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1.
Lancet Respir Med ; 2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38705167

RESUMO

BACKGROUND: Morbidity and mortality in pulmonary arterial hypertension (PAH) remain high. Activation of platelet-derived growth factor receptor, colony stimulating factor 1 receptor, and mast or stem cell growth factor receptor kinases stimulates inflammatory, proliferative, and fibrotic pathways driving pulmonary vascular remodelling in PAH. Seralutinib, an inhaled kinase inhibitor, targets these pathways. We aimed to evaluate the efficacy and safety of seralutinib in patients with PAH receiving standard background therapy. METHODS: The TORREY trial was a phase 2, randomised, multicentre, multinational, double-blind, placebo-controlled study. Patients with PAH from 40 hospital and community sites were randomly assigned 1:1 via interactive response technologies to receive seralutinib (60 mg twice daily for 2 weeks, then increased to 90 mg twice daily as tolerated) or placebo by dry powder inhaler twice daily for 24 weeks. Randomisation was stratified by baseline pulmonary vascular resistance (PVR; <800 dyne·s/cm5 and ≥800 dyne·s/cm5). Patients were eligible if classified as WHO Group 1 PH (PAH), WHO Functional Class II or III, with a PVR of 400 dyne·s/cm5 or more, and a 6 min walk distance of between 150 m and 550 m. The primary endpoint was change in PVR from baseline to 24 weeks. Analyses for efficacy endpoints were conducted in randomly assigned patients (intention-to-treat population). Safety analyses included all patients who received the study drug. TORREY was registered with ClinicalTrials.gov (NCT04456998) and EudraCT (2019-002669-37) and is completed. FINDINGS: From Nov 12, 2020, to April 20, 2022, 151 patients were screened for eligibility, and following exclusions, 86 adults receiving PAH background therapy were randomly assigned to seralutinib (n=44; four male, 40 female) or placebo (n=42; four male, 38 female), and comprised the intention-to-treat population. At baseline, treatment groups were balanced except for a higher representation of WHO Functional Class II patients in the seralutinib group. The least squares mean change from baseline to week 24 in PVR was 21·2 dyne·s/cm5 (95% CI -37·4 to 79·8) for the placebo group and -74·9 dyne·s/cm5 (-139·7 to -10·2) for the seralutinib group. The least squares mean difference between the seralutinib and placebo groups for change in PVR was -96·1 dyne·s/cm5 (95% CI -183·5 to -8·8; p=0·03). The most common treatment-emergent adverse event in both treatment groups was cough: 16 (38%) of 42 patients in the placebo group; 19 (43%) of 44 patients in the seralutinib group. INTERPRETATION: Treatment with inhaled seralutinib significantly decreased PVR, meeting the primary endpoint of the study among patients receiving background therapy for PAH. FUNDING: Gossamer Bio.

2.
Ann Pharmacother ; : 10600280241232032, 2024 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-38361242

RESUMO

BACKGROUND: Preoperative amiodarone effects on postorthotopic heart transplant (OHT) outcomes remain controversial. OBJECTIVE: The purpose of this study was to determine the effect of cumulative pre-OHT amiodarone exposure on severe primary graft dysfunction (PGD). METHODS: We retrospectively reviewed adult OHT recipients between August 2012 and June 2018. Primary outcome was severe PGD in patients receiving amiodarone at 3, 6, and 12 months prior to OHT compared with those not receiving amiodarone. Secondary outcomes included intensive care unit (ICU) and hospital length of stay, duration of mechanical ventilation, early graft failure (EGF), mortality at 3, 6, and 12 months post-OHT, and 30-day incidence of postoperative tachyarrhythmias, bradycardia, permanent pacemaker implantation, and rejection. RESULTS: Incidence of severe PGD was 12.5% in those who received amiodarone compared to 6.8% in those who did not (14 vs 6, P = 0.18). Cumulative preoperative amiodarone significantly increased the odds of severe PGD at 3 months (odds ratio [OR]: 1.03; 95% confidence interval [CI]: 1.001-1.06; P = 0.044) and 6 months (OR: 1.02, 95% CI: 1.003-1.044; P = 0.024) in a multivariate logistic regression. Patients on amiodarone had significantly higher rates of postoperative bradycardia (13.4% vs 4.5%, P = 0.03). CONCLUSION AND RELEVANCE: A trend toward increased PGD was present in patients receiving preoperative amiodarone. This finding combined with the regression showing significantly increased odds of PGD with increasing 3 and 6 month cumulative amiodarone dose is clinically concerning. Escalation of care with pacemaker implantation was required more frequently in patients on pre-OHT amiodarone.

3.
Respir Med ; 218: 107374, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37532157

RESUMO

RATIONALE: Oral treprostinil slows disease progression and improves exercise capacity in pulmonary arterial hypertension; however, titration can be prolonged. Published data suggests prostacyclin-naïve patients achieve total daily oral treprostinil doses of about 6 mg by Week 16, while those on prior parenteral treprostinil reach higher doses at the same timepoint. OBJECTIVES: EXPEDITE (NCT03497689), a single-arm, multicenter study, assessed the efficacy of rapid parenteral treprostinil induction to quickly reach higher doses of oral treprostinil for the treatment of pulmonary arterial hypertension. METHODS: Parenteral treprostinil was titrated for 2-8 weeks, followed by cross-titration of oral treprostinil. The primary endpoint was percentage of patients reaching ≥12 mg daily of oral treprostinil at Week 16. Secondary endpoints included clinical changes from baseline to Week 16. RESULTS: Twenty-nine prostacyclin-naïve patients were included in efficacy analyses. At Week 16, the mean daily oral treprostinil dose was 16.4 mg; 79% of patients met the primary endpoint. From baseline to Week 16, median REVEAL Lite 2 score improved (decreased) from 6 to 3.5 (p = 0.0006). Statistically significant improvements were also seen in World Health Organization Functional Class, N-terminal-pro brain natriuretic peptide levels, 6-minute walk distance, right atrial area, Borg Dyspnea Score, and emPHasis-10 score. Favorable trends were seen in risk stratification, echocardiography parameters, disease symptoms, and treatment satisfaction. CONCLUSION: Short-course parenteral treprostinil induction resulted in oral treprostinil doses over twice those reported in de novo initiations and may be a useful approach to quickly achieve the therapeutic benefits of oral treprostinil.


Assuntos
Hipertensão Pulmonar , Hipertensão Arterial Pulmonar , Humanos , Anti-Hipertensivos , Epoprostenol , Hipertensão Pulmonar Primária Familiar/tratamento farmacológico , Hipertensão Pulmonar/tratamento farmacológico , Hipertensão Arterial Pulmonar/tratamento farmacológico , Resultado do Tratamento
4.
Pulm Circ ; 13(3): e12255, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37497167

RESUMO

Treprostinil is a prostacyclin analogue that targets multiple cellular receptors to treat pulmonary arterial hypertension (PAH). In certain scenarios, patients may require aggressive treprostinil titration. Several studies have demonstrated that higher doses of treprostinil lead to greater clinical benefit. Data supports successful transitions from parenteral to oral treprostinil; however, administration routes, transition duration, and transition setting vary in the real-world. The EXPEDITE clinical trial (NCT03497689) prospectively studied whether rapid parenteral treprostinil induction can be used to achieve high doses of oral treprostinil (total daily dose: ≥12 mg) in prostacyclin naïve PAH patients. Parenteral prostacyclin induction may be more appropriate for patients who need to reach therapeutic dosing more urgently than longer titration durations reported with conventional de novo oral treprostinil initiation. This summary provides strategies utilized in EXPEDITE. Parenteral treprostinil was initiated at 2 ng/kg/min intravenously or subcutaneously; clinicians determined the frequency and dose increment of up-titration. Two distinct transition schedules from parenteral to oral treprostinil were employed: rapid cross-titration in an inpatient setting (median: 2 days) or gradual cross-titration in an outpatient setting (median: 5 days). Patient status was closely monitored after transition; oral treprostinil dose was titrated to clinical effect and tolerability. Factors considered when individualizing dosing strategies included parenteral and oral treprostinil target doses, nursing support, patient education, medication counseling and adverse events management. EXPEDITE demonstrated the time to a therapeutic dose of oral treprostinil is significantly shorter when utilizing a short-term parenteral induction strategy and may be suitable for patients requiring aggressive titration of oral treprostinil.

5.
Expert Opin Drug Discov ; 18(4): 445-466, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37013267

RESUMO

INTRODUCTION: Distal pulmonary arterial remodeling and elevated pulmonary vascular resistance are characteristic of pulmonary arterial hypertension (PAH). Current approved vasodilator-specific PAH therapy that includes phosphodiesterase-5 inhibitors, soluble guanylate cyclase stimulators, endothelin receptor antagonists, and prostanoids has demonstrated dramatic enhancement in functional capacity, quality of life, and invasive hemodynamics. However, none of these treatments are curative, underscoring the need to identify new pathophysiologic signaling pathways. AREAS COVERED: The author provides a comprehensive review on current knowledge and recent development in the understanding of PAH. Furthermore, the author discusses PAH potential genetic causes as well as novel molecular signaling pathways. This article also reviews the currently approved PAH specific therapy based on pivotal clinical trials and ongoing clinical trials using novel compounds that specifically target PAH pathogenesis. EXPERT OPINION: The discovery of novel signaling pathways - growth factors, tyrosine kinases, BMPs, estrogen, and serotonin - involved in the PAH pathobiology will lead within the next 5 years to the approval of new therapeutic agents targeting these different pathways. If proven beneficial, these new agents may reverse or at least prevent the progression of this devastating and lethal disease.


Assuntos
Hipertensão Pulmonar , Hipertensão Arterial Pulmonar , Humanos , Hipertensão Arterial Pulmonar/complicações , Hipertensão Arterial Pulmonar/tratamento farmacológico , Hipertensão Pulmonar/tratamento farmacológico , Hipertensão Pulmonar/etiologia , Qualidade de Vida , Antagonistas dos Receptores de Endotelina/uso terapêutico , Transdução de Sinais
6.
JACC Case Rep ; 7: 101716, 2023 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-36776796

RESUMO

1,1-Difluoroethane (DFE) cardiomyopathy results from the direct inhalation of toxic halogenated hydrocarbons. We present a case series of acute DFE cardiomyopathy illustrating the typical presentation of severe DFE cardiomyopathy along with a detailed description of its mechanism of injury. (Level of Difficulty: Advanced.).

7.
Heart Lung ; 59: 44-51, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36724588

RESUMO

BACKGROUND: Heart failure is a major health problem with significant economic burden in the United States. Educating heart failure dyads (heart failure patient and informal caregiver) is a relatively new domain and is being proposed by providers, policy makers, and third-party payors. Nurse-led dyad education can improve quality of life and reduce hospital admissions in the heart failure population. OBJECTIVES: This integrative literature review focused on evaluating design, delivery content, and outcomes of nurse-led dyadic educational interventions. METHODS: PubMed, CINAHL, Cochrane, and Google Scholar databases (1999 -2022) were searched for quantitative and qualitative studies that included these search terms: heart failure, dyads, nonmedical caregivers, caregivers, randomized controlled trials, nurse-led education, education. RESULTS: The search yielded 92 articles. The results included seven randomized controlled trials and one pilot study conducted from 2005 to 2017. Sample sizes ranged from 20 to 155 dyads. Dyads who received education interventions had positive outcomes. Face-to-face coaching provided stronger outcomes. Interventions varied in length from baseline to three months, with post-intervention follow-ups from one to 12 months. CONCLUSIONS: A paucity of studies of nurse-led heart failure dyadic educational interventions have been reported in the literature. To advance the science and decrease heart failure readmissions, greater efforts to study and incorporate education and support for heart failure dyads is needed, along with assessment of both patient and caregiver outcomes.


Assuntos
Cuidadores , Insuficiência Cardíaca , Humanos , Qualidade de Vida , Papel do Profissional de Enfermagem , Projetos Piloto , Insuficiência Cardíaca/terapia
9.
Int J Artif Organs ; 45(11): 919-926, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35945816

RESUMO

INTRODUCTION: We aimed to assess the impact of digoxin use following left ventricular assist device (LVAD) implantation on clinical outcomes. METHODS: Patients implanted with continuous flow LVADs at a single academic medical center and survived to initial hospital discharge were included in the analysis (n = 346). Clinical events were captured at a maximum of 2 years of follow up. Digoxin use was defined as 30-day continuous use post-LVAD. Negative binomial regression and Kaplan-Meier method were used to assess the association between digoxin use and clinical outcomes. RESULTS: Mean age of the cohort was 56 years (±13) and 23% (79/346) were female sex. Digoxin was used in 144 patients (41.6%) for a median of 268 days (IQR 154, 616). Digoxin use was associated with a significant reduction in cumulative incidence of gastrointestinal bleeding (GIB) (15% vs 26%, p = 0.004). After adjusting for age, hypertension, post-operative hemoglobin, RDW, potassium, and GFR, and use of angiotensin receptor/neprilysin inhibitor, there remained a significant 47% reduction in GIB incidence in patients treated with digoxin. There was no significant difference in cumulative incidence in right ventricular failure (RVF) between the two groups. There was no difference in overall 2-year survival between groups. CONCLUSIONS: Digoxin use was associated with reduction in GIB events, but not in RVF or mortality. Further studies are needed to confirm these findings and to investigate optimal timing and patient population.


Assuntos
Insuficiência Cardíaca , Coração Auxiliar , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Digoxina/efeitos adversos , Hemorragia Gastrointestinal/etiologia , Coração Auxiliar/efeitos adversos , Hemoglobinas , Neprilisina , Potássio , Receptores de Angiotensina , Estudos Retrospectivos , Fatores de Risco , Adulto , Idoso
10.
Transplant Direct ; 7(10): e752, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34514107

RESUMO

Although pulmonary function testing (PFT) is typically performed for heart transplant evaluation, the prognostic utility of PFTs after transplantation is unknown. We evaluated whether PFT parameters were correlated with outcomes following heart transplantation. METHODS: International Society for Heart and Lung Transplantation Thoracic Organ Transplant Registry data were utilized. Survival was assessed using Kaplan-Meier method and compared via log-rank test. Cox proportional hazard modeling was used to evaluate univariate and multivariate predictors of survival. RESULTS: Eight hundred two patients pretransplant PFT data were available for evaluation. Forced expiratory volume in 1 s (FEV1) < 50% predicted (P < 0.0001), and forced vital capacity (FVC) < 50% predicted each had significantly higher mortality (P = 0.001) compared with patients with FEV1 or FVC 50%-80% or >80%. FEV1/FVC < 0.7 was not associated with increased mortality. FEV1 and FVC below 50% both predicted longer lengths of stay (P = 0.028 for FEV1 and P = 0.0075 for FVC). After adjusting for male gender, age, body mass index, smoking history, chronic obstructive pulmonary disease, creatinine, albumin, and total bilirubin, FEV1 < 50% (hazard ratio, 4.91; P < 0.0001; 95% confidence interval, 2.69-8.94) and FVC < 50% (hazard ratio, 2.75; P = 0.003; 95% confidence interval, 1.4-5.4) both remained independent predictors of mortality. CONCLUSIONS: Abnormal pulmonary function (FEV1 or FVC below 50% of predicted) pre-heart transplantation is associated with increased mortality and longer lengths of stay posttransplant.

11.
J Exp Pharmacol ; 13: 817-857, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34429666

RESUMO

Pulmonary arterial hypertension (PAH) is a progressive and devastating disease characterized by pulmonary artery vasoconstriction and vascular remodeling leading to vascular rarefaction with elevation of pulmonary arterial pressures and pulmonary vascular resistance. Often PAH will cause death from right heart failure. Current PAH-targeted therapies improve functional capacity, pulmonary hemodynamics and reduce hospitalization. Nevertheless, today PAH still remains incurable and is often refractory to medical therapy, underscoring the need for further research. Over the last three decades, PAH has evolved from a disease of unknown pathogenesis devoid of effective therapy to a condition whose cellular, genetic and molecular underpinnings are unfolding. This article provides an update on current knowledge and summarizes the progression in recent advances in pharmacological therapy in PAH.

12.
Cureus ; 13(7): e16520, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34430131

RESUMO

Pulmonary hypertension (PH) in patients with chronic obstructive pulmonary disease (COPD) is associated with an increase in the risk of COPD exacerbation, increased hospitalization, and worse survival in this patient population. No specific treatment is available for PH in COPD. However, reported out-of-proportion PH may benefit from a certain type of treatment. This study shows that the use of selexipag in the treatment of out-of-proportion PH in COPD patients was associated with an improvement in functional status evaluated by a six-minute walk test (6MWT) and a mean pulmonary artery pressure at 6 +/- 2 months of treatment.

13.
Am J Cardiol ; 153: 86-93, 2021 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-34246419

RESUMO

Heart Failure (HF) is a major cause of morbidity and mortality in the US. With aging of the US population, the public health burden of HF is enormous. We aimed to develop an ensemble prediction model for 30-day mortality after discharge using machine learning. Using an electronic medical records (EMR) database, all patients with a non-elective HF admission over 10 years (January 2001 - December 2010) within the Montefiore Medical Center (MMC) health system, in the Bronx, New York, were included. We developed an ensemble model for 30-day mortality after discharge and employed discrimination, range of prediction, Brier index and explained variance as metrics in assessing model performance. A total of 7,516 patients were included. The discrimination achieved by the ensemble model was higher 0.83 (95% CI: 0.80 to 0.87) compared to the benchmark model 0.79 (95% CI: 0.75 to 0.84). The ensemble model also exhibited a better range of prediction as well as a favorable profile with respect to the other metrics employed. In conclusion, an ensemble machine learning approach exhibited an improvement in performance compared to the benchmark logistic model in predicting all-cause mortality among HF patients within 30-days of discharge. Machine learning is a promising alternative approach for risk profiling of HF patients, and it enhances individualized patient management.


Assuntos
Regras de Decisão Clínica , Insuficiência Cardíaca , Hospitalização , Aprendizado de Máquina , Mortalidade , Idoso , Idoso de 80 Anos ou mais , Causas de Morte , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
14.
JACC Heart Fail ; 9(5): 360-370, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33839076

RESUMO

OBJECTIVES: The purpose of this study was to evaluate the effects of intravenous levosimendan on hemodynamics and 6-min walk distance (6MWD) in patients with pulmonary hypertension and heart failure with preserved ejection fraction (PH-HFpEF). BACKGROUND: There are no proven effective treatments for patients with PH-HFpEF. METHODS: Patients with mean pulmonary artery pressure (mPAP) ≥35 mm Hg, pulmonary capillary wedge pressure (PCWP) ≥20 mm Hg, and LVEF ≥40% underwent 6MWD and hemodynamic measurements at rest, during passive leg raise, and supine cycle exercise at baseline and after an open-label 24-h levosimendan infusion (0.1 µg/kg/min). Hemodynamic responders (those with ≥4 mm Hg reduction of exercise-PCWP) were randomized (double blind) to weekly levosimendan infusion (0.075 to 0.1 ug/kg/min for 24 h) or placebo for 5 additional weeks. The primary end point was exercise-PCWP, and key secondary end points included 6MWD and PCWP measured across all exercise stages. RESULTS: Thirty-seven of 44 patients (84%) met responder criteria and were randomized to levosimendan (n = 18) or placebo (n = 19). Participants were 69 ± 9 years of age, 61% female, and with resting mPAP 41.0 ± 9.3 mm Hg and exercise-PCWP 36.8 ± 11.3 mm Hg. Compared with placebo, levosimendan did not significantly reduce the primary end point of exercise-PCWP at 6 weeks (-1.4 mm Hg; 95% confidence interval [CI]: -7.8 to 4.8; p = 0.65). However, levosimendan reduced PCWP measured across all exercise stages (-3.9 ± 2.0 mm Hg; p = 0.047). Levosimendan treatment resulted in a 29.3 m (95% CI: 2.5 to 56.1; p = 0.033) improvement in 6MWD compared with placebo. CONCLUSIONS: Six weeks of once-weekly levosimendan infusion did not affect exercise-PCWP but did reduce PCWP incorporating data from rest and exercise, in tandem with increased 6MWD. Further study of levosimendan is warranted as a therapeutic option for PH-HFpEF. (Hemodynamic Evaluation of Levosimendan in Patients With PH-HFpEF [HELP]; NCT03541603).


Assuntos
Tolerância ao Exercício , Insuficiência Cardíaca , Feminino , Insuficiência Cardíaca/tratamento farmacológico , Hemodinâmica , Humanos , Masculino , Simendana , Volume Sistólico
15.
ASAIO J ; 67(3): 324-331, 2021 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-33627608

RESUMO

Gastrointestinal bleeding (GIB) is a common cause of morbidity among patients supported by left ventricular assist devices (LVADs). The aim of this study was to identify if pre-LVAD right ventricular (RV) dysfunction is associated with risk of GIB after LVAD implantation. Of 398 patients implanted with LVADs between July 2008 and July 2016, 130 (33%) developed GIB at a median of 2.6 months following LVAD implantation. Arteriovenous malformations (AVMs) were found in 42 (34%) GIB patients. Patients with GIB were older and more likely to have hypertension, diabetes, and ischemic cardiomyopathy. On pre-LVAD echocardiography, GIB patients had increased RV diastolic dimension (4.7 ± 0.8 vs. 4.4 ± 0.9 cm, p = 0.02), a higher rate of greater than mild tricuspid valve (TV) regurgitation (73 [60%] vs. 120 [47%], p = 0.006), and underwent TV repair more often (38 [30%] vs. 43 [16%], p = 0.0006) during LVAD implantation. After multivariable adjustment, preoperative greater than mild RV enlargement (hazard ratio [HR] 2.32, 95% CI 1.12-5.03; p = 0.03), TV regurgitation (HR 1.83, CI 1.02-3.44; p = 0.01), and TV repair (HR 3.76, confidence interval [CI] 1.02-4.44; p = 0.01) remained associated with risk of GIB. This finding was driven by the AVM-GIB subgroup. Preoperative RV enlargement and TV regurgitation are associated with post-LVAD AVM-related GIB.


Assuntos
Hemorragia Gastrointestinal/etiologia , Coração Auxiliar/efeitos adversos , Disfunção Ventricular Direita/complicações , Malformações Arteriovenosas/complicações , Feminino , Hemorragia Gastrointestinal/epidemiologia , Insuficiência Cardíaca/fisiopatologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Disfunção Ventricular Direita/epidemiologia
16.
J Vis Exp ; (168)2021 02 05.
Artigo em Inglês | MEDLINE | ID: mdl-33616109

RESUMO

Cardiogenic shock remains one of the most challenging clinical syndromes in modern medicine. Mechanical support is being increasingly used in the management of cardiogenic shock. Intra-aortic balloon pump (IABP) is one of the earliest and most widely used types of mechanical circulatory support. The device acts by external counterpulsation and uses systolic unloading and diastolic augmentation of aortic pressure to improve hemodynamics. Although IABP provides less hemodynamic support when compared with newer mechanical circulatory support devices, it can still be the mechanical support device of choice in appropriate situations because of its relative simplicity of insertion and removal, need for smaller size vascular access and better safety profile. In this review, we discuss the equipment, procedural and technical aspects, hemodynamic effects, indications, evidence, current status and recent advances in the use of IABP in cardiogenic shock.


Assuntos
Coração Auxiliar , Balão Intra-Aórtico/métodos , Choque Cardiogênico/terapia , Hemodinâmica , Humanos , Choque Cardiogênico/etiologia , Resultado do Tratamento
17.
ASAIO J ; 67(4): 405-410, 2021 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-32740125

RESUMO

While cytomegalovirus (CMV) reactivation occurs in immunocompetent patients who are critically ill and has been associated with worse outcomes, very few cases of CMV reactivation have been reported following left ventricular assist device (LVAD) implantation. We aimed to evaluate the incidence and risk factors for CMV reactivation following LVAD implantation. Retrospective chart review of patients who had undergone LVAD implantation between July 2004 and December 2018 was performed. Cases with CMV reactivation post-LVAD were randomly matched (1:2) by sex, LVAD type, and implant year with controls utilizing SAS macros. Fisher's exact and paired sample t-tests were performed to evaluate for differences between categorical and continuous variables, respectively. Days to reactivation post-LVAD implantation were calculated in cases, and the corresponding times post-LVAD implantation were determined in control patients for variable comparisons. Survival analysis was performed using the Kaplan-Meier method. Of the 349 patients reviewed, 208 (59.6%) patients were seropositive for CMV before LVAD implantation. Of these 208 patients, eight (3.8%) had CMV reactivation following LVAD implantation. The median time to CMV reactivation following LVAD implantation was 21.5 days (range, 6-177). Six (75%) patients had CMV viremia, and the other two had colitis and pneumonia without viremia. In comparison to controls, patients with CMV had higher creatinine levels (p = 0.039) and higher RDW (p = 0.05) and were more likely to have received steroids within the previous week (p = 0.028) and to have concurrent bacterial infection (p = 0.001). CMV reactivation following LVAD implantation is more frequent than expected. Early testing, diagnosis, and treatment in at-risk patients (i.e., renal failure, steroid use, elevated RDW) might improve clinical outcomes.


Assuntos
Infecções por Citomegalovirus/epidemiologia , Infecções por Citomegalovirus/etiologia , Coração Auxiliar/efeitos adversos , Ativação Viral , Adulto , Idoso , Estudos de Casos e Controles , Citomegalovirus/fisiologia , Infecções por Citomegalovirus/virologia , Feminino , Insuficiência Cardíaca/terapia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco
19.
Pharmacol Ther ; 214: 107576, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32417272

RESUMO

Pulmonary arterial hypertension (PAH) is a vascular disorder associated with high morbidity and mortality rate and is characterized by pulmonary vascular remodeling and increased pulmonary vascular resistance, ultimately resulting in right ventricular failure and death. Over the past few decades, significant advances in the understanding of the epidemiology, pathogenesis, and pathophysiology of pulmonary arterial hypertension have occured. This has led to the development of disease specific treatment including prostanoids, endothelin receptor antagonists, phosphodiesterase inhibitors, and soluble guanylate cyclase stimulators. These therapies significantly improve exercise capacity, quality of life, pulmonary hemodynamics, but none of the current treatments are actually curative and long-term prognosis remains poor. Thus, there is a clear need to develop new therapies. Several potential pharmacologic agents for the treatment of pulmonary arterial hypertension are under clinical development and some promising results with these treatments have been reported. These agents include tyrosine protein kinase inhibitors, rho-kinase inhibitors, synthetically produced vasoactive intestinal peptide, antagonists of the 5-HT2 receptors, and others. This article will review several of these promising new therapies and will discuss the current evidence regarding their potential benefit in pulmonary arterial hypertension.


Assuntos
Anti-Hipertensivos/uso terapêutico , Pressão Arterial/efeitos dos fármacos , Hipertensão Arterial Pulmonar/tratamento farmacológico , Artéria Pulmonar/efeitos dos fármacos , Animais , Anti-Hipertensivos/efeitos adversos , Humanos , Terapia de Alvo Molecular , Hipertensão Arterial Pulmonar/diagnóstico , Hipertensão Arterial Pulmonar/mortalidade , Hipertensão Arterial Pulmonar/fisiopatologia , Artéria Pulmonar/fisiopatologia , Resultado do Tratamento
20.
Semin Thorac Cardiovasc Surg ; 32(3): 467-472, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32057968

RESUMO

Left ventricular assist device (LVAD) deactivation may be considered in cases of left ventricular recovery, pump thrombosis, infection, and end-of-life palliation. Surgical pump explantation remains the principal method, but percutaneous deactivation presents a safe and effective alternative. We have developed a formal program for percutaneous LVAD deactivation within our advanced heart failure program including patient selection criteria, preprocedure testing, a procedural algorithm, and a postprocedure care plan. Patient selection for percutaneous LVAD deactivation required review by an interdisciplinary heart transplant team including reason for deactivation, cardiac function, surgical risk, and patient preference. All candidates underwent LVAD ramp studies with both transthoracic echocardiography and right heart catheterization assessment. Deactivation was performed under general anesthesia with transesophageal echocardiography guidance. Three Amplatzer Vascular Plug IIs (Abbott, St. Paul, MN) were deployed in the LVAD outflow cannula with the proximal edge of the third plug aligned with the aortic anastomosis of the graft as guided by angiography and 3-dimensional transesophageal echocardiography. In a separate procedure, the LVAD drive line was transected below the skin, which was closed surgically over the driveline stump. Anticoagulation was continued for at least 3 months. Since initiation in January 2017, our program has performed 7 percutaneous LVAD deactivation procedures. All procedures have been successful, 5 of the patients remain medically managed, and 2 have proceeded to heart transplant. Percutaneous LVAD deactivation provides an alternative to surgical explantation. A percutaneous LVAD deactivation program is an important component of an advanced heart failure program.


Assuntos
Insuficiência Cardíaca/terapia , Coração Auxiliar , Implantação de Prótese/instrumentação , Função Ventricular Esquerda , Adolescente , Adulto , Idoso , Feminino , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Desenho de Prótese , Falha de Prótese , Implantação de Prótese/efeitos adversos , Recuperação de Função Fisiológica , Fatores de Tempo , Resultado do Tratamento
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