Floating right heart thrombi: A pooled analysis of cases reported over the past 10years.

INTRODUCTION: Floating right heart thrombi (FRHTS) are a rare phenomenon associated with high mortality. Immediate treatment is mandatory, but optimal therapy is controversial. OBJECTIVE: To compare the clinical characteristics according to different treatment strategies and to identify predictors of mortality on patients with FRHTS. METHODS: We conducted a systematic search of reported clinical cases of TTRH from 2006 to 2016. RESULTS: 207 patients were analyzed, median age was 60years, 51.7% were men, 31.4% presented with shock. Pulmonary thromboembolism was present in 85% of the cases. The treatments administered were anticoagulation therapy in 44 patients (21.28%), surgical embolectomy in 89 patients (43%), thrombolytic therapy in 66 patients (31.8%), percutaneous thrombectomy in 3 patients (1.93%) and fibrinolytic in situ in 4 (1.45%). The overall mortality rate was 21.3%. The mortality associated with anticoagulation alone was higher than surgical embolectomy or thrombolysis (36.4 vs 18% vs 18.2%, respectively, p=0.03), and in percutaneous thrombectomy and fibrinolytics in situ was 0%. At multivariate analysis, only anticoagulation alone (odds ratio [OR] 2.4, IC 95% 1.07-5.4, p=0.03), and shock (OR 2.87 (IC 95% 1.3-5.9, p=0.005) showed a statistically significant effect on mortality. CONCLUSION: FRHTS represent a serious form of thromboembolism that requires rapid decisions to improve the survival. Anticoagulation as the only strategy does not seem to be sufficient, while thrombolysis and surgical thrombectomy show better and similar results. A proper individualization of the risk and benefits of both techniques is necessary to choose the most appropriate strategy for our patients.

High-Sensitivity Cardiac Troponin Levels in Supraventricular Tachyarrhythmias.

BACKGROUND: High-sensitivity cardiac troponin assays have provided a significant contribution for the early diagnosis of cardiovascular events. However, elevated cardiac troponin levels may occur in other clinical situations as supraventricular tachyarrhythmias with concerns about the mechanism of this elevation. OBJECTIVES AND METHODS: The goal of this study was to describe the performance of high-sensitivity cardiac troponin T (hs-cTnT) assay in patients presenting to the emergency department with a primary diagnosis of supraventricular tachyarrhythmia and to evaluate its relation with cardiovascular events during follow-up. RESULTS: One hundred patients were included; mean age was 64 ± 12 years and 59.8% were men. The most common arrhythmia at admission was atrial fibrillation (68%), followed by atrial flutter (16%) and reentrant tachycardia (16%). The results of the first determination of hs-cTnT were positive (>14 ng/L) in 44.2% of the patients and the second determination was positive in 50.7% of the cases. The variation between the first and the second troponin levels was 1 (0-5) ng/L, and was >7 ng/L in 24.6% of the cases, with a clear trend toward higher troponin values in reentrant tachycardias. Four events were reported at 30 days; in all the cases the patients had presented atrial fibrillation and there were no significant differences in hs-cTnT values. CONCLUSIONS: There are a significant number of patients with supraventricular tachyarrhythmias who present elevated hs-cTnT levels. The association of this elevation with cardiovascular events seems to be very low.

[Clopidogrel versus prasugrel in acute coronary syndrome treated with coronary angioplasty]. / Clopidogrel versus prasugrel en síndrome coronario agudo tratado con angioplastia.

Greater antithrombotic potency new antiplatelet agents have been added such as prasugrel (PR) and ticagrelor to the traditional use of clopidogrel (CL) in the treatment of acute coronary syndrome (ACS). This study was aimed at comparing the incidence of long term ischemic and hemorrhagic events in patients treated with CL or PR during hospitalization. Retrospective ACS data base analysis performed by our cardiology service was completed prospectively. There were consecutively included all patients with percutaneous coronary intervention (PCI) during hospitalization due to ACS from December 2011 thru December 2012. A total of 398 ACS patients who underwent PCI with stent implantation were recruited. No differences in cardiovascular related deaths were observed in both groups (PR 2.9% vs. CL 2.5%, p=0.48). PR group showed less re-infraction (1.9% vs. 6.8%, p=0.01) with more total bleedings (18.5% vs. 8.5%, p=0.001) and minor bleedings (12.4% vs. 3.4%, p<0.001) with no differences in major and life threatening bleedings (p=ns). Multivariate analysis showed that independent predictors of cardiovascular mortality were age (OR 1.08, CI 95% 1.02-1.16) and renal failure (OR 6.98, CI 95% 1.23-39.71). Independent predictors for total bleeding were age (OR 1.06, CI 95% 1.02-1.09),ST segment elevation myocardial infarction (OR 1.99, CI 95% 1.05-3.79), renal failure (OR 3.32, CI 95% 1.62-6.78) and prasugrel use (OR 3.97, CI 95% 1.87-8.41). Use of prasugrel, in the ACS that requires PCI with stent, is associated with a lower myocardial infarction a year after follow-up, and it also leads to an increase of milder hemorrhage. No significant differences were observed in the cardiovascular mortality of both groups.

Island analysis of low-activity dynamic speckles.

In this work we present a method to evaluate activity in low dynamic speckle patterns. It consists of binarizing the speckle image and analyzing the displacements and deformations of the resulting speckle grain regions, here called islands. Numerical simulations and controlled experiments were used to study the variations of the island features with the aim of finding a correlation with the activity of the speckle pattern. From the obtained results it was possible to conclude that the developed method can be useful for the analysis of low activity speckle patterns with the advantage of requiring only pairs of frames, thus permitting the assessment of nonstationary processes. In the case of stationary phenomena, so that stacks of frames registers are representative of them, dilute activity images can also be constructed.

Ischaemic and haemorrhagic risk distribution in real-life patients with acute coronary syndromes.

BACKGROUND: Effective treatment of non-ST-segment elevation acute coronary syndromes (NSTEACS) requires careful assessment of both ischaemic and bleeding risks. We aimed to analyse risk distribution and evaluate antiplatelet prescription behaviours in real-life settings. METHODS: Data from 1100 NSTEACS patients in Buenos Aires, Argentina, from the Buenos Aires I Registry, with a 15-month follow-up, were analysed. In-hospital and 6-month GRACE scores, CRUSADE, and Precise DAPT scores were calculated. RESULTS: The mean age was 65.4 ± 11.5 years with a majority being male (77.2%). In-hospital mortality was 2.7%, primarily due to cardiovascular causes (1.8%). Bleeding events occurred in 20.9% of patients, with 4.9% classified as ≥ BARC 3. Predominance of low bleeding (71.3%) and ischaemic (55.8%) risks on admission was observed. At 6 months, the low-risk Precise category (70.9%) and GRACE (44.1%) categories prevailed. Linear correlation analysis showed a moderately positive correlation (r = 0.61, p < .05) between ischaemic-haemorrhagic risks. Regarding the prescription of antiplatelet agents, in the low ischaemic-haemorrhagic risk group, there was a predominance of aspirin + clopidogrel (41.2%) over other high-potency antiplatelet regimens (aspirin + ticagrelor or prasugrel). In the low ischaemic and high haemorrhagic risk group, aspirin and clopidogrel were also predominant (58%). CONCLUSIONS: Our analysis underscores the significant relationship between ischaemic and haemorrhagic risks during NSTEACS hospitalisation. Despite the majority of patients falling into the low-intermediate risk category, the prescription of P2Y12 inhibitors in real-life settings does not consistently align with these risks.

Probability mapping images in dynamic speckle classification.

We propose the use of a learning procedure to identify regions of similar dynamics in speckle image sequences that includes more than one descriptor. This procedure is based on the application of a naïve Bayes statistical classifier comprising the use of several descriptors. The class frontiers can be depicted so that the proportion of identified regions may be measured. To demonstrate the results, assembly of an RGB image, where each plane (R, G, and B) is associated with a particular region (class), was labeled according to its biospeckle dynamics. A high brightness in one color means a high probability of the pixel belonging to the corresponding class, and vice versa.

Influence of Physicochemical Properties of Ni/Clinoptilolite Catalysts in the Hydrogenation of Acetophenone.

Heterogeneous catalytic hydrogenation is an interesting alternative to conventional methods that use inorganic hydrides. The hydrogenation of acetophenone under heterogeneous conditions with the supported catalysts based on Ni is the most useful due to its redox properties and lower cost. As is well-known, catalyst support can significantly affect catalyst performance. We have investigated the influence of various physical-chemical parameters on the selective reaction of the hydrogenation of acetophenone by using different nickel catalysts on clinoptilolite supports, in four different forms: natural, previously modified with NH3 (Ni/Z+NH4 +), with HNO3 (Ni/Z+H+), and thermally treated (Ni/Z 500 °C). In particular, our work focuses on determining the influence of the mentioned physical-chemical parameters on the percentages of conversion and the selectivity of the catalysis. This study aims to identify the combination of parameters that allows for obtaining the best catalytic results. The identification of the physical-chemical parameters that determine the percentages of conversion and selectivity allows us to design optimal catalysts.

[Blood glucose control during cardiac surgery. Report of the Emergency Council of the Argentine Society of Cardiology]. / Control de la glucemia en el postoperatorio de cirugía cardíaca. Informe del Consejo de Emergencias de la Sociedad Argentina de Cardiología.

Hyperglycemia after cardiac surgery is a common finding associated with the worse outcomes affecting both diabetic and non diabetic patients. Despite the large number of publications available, there is no universally accepted approach to this problem. In an initiative of the Emergency Council of the Argentine Society of Cardiology, local experts gathered to discuss the management of hyperglycemia after adult cardiac surgery. The main objective of the present paper is to summarize the current state of knowledge regarding glycemic control in postoperative cardiac surgery.

Design and rationale of the inferior vena CAVA and Lung UltraSound-guided therapy in Acute Heart Failure (CAVAL US-AHF Study): a randomised controlled trial.

BACKGROUND: Between 25% and 30% of patients hospitalised for acute heart failure (AHF) are readmitted within 90 days after discharge, mostly due to persistent congestion on discharge. However, as the optimal evaluation of decongestion is not clearly defined, it is necessary to implement new tools to identify subclinical congestion to guide treatment. OBJECTIVE: To evaluate if inferior vena cava (IVC) and lung ultrasound (CAVAL US)-guided therapy for AHF patients reduces subclinical congestion at discharge. METHODS: CAVAL US-AHF is a single-centre, single-blind randomised controlled trial designed to evaluate if an IVC and lung ultrasound-guided healthcare strategy is superior to standard care to reduce subclinical congestion at discharge. Fifty-eight patients with AHF will be randomised using a block randomisation programme that will assign to either lung and IVC ultrasound-guided decongestion therapy ('intervention group') or clinical-guided decongestion therapy ('control group'), using a quantitative protocol and will be classified in three groups according to the level of congestion observed: none or mild, moderate or severe. The treating physicians will know the result of the test and the subsequent adjustment of treatment in response to those findings guided by a customised therapeutic algorithm. The primary endpoint is the presence of more than five B-lines and/or an increase in the diameter of the IVC, with and without collapsibility. The secondary endpoints are the composite of readmission for HF, unplanned visit for worsening HF or death at 90 days, variation of pro-B-type natriuretic peptide at discharge, length of hospital stay and diuretic dose at 90 days. Analyses will be conducted as between-group by intention to treat. ETHICS AND DISSEMINATION: Ethical approval was obtained from the Institutional Review Board and registered in the PRIISA.BA platform of the Ministry of Health of the City of Buenos Aires. TRIAL REGISTRATION NUMBER: NCT04549701.

The impact of the COVID-19 pandemic on heart failure management: Global experience of the OPTIMIZE Heart Failure Care network.

During the COVID-19 pandemic, reductions in heart failure (HF) hospitalizations have been widely reported, and there is an urgent need to understand how HF care has been reorganized in countries with different infection levels, vaccination rates and healthcare services. The OPTIMIZE Heart Failure Care program has a global network of investigators in 42 countries, with first-hand experience of the impact of the pandemic on HF management in different care settings. The national coordinators were surveyed to assess: 1) the challenges of the COVID-19 pandemic for continuity of HF care, from both a hospital and patient perspective; 2) the organizational changes enacted to ensure continued HF care; and 3) lessons learned for the future of HF care. Contributions were obtained from 37 national coordinators in 29 countries. We summarize their input, highlighting the issues raised and using the example of three very different settings (Italy, Brazil, and Taiwan) to illustrate the similarities and differences across the OPTIMIZE program.

Performance of the European Society of Cardiology 0/1-hour algorithm in the diagnosis of myocardial infarction with high-sensitivity cardiac troponin: Systematic review and meta-analysis.

INTRODUCTION: A rapid rule-out or rule-in protocol based on the 0-hour/1-hour algorithm using high-sensitivity cardiac troponin (hs-cTn) is recommended by the European Society of Cardiology (ESC); recently multiple studies have validated it in their settings. We aimed to assess the diagnostic accuracy of the 2015 ESC guidelines for management of acute coronary syndrome in patients without ST-segment elevation 0-hour/1-hour algorithm using hs-cTn for the early rule-out and rule-in of acute myocardial infarction (AMI) on presentation. METHODS: Systematic searches were conducted using PubMed, the Cochrane Library and the International Clinical Trials Registry Platform to identify prospective studies from 2015 to October 2019 involving adults presenting to the emergency department with possible acute coronary syndrome in which hs-cTn measurements were obtained according to the ESC algorithm and AMI outcomes were adjudicated during the initial hospitalization. RESULTS: Eleven studies, involving 19,213 patients, were identified. Pooled prevalence of AMI during the index hospitalization was 11.3% (95% confidence interval (CI) 3.9-18.8%). Summary sensitivity and specificity in diagnosing AMI were 99% (95% CI 98-99%; I2 63%) and 91% (95% CI 91-92%; I2 96%) respectively. The summary positive likelihood ratio was 11.6 (95% CI 8.5-15.8; I2 97%) and the pooled likelihood ratio negative 0.02 (0.01-0.03; I2 52%). Cumulative all-cause mortality at 30 days in the rule-out group was 0.11%, and 2.8% in the rule-in group, and 30 days AMI in the rule-out group was 0.08%. CONCLUSION: The ESC 0-hour/1-hour algorithm using high-sensitivity cardiac troponin has high diagnostic accuracy; it allows safe rule-out as well as accurate rule-in of AMI, with low cumulative 30-day mortality and AMI in patients assigned the rule-out zone.

Performance of the European Society of Cardiology 0/1-hour algorithm in the diagnosis of myocardial infarction with high-sensitivity cardiac troponin: Systematic review and meta-analysis.

INTRODUCTION: A rapid rule-out or rule-in protocol based on the 0-hour/1-hour algorithm using high-sensitivity cardiac troponin (hs-cTn) is recommended by the European Society of Cardiology (ESC); recently multiple studies have validated it in their settings. We aimed to assess the diagnostic accuracy of the 2015 ESC guidelines for management of acute coronary syndrome in patients without ST-segment elevation 0-hour/1-hour algorithm using hs-cTn for the early rule-out and rule-in of acute myocardial infarction (AMI) on presentation. METHODS: Systematic searches were conducted using PubMed, the Cochrane Library and the International Clinical Trials Registry Platform to identify prospective studies from 2015 to October 2019 involving adults presenting to the emergency department with possible acute coronary syndrome in which hs-cTn measurements were obtained according to the ESC algorithm and AMI outcomes were adjudicated during the initial hospitalization. RESULTS: Eleven studies, involving 19,213 patients, were identified. Pooled prevalence of AMI during the index hospitalization was 11.3% (95% confidence interval (CI) 3.9-18.8%). Summary sensitivity and specificity in diagnosing AMI were 99% (95% CI 98-99%; I2 63%) and 91% (95% CI 91-92%; I2 96%) respectively. The summary positive likelihood ratio was 11.6 (95% CI 8.5-15.8; I2 97%) and the pooled likelihood ratio negative 0.02 (0.01-0.03; I2 52%). Cumulative all-cause mortality at 30 days in the rule-out group was 0.11%, and 2.8% in the rule-in group, and 30 days AMI in the rule-out group was 0.08%. CONCLUSION: The ESC 0-hour/1-hour algorithm using high-sensitivity cardiac troponin has high diagnostic accuracy; it allows safe rule-out as well as accurate rule-in of AMI, with low cumulative 30-day mortality and AMI in patients assigned the rule-out zone.

[Acute myocardial infarction in patients recovering from COVID-19 pneumonia]. / Infarto agudo de miocardio en pacientes convalecientes de neumonía por COVID-19.

Coronary involvement in COVID-19 infection usually presents as type 2 acute myocardial infarction (AMI), due to increased 02 consumption and reduction of oxygen supply, and less frequently as type 1 (STEMI). In that cases, thrombogenicity of the infection may contribute to acute coronary occlusion. We present 2 cases of middle-aged men, with few or none cardiovascular risk factors, who were in hospital during 10 days because pneumonia due to COVID-19 with good evolution. In the convalescent phase, one day after hospital discharge, and enoxaparin suspension, they went back to hospital because STEMI. Both were treated by direct angioplasty using pharmacologic stent. Discussion is related to treatment of AMI at discharge, if anticoagulation should be added to double antiplatelet therapy, and if any prophylactic antithrombotic treatment should be considered at discharge from COVID-19 pneumonia in some patients.

El compromiso coronario en la infección COVID-19 se presenta habitualmente como infarto agudo de miocardio (IAM) tipo 2, debido al aumento del consumo y reducción del aporte de oxígeno, y menos frecuentemente como IAM tipo 1, con supradesnivel del ST. Se cree que estos últimos pueden tener relación con la trombogenicidad de la infección. Se presentan dos casos de varones de mediana edad, con pocos o sin factores de riesgo cardiovasculares, que luego de 10 días de internación por neumonía debida a COVID-19 con buena evolución, presentaron IAM con supradesnivel del ST en fase de convalecencia, al día siguiente del alta hospitalaria y de la suspensión de enoxaparina profiláctica. Ambos fueron tratados mediante angioplastia directa con stent farmacológico. Se discute cuál debiera ser el tratamiento al alta del IAM, si agregar anticoagulación a la doble antiagregación plaquetaria y también considerar algún tratamiento antitrombótico profiláctico al alta de neumonía por COVID-19 en ciertos pacientes.

The HEART score in the era of the European Society of Cardiology 0/1-hour algorithm.

BACKGROUND: The European Society of Cardiology's 0/1-hour algorithm improves the early triage of patients towards "rule-out" or "rule-in" of non-ST-segment elevation myocardial infarction. The HEART score is a risk stratification tool for patients with undifferentiated chest pain. We sought to evaluate the performance of the European Society of Cardiology 0/1-hour algorithm and the HEART score to evaluate chest pain patients in the emergency department. METHODS: In this prospective study, we applied the European Society of Cardiology 0/1-hour algorithm and the HEART score in 1355 consecutive patients who presented to the emergency department with symptoms suggestive of acute coronary syndrome without ST-segment elevation. Patients were followed for non-ST-segment elevation myocardial infarctions and major adverse cardiac events at 30 days: death, non-ST-segment elevation myocardial infarction, or unplanned coronary revascularization. RESULTS: The European Society of Cardiology 0/1-hour algorithm classified 921 (68.0%) patients as "rule-out" and the HEART score classified 686 (50.6%) patients as "low-risk". The 30-day incidence of non-ST-segment elevation myocardial infarctions was 0.32% in the European Society of Cardiology 0/1-hour algorithm "rule-out" patients versus 0.29% in the HEART score "low-risk" patients (p=0.75). The rate of major adverse cardiac events was 7.7% in the European Society of Cardiology 0/1-hour algorithm "rule-out" patients versus 1.1% in the HEART score "low-risk" patients (p<0.001). CONCLUSION: The European Society of Cardiology 0/1-hour algorithm identified more patients with low risk of non-ST-segment elevation myocardial infarctions at 30 days whereas for major adverse cardiac events, the HEART score had a greater capacity to detect low-risk patients.

Vortex analysis in dynamic speckle images.

Optical vortex analysis has become an important tool in optical metrology. It has been shown to be able to measure small displacements with up to nanometric precision. We analyze optical vortex behavior in dynamic speckle patterns with the boiling phenomenon. We first study translational patterns with boiling and we find the limitations of the optical vortex metrology. Pure boiling patterns are also evaluated and we find a quantitative descriptor for the activity. We also observe that vortices exhibit a Brownian motion in pure boiling patterns. Numerical and experimental results are shown.

Differences in the extent of fibrosis in obstructive and nonobstructive hypertrophic cardiomyopathy.

AIMS: Left ventricular outflow tract (LVOT) obstruction is a key feature of hypertrophic cardiomyopathy (HCM) that identifies patients at increased risk of adverse outcomes. Previous studies have hypothesized that LVOT obstruction enhances myocardial fibrosis and increases left ventricular (LV) filling pressures, producing greater clinical deterioration. However, this hypothesis has not been demonstrated in a clinical cohort comparing obstructive and nonobstructive patients. METHODS: Patients with HCM in whom Doppler echocardiography was performed within 30 days of cardiac MRI were enrolled, using the E/e' ratio to assess LV diastolic function and late gadolinium enhancement to evaluate the extent of fibrosis. Data were assorted according to LVOT obstruction status at rest. RESULTS: The current study enrolled 67 patients who were mostly middle-aged (56.8 ±â€Š13.2 years old) men (75%) with preserved ejection fraction. Obstructive HCM presented a significant association with a high fibrosis extent [odds ratio (OR) 3.33; P = 0.034] which was maintained after adjusting for sex and age (OR 4.37; P = 0.016) but not for maximum LV wall thickness (OR 2.13; P = 0.225). Obstructive HCM was also associated with a clinically significant E/e' ratio more than 14 (OR 7.8; P = 0.001) which decreased slightly after adjusting for age, sex and maximum LV thickness (OR 6.54; P = 0.014). There was a significant association between an E/e' ratio more than 14 and the extent of fibrosis (OR 1.29; P < 0.001) which was maintained after adjusting for age, sex and maximum LV wall thickness (OR 1.36; P = 0.001). CONCLUSION: LVOT obstruction may play a role in the extent of fibrosis in HCM, possibly conditioning greater diastolic dysfunction.

Outcome of Applying the ESC 0/1-hour Algorithm in Patients With Suspected Myocardial Infarction.

BACKGROUND: The European Society of Cardiology (ESC) recommends the 0/1-h algorithm for rapid triage of patients with suspected non-ST-segment elevation myocardial infarction (MI). However, its impact on patient management and safety when routinely applied is unknown. OBJECTIVES: This study sought to determine these important real-world outcome data. METHODS: In a prospective international study enrolling patients presenting with acute chest discomfort to the emergency department (ED), the authors assessed the real-world performance of the ESC 0/1-h algorithm using high-sensitivity cardiac troponin T embedded in routine clinical care and its associated 30-day rates of major adverse cardiac events (MACE) (the composite of cardiovascular death and MI). RESULTS: Among 2,296 patients, non-ST-segment elevation MI prevalence was 9.8%. In median, 1-h blood samples were collected 65 min after the 0-h blood draw. Overall, 94% of patients were managed without protocol violations, and 98% of patients triaged toward rule-out did not require additional cardiac investigations including high-sensitivity cardiac troponin T measurements at later time points or coronary computed tomography angiography in the ED. Median ED stay was 2 h and 30 min. The ESC 0/1-h algorithm triaged 62% of patients toward rule-out, and 71% of all patients underwent outpatient management. Proportion of patients with 30-day MACE were 0.2% (95% confidence interval: 03% to 0.5%) in the rule-out group and 0.1% (95% confidence interval: 0% to 0.2%) in outpatients. Very low MACE rates were confirmed in multiple subgroups, including early presenters. CONCLUSIONS: These real-world data document the excellent applicability, short time to ED discharge, and low rate of 30-day MACE associated with the routine clinical use of the ESC 0/1-h algorithm for the management of patients presenting with acute chest discomfort to the ED.