1:5 staff: patient ratio. Unfortunately, all NICUs lacked the basic advanced facilities. None of the hospitals had an infection control policy or staff nor any training program for doctors. Conclusion In conclusion, healthcare facilities to manage neonatal patients requiring hospital care are extremely limited in Balochistan and the ones that are available have very limited resources. To improve the healthcare system in Balochistan, all stakeholders should be involved in the planning, decision-making, and implementation of healthcare programs at all levels to ensure sustainability and efficiency.

9.
J Invasive Cardiol ; 34(9): E660-E664, 2022 09.
Article in English | MEDLINE | ID: mdl-35916923

ABSTRACT

BACKGROUND: Guidelines endorse a heart team (HT) approach to standardize the decision-making process for patients with complex coronary artery disease (CAD). With percutaneous treatment options for complex CAD increasing, we hypothesized that practice had changed over the past decade-and that more individuals, previously deemed too high risk for intervention, would now be referred for either surgical or percutaneous revascularization. METHODS: This observational study was conducted at St Thomas' Hospital (London, United Kingdom). All patients discussed at HT meetings were recorded and treatment recommendations audited. A subset of historic cases was selected for blinded, repeat discussion. RESULTS: From April 2018 to 2019, a total of 52 HT meetings discussing 375 cases were held. Patients tended to be male, with a majority demonstrating multivessel CAD in the context of preserved left ventricular function. SYNTAX scores were balanced across the tertiles. Thirty-five percent of patients had at least 1 chronic total occlusion (mean J-CTO, 3 [interquartile range, 2-3]), affecting the right coronary artery in 60%. Fifteen historic patients with isolated CTOs were re-presented an average of 8 years later; only 3 patients received the same outcome, with 80% now receiving a recommendation for revascularization over medical therapy. CONCLUSIONS: A dedicated program supporting complex coronary intervention is associated with a change in treatment recommendations issued by the local HT. In line with international guidelines, this might indicate that any complex or multivessel CAD should be discussed at HT meetings with, ideally, the presence of CTO operators.


Subject(s)
Coronary Artery Disease , Coronary Occlusion , Percutaneous Coronary Intervention , Chronic Disease , Coronary Artery Bypass , Coronary Artery Disease/diagnosis , Coronary Artery Disease/surgery , Coronary Occlusion/diagnosis , Coronary Occlusion/surgery , Decision Making , Humans , Male , Percutaneous Coronary Intervention/adverse effects , Risk Factors , Treatment Outcome , United Kingdom
10.
Int J Cardiol ; 362: 14-19, 2022 09 01.
Article in English | MEDLINE | ID: mdl-35487318

ABSTRACT

Implications of elevated troponin on time-to-surgery in non-ST elevation myocardial infarction(NIHR Health Informatics Collaborative:TROP-CABG study). Benedetto et al. BACKGROUND: The optimal timing of coronary artery bypass grafting (CABG) in patients with non-ST elevation myocardial infarction (NSTEMI) and the utility of pre-operative troponin levels in decision-making remains unclear. We investigated (a) the association between peak pre-operative troponin and survival post-CABG in a large cohort of NSTEMI patients and (b) the interaction between troponin and time-to-surgery. METHODS AND RESULTS: Our cohort consisted of 1746 patients (1684 NSTEMI; 62 unstable angina) (mean age 69 ± 11 years,21% female) with recorded troponins that had CABG at five United Kingdom centers between 2010 and 2017. Time-segmented Cox regression was used to investigate the interaction of peak troponin and time-to-surgery on early (within 30 days) and late (beyond 30 days) survival. Average interval from peak troponin to surgery was 9 ± 15 days, with 1466 (84.0%) patients having CABG during the same admission. Sixty patients died within 30-days and another 211 died after a mean follow-up of 4 ± 2 years (30-day survival 0.97 ± 0.004 and 5-year survival 0.83 ± 0.01). Peak troponin was a strong predictor of early survival (adjusted P = 0.002) with a significant interaction with time-to-surgery (P interaction = 0.007). For peak troponin levels <100 times the upper limit of normal, there was no improvement in early survival with longer time-to-surgery. However, in patients with higher troponins, early survival increased progressively with a longer time-to-surgery, till day 10. Peak troponin did not influence survival beyond 30 days (adjusted P = 0.64). CONCLUSIONS: Peak troponin in NSTEMI patients undergoing CABG was a significant predictor of early mortality, strongly influenced the time-to-surgery and may prove to be a clinically useful biomarker in the management of these patients.


Subject(s)
Medical Informatics , Myocardial Infarction , Non-ST Elevated Myocardial Infarction , Aged , Aged, 80 and over , Coronary Artery Bypass/methods , Female , Humans , Male , Middle Aged , Myocardial Infarction/diagnosis , Myocardial Infarction/surgery , Non-ST Elevated Myocardial Infarction/diagnosis , Non-ST Elevated Myocardial Infarction/surgery , Treatment Outcome , Troponin
11.
Clin Exp Rheumatol ; 29(4 Suppl 67): S68-70, 2011.
Article in English | MEDLINE | ID: mdl-21968240

ABSTRACT

Behçet's syndrome is a chronic multisystem inflammatory disease characterised classically by recurrent oral and genital ulcers with ocular lesions. It can affect blood vessels of all sizes, but involves veins more commonly than arterie. The presence of chylothorax in Behçet's syndrome is rare, with only a few cases cited in the literature. The most likely pathogenesis is SVC thrombosis with obstruction of the orifice of the thoracic duct resulting in leakage of chyle from the pleural lymphatics into the pleural space. The majority of the previously reported cases were managed medically without surgical intervention. We believe that this report describes the first use of surgery to ligate the thoracic duct and create a pericardial window in a Behçet's syndrome with chylothorax and chylopericardium.


Subject(s)
Behcet Syndrome/complications , Chylothorax/surgery , Pericardial Effusion/surgery , Pericardial Window Techniques , Thoracic Duct/surgery , Chylothorax/diagnosis , Chylothorax/etiology , Drainage , Echocardiography , Humans , Ligation , Magnetic Resonance Imaging , Male , Pericardial Effusion/diagnosis , Pericardial Effusion/etiology , Thoracotomy , Tomography, X-Ray Computed , Young Adult
12.
J Card Surg ; 26(2): 181-8, 2011 Mar.
Article in English | MEDLINE | ID: mdl-21320163

ABSTRACT

BACKGROUND: Pulmonary embolism (PE) is a life-threatening complication, with a deceptive clinical presentation following coronary artery bypass grafting (CABG). METHODS: We identified 13 studies on PE in post-CABG patients, spanning a period of 34 years. RESULTS: The overall cumulative incidence of PE following CABG was 1.3% (111 PEs in 8553 CABGs). CONCLUSION: We suggest further prospective randomized studies to examine the effect of saphenous system vein grafting, and choice of low molecular weight heparin prophylaxis on the incidence of post-CABG PE.


Subject(s)
Coronary Artery Bypass/adverse effects , Coronary Disease/surgery , Pulmonary Embolism/etiology , Humans , Risk Factors
13.
J Infect Public Health ; 13(7): 1012-1017, 2020 Jul.
Article in English | MEDLINE | ID: mdl-31831398

ABSTRACT

BACKGROUND: Significant increase in rates of Clostridioides difficile associated diarrhea (CDI) has been reported globally but there remains a paucity of data from Saudi Arabia. METHODOLOGY: Prospective hospital-based surveillance for CDI using the Center for Disease Control (CDC) criteria was conducted from June to November 2015 in a tertiary healthcare facility in Riyadh, Saudi Arabia. RESULTS: During the surveillance period, 106 episodes of CDI were identified among 59 patients in 137,230 patient-days. The incidence of CDI was 3.5 per 10,000 patient days. Of the 106 episodes, 58% (n=61) were new cases, 12% (n=13) were recurrent cases and 30% (n=32) were duplicate cases. Majority of the new cases (n/N=43/61; 70%) were healthcare onset, followed by community onset (21%) and 8% were community-onset healthcare associated. No statistically significant change in trend was observed during the surveillance period. The most prevalent CDI risk factor was use of proton pump inhibitor (PPI) (92%) followed by prolonged use of antibiotics (77%). Pareto-analysis indicated that controlling for PPI use, prolong and multiple antibiotic exposure and prolonged hospitalization results in 80% CDI reduction. CONCLUSION: The findings indicate a low incidence of CDI. Multicenter studies are needed to elucidate the burden to CDI in the country.


Subject(s)
Clostridium Infections/epidemiology , Anti-Bacterial Agents/adverse effects , Anti-Bacterial Agents/therapeutic use , Clostridioides difficile/isolation & purification , Clostridium Infections/drug therapy , Community-Acquired Infections/epidemiology , Community-Acquired Infections/microbiology , Cross Infection/epidemiology , Cross Infection/microbiology , Diarrhea/epidemiology , Diarrhea/microbiology , Female , Humans , Incidence , Male , Prospective Studies , Risk Factors , Saudi Arabia/epidemiology , Tertiary Care Centers
14.
J Heart Valve Dis ; 16(6): 631-3, 2007 Nov.
Article in English | MEDLINE | ID: mdl-18095512

ABSTRACT

The case is presented of a fungal-origin endocarditis affecting the eustachian valve. During surgery for pulmonary and tricuspid valve replacement, a 54-year-old male with carcinoid disease was found to have a 3-cm vegetation attached to the eustachian valve. Histopathological assessment of the vegetation revealed the presence of Candida species. The patient made a good postoperative recovery and was continued on a three-month course of antifungal therapy.


Subject(s)
Candidiasis/complications , Carcinoid Heart Disease/complications , Endocarditis/microbiology , Heart Valves/microbiology , Carcinoid Heart Disease/microbiology , Endocarditis/complications , Endocarditis/diagnostic imaging , Humans , Male , Middle Aged , Ultrasonography , Vena Cava, Inferior/diagnostic imaging , Vena Cava, Inferior/microbiology
15.
Transplantation ; 81(8): 1157-64, 2006 Apr 27.
Article in English | MEDLINE | ID: mdl-16641602

ABSTRACT

BACKGROUND: Recent years have brought dramatic progress in the field of xenotransplantation, with the development of transgenic swine and various other means of overcoming the rejection mediated by xenoreactive antibodies. Although progress has been rapid with kidney and heart xenografts, progress with pulmonary xenografts has lagged behind. Recent findings have suggested that donor pulmonary intravascular macrophages may play a critical role in the hyperacute dysfunction of pulmonary xenografts. METHODS: The function of pulmonary xenografts from pigs depleted of pulmonary intravascular macrophages was compared with the function of xenografts from normal pigs. RESULTS: Pulmonary xenografts from pigs from which pulmonary intravascular macrophages were depleted survived (23.5+/-0.9 hours) about five times longer than normal (macrophage sufficient) xenografts (4.4+/-1.41 hours) (P< 0.0001). At 21 hours post-reperfusion, the left pulmonary arterial flow was 225.0+/-34 ml/min in lungs depleted of pulmonary intravascular macrophages, whereas all normal xenografts had failed. CONCLUSIONS: These findings indicate that donor macrophages play a critical role in pulmonary xenograft dysfunction. This finding has broad implications for xenotransplantation, suggesting that porcine macrophages might pose a barrier to the engraftment and function of a variety of porcine organ xenografts.


Subject(s)
Graft Survival , Lung Transplantation/adverse effects , Macrophages/physiology , Transplantation, Heterologous/adverse effects , Animals , Blood Pressure , Complement C5a/physiology , Endothelium, Vascular/physiology , Heart Rate , Lung/blood supply , Lung/pathology , Papio , Pulmonary Circulation , Swine , Vascular Resistance
16.
Cardiovasc Revasc Med ; 7(4): 237-9, 2006.
Article in English | MEDLINE | ID: mdl-17174871

ABSTRACT

Coronary thrombosis is a pivotal event in the pathogenesis of acute coronary syndromes and ischemic complications resulting from coronary intervention. Activation of the platelet glycoprotein (GP) IIb/IIIa receptor is the final common pathway leading to platelet aggregation, coronary thrombus formation, and myocardial ischemia. Inhibitors of platelet GP IIb/IIIa are potent agents to prevent progression to myocardial infarction and death. We prospectively surveyed the indications, frequency, and complications associated with the use of GP IIb/IIIa inhibitors in percutaneous coronary intervention in a tertiary center setting. A total of 170 patients underwent screening over a period of 6 weeks. One hundred four (61%) had coronary intervention, out of which eight (8%) had failed intervention. Glycoprotein IIb/IIIa inhibitors were used in 57 (55%) patients; 47 (45%) did not have any agent periprocedure. Eptifibatide was the most commonly used agent in 35 (33%), followed by abciximab in 19 (18%) and tirofiban in 3 (3%). Out of 57 patients in whom GP IIb/IIIa agents were used, 22 (38%) had visible intracoronary thrombus, 22 (38%) had diffuse disease, 8 (14%) had complex intervention, and 5 (9%) had diabetes. The overall incidence of complications was not increased by the use of GP IIb/IIIa inhibitors; serious complications were rare with the use of GP IIb/IIIa agents; no stroke, thrombocytopenia, gastrointestinal bleed, or death was recorded. The overall use in emergency settings was not associated with increased complications. Bradycardia and vomiting were more common with abciximab group, whereas puncture site pain was commoner in eptifibatide group.


Subject(s)
Angioplasty, Balloon, Coronary , Coronary Thrombosis/drug therapy , Platelet Glycoprotein GPIIb-IIIa Complex/therapeutic use , Abciximab , Antibodies, Monoclonal/adverse effects , Antibodies, Monoclonal/therapeutic use , Eptifibatide , Female , Humans , Immunoglobulin Fab Fragments/adverse effects , Immunoglobulin Fab Fragments/therapeutic use , Male , Peptides/adverse effects , Peptides/therapeutic use , Platelet Glycoprotein GPIIb-IIIa Complex/adverse effects , Prospective Studies , Tirofiban , Treatment Outcome , Tyrosine/adverse effects , Tyrosine/analogs & derivatives , Tyrosine/therapeutic use , United Kingdom
17.
Eval Program Plann ; 58: 42-48, 2016 10.
Article in English | MEDLINE | ID: mdl-27295526

ABSTRACT

BACKGROUND: Colonias are sub standardized and unincorporated areas located along the US-Mexico border, with severely lacking infrastructure. Residents have poor health and limited availability, accessibility and/or utilization of healthcare services in the region. METHODS: Using 2006-2007 community needs assessment (CNA) surveys collected by the Center for Housing and Urban Development of Texas A&M University, 410 randomly selected surveys from Hidalgo County, Texas were analyzed. Descriptive and spatial analyses were performed and Odds ratio (OR) was calculated. RESULTS: Out of 410 surveys, 333 were geo-coded to identify areas most in need of dental and vision care. Two hospitals existed within 5 miles radius of the mean centers for the two areas. Distance to health care facility was not statistically predictive of the need of dental care OR=0.96 (95% CI=0.855-1.078, p value=0.492) and vision care OR=1.083 (95% CI=0.968-1.212, p value=0.164). CONCLUSION: Integrating spatial analysis and CNA enhances planning to improve service accessibility and utilization in underserved areas.


Subject(s)
Health Services Accessibility/organization & administration , Needs Assessment/organization & administration , Program Development/methods , Spatial Analysis , Adult , Cluster Analysis , Delivery of Health Care/organization & administration , Female , Humans , Male , Middle Aged , Texas
18.
Ann Thorac Surg ; 101(4): 1454-63, 2016 Apr.
Article in English | MEDLINE | ID: mdl-26602006

ABSTRACT

BACKGROUND: Coronary artery bypass grafting (CABG) with conventional cardiopulmonary bypass (CPB) induces systemic inflammation. Miniaturized CPB may attenuate systemic inflammatory activation. The intracellular signaling pathways promoting inflammation in cardiac operations and the relative effects of CPB on these processes are uncertain. In this study, induction of reactive oxygen species (ROS) and activation of nuclear factor (NF)-κB, p38 mitogen-activated protein kinase (MAPK) within leukocytes, and leukocyte accumulation in cantharidin-induced blisters was compared in patients exposed to miniaturized CPB (mCPB) and those who underwent conventional CPB (cCPB). METHODS: Patients undergoing CABG were randomized to receive either cCPB (n = 13) or mCPB (n = 13). Blood samples were collected preoperatively and 5 times after initiating CPB (up to 5 hours) and analyzed by flow cytometry for intracellular markers of activation (ROS, p38-MAPK, and NF-κB phosphorylation). RESULTS: ROS in lymphocytes were elevated in cCPB compared with mCPB (p < 0.01), whereas ROS in granulocytes and monocytes were similar between groups. After initiation of CPB, p38-MAPK was higher in patients receiving cCPB compared with those receiving mCPB (p < 0.05). NF-κB phosphorylation in leukocyte subsets was similar in patients exposed to cCPB and those exposed to mCPB. Leukocyte accumulation in cantharidin-induced blisters, white cell counts, and serum C-reactive protein (CRP) was enhanced in response to cardiac operations, but no differences were observed between mCPB and cCPB groups. Postoperative serum creatinine levels were reduced in the mCPB group compared with the cCPB group (p < 0.05). CONCLUSIONS: Both p38-MAPK activation and ROS were attenuated with the use of mCPB compared with cCPB, providing a potential mechanism for reduced inflammation in association with CPB miniaturization.


Subject(s)
Cardiopulmonary Bypass/methods , Coronary Artery Bypass/methods , Inflammation Mediators/blood , Miniaturization/methods , NF-kappa B/blood , p38 Mitogen-Activated Protein Kinases/blood , Aged , C-Reactive Protein/metabolism , Cardiopulmonary Bypass/adverse effects , Cell Movement/physiology , Confidence Intervals , Coronary Artery Bypass/adverse effects , Coronary Stenosis/blood , Coronary Stenosis/surgery , Female , Follow-Up Studies , Humans , Inflammation/blood , Inflammation/prevention & control , Leukocytes/metabolism , Male , Middle Aged , Operative Time , Postoperative Complications/blood , Postoperative Complications/epidemiology , Postoperative Complications/physiopathology , Reactive Oxygen Species/blood , Risk Assessment , Treatment Outcome
19.
Circ Cardiovasc Qual Outcomes ; 9(4): 414-23, 2016 07.
Article in English | MEDLINE | ID: mdl-27407054

ABSTRACT

BACKGROUND: In the United Kingdom, cardiothoracic surgeons have led the outcome reporting revolution seen over the last 20 years. The objective of this survey was to assess cardiothoracic surgeons' opinions on the topic, with the aim of guiding future debate and policy making for all subspecialties. METHODS AND RESULTS: A questionnaire was developed using interviews with experts in the field. In January 2015, the survey was sent out to all consultant cardiothoracic surgeons in the United Kingdom (n=361). Logistic regression, bivariate correlation, and the χ(2) test were used to assess whether there was a relationship between answers and demographic variables. Free-text responses were analyzed using the grounded theory approach. The response rate was 73% (n=264). The majority of respondents (58.1% oppose, 34.1% favor, and 7.8% neither) oppose the public release of surgeon-specific mortality data and associate it with several adverse consequences. These include risk-averse behavior, gaming of data, and misinterpretation of data by the public. Despite this, the majority overwhelmingly supports publication of team-based measures of outcome. The free-text responses suggest that this is because most believe that quality of care is multifactorial and not represented by an individual's mortality rate. CONCLUSIONS: There is evident opposition to surgeon-specific mortality data among UK cardiothoracic surgeons who associate this with several unintended consequences. Policy makers should refine their strategy behind publication of surgeon-specific mortality data and possibly consider shift toward team-based results for which there will be the required support. Stakeholder feedback and inclusive strategy should be completed before introducing major initiatives to avoid unforeseen consequences and disagreements.


Subject(s)
Attitude of Health Personnel , Cardiac Surgical Procedures/mortality , Health Knowledge, Attitudes, Practice , Process Assessment, Health Care , Referral and Consultation , Surgeons/psychology , Thoracic Surgical Procedures/mortality , Access to Information , Cardiac Surgical Procedures/adverse effects , Cardiac Surgical Procedures/legislation & jurisprudence , Chi-Square Distribution , Data Accuracy , Hospital Mortality , Humans , Information Dissemination , Logistic Models , Policy Making , Process Assessment, Health Care/legislation & jurisprudence , Public Opinion , Quality Improvement , Quality Indicators, Health Care , Referral and Consultation/legislation & jurisprudence , Risk Assessment , Risk Factors , Surgeons/legislation & jurisprudence , Surveys and Questionnaires , Thoracic Surgical Procedures/adverse effects , Thoracic Surgical Procedures/legislation & jurisprudence , Treatment Outcome , United Kingdom
20.
Eur J Cardiothorac Surg ; 47(4): 679-83, 2015 Apr.
Article in English | MEDLINE | ID: mdl-25646396

ABSTRACT

OBJECTIVES: Since 1999 important widely publicized issues have affected morale in UK cardiothoracic (CT) surgery. Because more surgeons are needed, we sought to investigate whether these events have affected recruitment and demographic change in the specialty between 1999 and 2014. METHODS: We collected information on UK consultant CT surgeons using the SCTS public portal, the GMC Specialist Register and the NHS Annual Workforce Census via the Health & Social Care Information Centre. We analysed the demographics of UK CT surgeons with regard to country of primary medical qualification and ethnicity between 1999 and 2014. We compared the changes with other surgical specialties, cardiology and respiratory medicine. RESULTS: There has been a worrying decline in UK medical graduates entering the specialty and a 4-fold increase (282%) in consultant appointments from Europe. Whilst consultant numbers expanded by 83% overall, 59% of congenital heart surgeons, 46% of thoracic surgeons and 36% of adult cardiac surgeons are overseas graduates. It is found that 5% are female. Currently, only 32% of trainee surgeons are UK graduates. Of those receiving UK Certificate of Completion of Training in 2013, only 18% were UK graduates compared with 68% in 2000. Comparison with other specialties shows fewer UK graduates in CT surgery with the exception of Obstetrics and Gynaecology (52%). In cardiology, 77% are UK graduates with only 8% from Europe. CONCLUSIONS: Repeated negative messages have had a detrimental influence on recruitment. Because 55% of UK medical graduates, but less than 5% of CT surgeons are female, recruitment problems may worsen. Action is needed to restore interest in the specialty.


Subject(s)
Surgeons/statistics & numerical data , Thoracic Surgery/organization & administration , Thoracic Surgery/statistics & numerical data , Disclosure , Female , Humans , Male , Personnel Selection , Public Relations , United Kingdom
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