Hearts

Background: Patients with chronic heart failure often experience repeated acute exacerbations leading to high rates of rehospitalization. Therefore, the management of patients to prevent rehospitalization and retain their physical function is important. Brain natriuretic peptide (BNP) and N-terminal-pro BNP are used to estimate the conditions of patients with chronic heart failure, but some hospitals cannot measure these levels in real time. To overcome this, we used bioelectrical impedance analysis as an alternative. Methods and results: Between April 2017 and December 2019, we measured water balance in the outpatient department of Hirose Hospital in three groups: those who had been hospitalized for chronic heart failure (257 patients), those with chronic heart failure who had not been hospitalized (224 patients), and controls with other chronic diseases (275 patients). We found that water balance was significantly correlated to the history of hospitalization, and age was a confounding bias in this correlation, regardless of whether patients have been hospitalized with chronic heart failure. Moreover, patients who have high extracellular water content/total body water content ratios, even in a stable period, are at risk of becoming unstable and experiencing rehospitalization. Conclusion: Water balance monitoring could be a useful indicator to estimate patient condition in real time and predict improvement in chronic heart failure. This easy-to-use indicator may enable timely management of exacerbation of patient condition and reduce hospitalization events. Full article

While still considered a high-risk procedure, cardiac catheterization during the early postoperative period is being performed more frequently in the current era. Limited data are currently available concerning the acute hemodynamic consequences of these procedures. Therefore, the purpose of this study was to evaluate the safety/efficacy of cardiac catheterization performed within thirty days of congenital heart surgery. We completed a retrospective review of all catheterizations within 30 days of congenital heart surgery. Procedures were performed due to failure to progress or hemodynamic deterioration. There were 1873 congenital heart surgeries during the study period. One hundred and three (6.2%) patients with a median age of 124 days underwent catheterization. Sixty-three cases received interventions, and forty patients underwent diagnostic catheterization. Early cardiac catheterization did not show a significant immediate change in the hemodynamics or inotrope score. Survival for patients undergoing diagnostic Cath (81%) did not differ significantly from the intervention group (89%). Although cardiac catheterization was performed on patients at the highest risk for death in the postoperative period, catheter intervention did not increase the risk of death. Those patients undergoing catheter intervention did not seem to experience major adverse events but achieved mild improvement in tissue perfusion. Full article

A mature Caucasian patient, an endurance-trained triathlete (age group), had a routine ECG. The patient was immediately referred to Emergency based on supposed ECG abnormalities indicating a heart attack. This diagnosis was quickly dismissed based on no symptoms, heart rate of 50 BPM, athletic status, excellent health, and no prior cardiovascular problems. The patient had a history of severe white coat hypertension and underwent a further stress test and echocardiogram. The stress test showed exaggerated systolic blood pressures (over 225 mmHg) and high in-clinic basal blood pressures (160/90 mmHg), and the patient was diagnosed as hypertensive with exercise blood pressure close to stroke territory. He was told to stop racing, reduce training, and was prescribed antihypertensive drugs (which he did not take). Subsequent at-home 24 h (values close to 120/80 mmHg) and stress blood pressure measurements reversed that decision when considered in combination with an excellent echocardiogram result. The literature clearly describes endurance-trained athletes with systolic pressures over 225 mmHg Hg as being conditioned with no pathological aspects. Endurance-trained athletes should be examined as special cases in the field of cardiovascular medicine as trained physiological responses often present as cardiac abnormalities, and misdiagnosis can inappropriately change the athlete’s life. Full article

Heart failure (HF) is a syndrome suffered by more than 26 million people worldwide. SGLT2 inhibitors are drugs that have been shown to positively affect the management of HF patients, regardless of their diabetes status. A retrospective observational study was conducted on heart failure patients with reduced ejection fraction (HFrEF) enrolled at the HF clinic, who were on SGLT2 inhibitors. For these patients, baseline and follow-up data were collected and analyzed over time. Changes over time were quantified and statistical analysis was conducted to validate whether the changes were significant. After the screening of all the HF program patients, 24 met the inclusion criteria, with an average age of 68 years. Through the study, it was possible to find a statistically significant difference in the values of NT-ProBNP before and after adding a SGLT2 inhibitor in 14 patients (p = 0.0214). In addition, there was an improvement in the NYHA functional scale of 71% and no significant change in renal function or other laboratory values. Based on the studied parameters and throughout the clinical changes during the follow-up period, it was possible to establish an improvement in HFrEF patients on SGLT2 inhibitors as part of their therapy. Full article

Deep vein arterialization (DVA) is a therapeutic option in “no option” for revascularization chronic limb-threatening ischemia patients, creating an arteriovenous bypass between a proximal artery and a distal deep venous target at the ankle. Imaging plays a crucial role in peripheral arterial disease (PAD) patient management. We present the case of a 71-year-old PAD patient (Rutherford class 5) with focal gangrene of the first and second toes of the right foot, who was admitted to the vascular surgery department to undergo revascularization surgery by femoro-tibial artery bypass. During surgery a DVA was performed because of an unsatisfactory distal artery target. The post-operative computed tomography angiography showed the saphenous graft patency and opacification of distal foot veins. Subsequent angiography documented the presence of a large venous collateral, responsible for extensive early wash-out to leg venous vessels, which was then embolized. After two months, the patient underwent amputation of the right first and second necrotic toes at the level of the metatarsophalangeal joints. The post-operative course was excellent, with disappearance of pain at rest and good trophism of the surgical wound. Full article

Overdose of amlodipine, a dihydropyridine calcium channel blocker (CCB), is distinguished from other CCBs due to longer plasma half-life of 30 to 58 h. As current management strategies of CCB overdose are diverse and institution dependent, this retrospective observational study aimed to compare treatment and outcomes data extracted from published case reports of amlodipine overdose with a cohort of patients diagnosed with amlodipine overdose at an urban tertiary medical center. Particular attention was paid to the use of high dose insulin euglycemic therapy (HIET) in treatment of amlodipine overdose. Data was extracted from actual adult patients hospitalized for amlodipine overdose at an urban tertiary medical center up to 2018, and from case reports of amlodipine overdose published between 1997 and 2020. We found a tendency towards earlier and more frequent initiation of HIET over time in management of amlodipine overdose, facilitating hospital discharge. Given the lack of randomized controlled trials comparing vasopressors, HIET, or other therapies, optimal treatment for amlodipine overdose has yet to be definitively established. Based on currently available evidence, a reasonable approach to management of the hemodynamically unstable patient presenting with amlodipine overdose includes vasopressors and inotropes with earlier initiation of HIET. Full article

Objectives: To investigate primary and secondary surgical outcomes following transcaval repair (TCR), modified Warden repair, and transatrial repair techniques for partial anomalous pulmonary venous connections (PAPVCs) and sinus venosus atrial septal defects (ASDs). Methods: This is an observational cohort clinical study. Patients who underwent TCR, modified Warden repair, and transatrial surgical repair for PAPVC and ASD between January 2003 and October 2019 at our institution were included in the study. Patients had one of the surgical procedures based on the anatomy of the defect. Results: Ten patients, seven (70%) males and three (30%) females, were included in the analysis. Seven patients underwent TCR, two patients the modified Warden technique, and one patient underwent transatrial surgical repair. Mean age was 57 years ± 14.7. Mean EuroScore II was 3.4 ± 3.5. The baseline left ventricle ejection fraction was 45 ± 6.5%. No patient had previous stroke, pacemaker (PM) implantation, or myocardial infarction. Total cardiopulmonary bypass and cross-clamping time were 123 ± 72.5 and 100 ± 48.5 min, respectively. Mean mechanical ventilation, mean intensive care unit, and mean hospital length of stay for the transcaval, modified Warden, and transatrial groups were 4.6 ± 10.7, 5.7 ± 8.8, and 10.5 ± 9.2 days, respectively. Superior caval or pulmonary venous obstruction, sinus node dysfunction, and PM implantation were not present at follow-up. The patient who underwent transatrial repair had died at 5.5-year follow-up due to myocardial infarction. Total survival rate at 6 years was 90%. Conclusions: The findings from this study elicit that all three techniques have low postoperative morbidity and are feasible and reliable procedures. Full article

Background: Sacubitril/Valsartan use in heart failure has shown promising results in early trials. However, the effects on the overall functional capacity, exercise capacity, and quality of life are unknown. Aims: We aimed to understand the results of studies that attempted to measure these outcomes that affect the mobility and day-to-day life of these patients. Methods: MEDLINE, PubMed, PubMed Central (PMC), Google Scholar, ClinicalTrials.gov, and ISRCTN were explored to look for clinical trials relevant to the literature. Results: A total of three high-quality randomized controlled trials were discovered that evaluated the effect of sacubitril-valsartan on functional capacity, exercise capacity, or quality of life. All of them were industry-funded and revealed no statistical difference in the mentioned outcomes. No study measured peak oxygen uptake or ventilation/carbon dioxide ratio slope. Conclusion: Sacubitril-valsartan had minimal to no impact on functional capacity, exercise capacity, or quality of life. However, future prospective studies with more sensitive outcome measures should be conducted to validate the findings. Full article

This study aims to assess the whole-body physiological effects of wearing an exoskeleton during a one-hour standardized work task, utilizing the Cardiac Index (CI) as the target parameter. N = 42 young and healthy subjects with welding experience took part in the study. The standardized and abstracted one-hour workflow consists of simulated welding and grinding in constrained body positions and was completed twice by each subject, with and without an exoskeleton, in a randomized order. The CI was measured by Impedance Cardiography (ICG), an approved medical method. The difference between the averaged baseline measurement and the averaged last 10 min was computed for the conditions with and without an exoskeleton for each subject to result in $∆{\mathit{CI}}_{\mathit{without} \mathit{exo}}$ and $∆C{I}_{with exo}$. A significant difference between the conditions with and without an exoskeleton was found, with the reduction in CI when wearing an exoskeleton amounting to 10.51%. This result corresponds to that of previous studies that analyzed whole-body physiological load by means of spiroergometry. These results suggest a strong positive influence of exoskeletons on CI and, therefore, physiological load. At the same time, they also support the hypothesis that ICG is a suitable measurement instrument to assess these effects. Full article

Cardiovascular diseases are the leading cause of death worldwide, accounting for 32% of deaths globally and thus representing almost 18 million people according to WHO. Myocardial infarction, the most prevalent adult cardiovascular pathology, affects over half a million people in the USA according to the last records of the AHA. However, not only adult cardiovascular diseases are the most frequent diseases in adulthood, but congenital heart diseases also affect 0.8–1.2% of all births, accounting for mild developmental defects such as atrial septal defects to life-threatening pathologies such as tetralogy of Fallot or permanent common trunk that, if not surgically corrected in early postnatal days, they are incompatible with life. Therefore, both congenital and adult cardiovascular diseases represent an enormous social and economic burden that invariably demands continuous efforts to understand the causes of such cardiovascular defects and develop innovative strategies to correct and/or palliate them. In the next paragraphs, we aim to briefly account for our current understanding of the cellular bases of both congenital and adult cardiovascular diseases, providing a perspective of the plausible lines of action that might eventually result in increasing our understanding of cardiovascular diseases. This analysis will come out with the building blocks for designing novel and innovative therapeutic approaches to healing the broken hearts. Full article

Aims: The aim of this study was to evaluate the impact of sacubitril/valsartan on left ventricular (LV) reverse remodeling, potentially modifying the timing for cardiac device implantation in heart failure with reduced ejection fraction (HFrEF), which has not been specifically addressed. Methods and results: A secondary data analysis of a prospective cohort of HFrEF patients was conducted. Inclusion criteria: patients who started sacubitril/valsartan between November 2017 and August 2019 after previous optimal medical therapy. Primary endpoint: time to achieve LV Ejection Fraction (EF) > 35%. Kaplan–Meier was used to estimate median time and Cox regression model to investigate the patients’ characteristics associated with event incidence rate. In total, 48 patients were included, with a mean age of 72.5 years, predominantly male (70.8%). From the initial 48 patients with LVEF ≤ 35%, 27 (56%) reached LVEF > 35%, in a median time of 11.3 months (95% confidence interval [95%CI]: 9.4–19.6). In multivariate analysis, baseline LVEF between 30 and 35% was associated with increased cumulative incidence of attaining LVEF > 35% (Incidence rate ratio = 3.9; 95%CI: 1.6–9.9; p-value = 0.004). Conclusion: We observed an improvement in LVEF to >35% in the majority of patients who switched to sacubitril/valsartan, illustrating its role in cardiac remodeling. We speculate that this improvement may allow delaying implantation of Cardioverter-Defibrillator/Cardiac Resynchronization Therapy. Full article

Aims: Sacubitril/valsartan has shifted the landscape of heart failure (HF) treatment. As renal function (RF) is often compromised in HF patients, this study aimed to assess the evolution of RF in patients with HF with a reduced ejection fraction (HFrEF) and initiating treatment with sacubitril/valsartan. Methods and results: We present a secondary data analysis of a prospective cohort of HFrEF patients. Inclusion criteria: patients who started sacubitril/valsartan between November 2017 and August 2019, after previous optimal medical therapy, had a New York Heart Association classification of II or III, at least 6 months of follow-up, and an estimated glomerular filtration rate (eGFR) below 90 mL/min/1.73 m². Main endpoint: annualized change in eGFR. A total of 52 patients met the inclusion criteria. The average eGFR reduced from 54.2 to 52.5 mL/min/1.73 m², at baseline and last follow-up, respectively. The average eGFR annualized change from baseline decreased 3.1 mL/min/1.73 m²/year without statistical significance (95% confidence interval: −8.7 to 2.5). No subgroup analysis presented a statistically significant annualized change in eGFR. Mean left ventricular ejection fraction increased from 30.4% to 37.9% at last follow-up. Conclusion: This real-world study demonstrated sacubitril/valsartan promoted no major harm in renal function, while maintaining effectiveness in a population of HFrEF patients with mild to severe renal disease. Full article

An unroofed coronary sinus is a malformation that leads to a shunt between the coronary sinus and the left atrium. In our case, the shunt led to the formation of a gigantic left atrial aneurysm compressing the left atrium on transesophageal echocardiography. During surgery, a myxoma was incidentally discovered. Full article

COVID-19 mainly causes pulmonary manifestation; nonetheless, its systemic inflammatory response involves multiple organs, including the heart. We aimed to evaluate the prevalence, predictors, and outcomes of myocardial injury in hospitalized patients with SARS-CoV-2 infection. Methods and Results: We performed an observational retrospective analysis on patients hospitalized with COVID-19 in a moderate-sized community hospital system. Myocardial injury was defined as highly sensitive troponin T levels in the 99th percentile above the normal upper limit for the respective biological sex. Multivariable logistic regression models were fitted to assess the association between the myocardial-injury and the no-myocardial-injury groups for primary and secondary outcomes. A total of 1632 (49.3% male, 41.7% aged 60–79 years) patients with COVID-19 were included, out of which 312 (19.1%) had a myocardial injury. Patients with myocardial injury were older (36.9% > 80 years) and had higher cardiovascular-related comorbidities than those without. The prevalence of cardiovascular risk factors (78.5% vs. 52.0%) and cardiovascular diseases (78.2% vs. 56.1%) was much higher in the myocardial-injury group. Older age (50–64 years vs. <49 years; OR, 3.67 [1.99–6.74]), Angiotensin Receptor Blockers (ARBs) (OR, 1.44 [1.01–2.05]), Beta-blockers (OR, 2.37 [1.80–3.13]), and cardiovascular comorbidities (OR, 1.49 [1.09–2.05]) were strong predictors of cardiac injury after multivariable adjustment. Myocardial injury was strongly associated with ICU admission (adjusted OR, 1.68 [1.29–2.19]) and longer length of hospital stay (median days, 5 (3, 9) vs. 4 (2, 7)). The results do not show a significant difference in the use of mechanical ventilation (OR, 1.29 [0.87–1.89]) or in-hospital mortality (OR, 1.37 [0.98–1.91]) with respect to myocardial injury. Conclusion: This multicenter retrospective study of nearly 1600 patients revealed the following findings: Myocardial injury was observed in 1 out of 5 patients hospitalized with COVID-19 but was more often clinically insignificant. Patients of age > 65 had very high odds of having elevated troponin levels after adjusting for sex and other illnesses. Pre-existing cardiac diseases and risk factors were robust predictors of cardiac injury after adjusting for age and sex. In the adjusted model, myocardial injury was not associated with the requirement of mechanical ventilation or change in in-hospital mortality. Full article

Cardiovascular events are the primary cause of mortality in patients with obstructive sleep apnea and obesity. The rising prevalence of obstructive sleep apnea in recent decades has been linked to increasing rates of obesity. Obstructive sleep apnea has also been linked with many different cardiovascular diseases including coronary artery disease, stroke, heart failure, hypertension, and atrial fibrillation. Obesity is an increasing health concern globally, in part because obesity complications such as hypertension, diabetes, and obstructive sleep apnea increase the risk of cardiovascular diseases. More than 10% weight loss may be required to prevent or reverse obesity complications. Treatment approaches to obesity include nutritional therapy, exercise therapy, pharmacotherapy, and surgical therapies. This review intends to identify the effects of weight loss on cardiovascular outcomes in patients with obesity and obstructive sleep apnea. Despite the strong association between cardiovascular diseases and obstructive sleep apnea, randomized trials have failed to demonstrate that treatment of obstructive sleep apnea reduces cardiovascular events, even in patients with established cardiovascular diseases. Weight loss in patients with obstructive sleep apnea improves HbA_1c, systolic blood pressure, HDL cholesterol, and triglycerides, but thus far no changes in cardiovascular events have been shown. The combination of weight loss with continuous positive airway pressure (CPAP) appears more beneficial than either treatment in isolation. Large well-controlled trials in patients with obstructive sleep apnea to assess the effects of different weight reduction programs on cardiovascular disease are still needed. Full article

Implantable loop recorders (ILR) are devices that are implanted subcutaneously on the chest, which enables the continuous monitoring of arrhythmias for up to three years. These devices have an important role in helping to make a diagnosis and supporting decisions about the best patient management. There are currently three companies that produce ILRs. The Reveal DX and XT device is produced by Medtronic. The Confirm device is produced by Abbott. The Biomonitor III device is produced by Biotronik. The established indications for ILR include the management of transient loss of consciousness and the diagnosis of undocumented palpitations; however, they are also used for less established applications, including atrial fibrillation (AF) monitoring and risk stratification in patients with previous myocardial infarction or inherited cardiomyopathies. There is also diverse literature exploring the use of these devices in other populations, including patients with conditions such as congenital heart disease, amyloidosis, stroke, obstructive sleep apnea, renal transplant and patients who undergo procedures such as AF ablation and coronary artery bypass graft. In this review, we describe how the use of ILR has been applied in different settings, including patients with cardiac and non-cardiac conditions as well as post-cardiac procedures. We then discuss the potential issues related to using ILR in these other indications. Full article

Background: Cardiovascular disease remains the leading cause of death in the United States. Coronary artery disease alone accounted for approximately 13% of deaths in the US in 2016. Some studies have suggested an increased prevalence of coronary artery disease (CAD) in chronic inflammatory conditions, such as celiac disease (CD). Chronic subclinical systemic inflammation, decreased absorption of cardio-protective nutrients and drugs have all been postulated as the driving mechanisms for this increased risk of CAD. Methods: We reviewed a Nationwide Inpatient Sample from 2007 to 2017, using Acute Coronary syndrome as a principal diagnosis with CD as the secondary diagnosis, utilizing validated ICD-9-CM and ICD-10 codes. We examined the annual trends in the number of cases and hospitalization charges yearly and used survey regression to calculate adjusted odds ratios (aOR) for hospital mortality and other outcomes. Results: We identified a total of 8,036,307 ACS hospitalizations from 2007 to 2017, of which 5917 (0.07%) had a diagnosis for CD. The proportion of patients with CD in ACS hospitalizations increased from 0.015% in 2007 to 0.076% in 2017. These patients were significantly older (70.3 vs. 67.4 years, p < 0.02), more likely female (51.9% vs. 39.5%, p < 0.01), and more likely to be white (93.8% vs. 76.6%; p < 0.01) than ACS patients without CD. After adjusting for age, gender, race, Charlson Comorbidity index and hospital level characteristics, ACS hospitalizations for CD patients had a lower odds ratio for hospital mortality (aOR = 0.39; 95% CI = 0.23–0.67; p < 0.01). Additionally, length of stay in this patient population was shorter (4.53 vs. 4.84 days, p < 0.01) but the mean hospitalization charges were higher (USD 64,058 vs. USD 60,223, p < 0.01). Conclusion: We found that the number of ACS-related admissions in CD patients has risen more than five-fold between 2007 and 2017. However, the odds of in-hospital mortality in these patients is not higher than patients without CD. The results of our study demonstrate that although the systemic inflammation related to CD is associated with an increasing prevalence of ACS hospitalizations, on the contrary, the mortality rate is significantly higher in patients without celiac disease. Full article

Atrial fibrillation (AF), a heart condition, has been a well-researched topic for the past few decades. This multidisciplinary field of study deals with signal processing, finite element analysis, mathematical modeling, optimization, and clinical procedure. This article is focused on a comprehensive review of journal articles published in the field of AF. Topics from the age-old fundamental concepts to specialized modern techniques involved in today’s AF research are discussed. It was found that a lot of research articles have already been published in modeling and simulation of AF. In comparison to that, the diagnosis and post-operative procedures for AF patients have not yet been totally understood or explored by the researchers. The simulation and modeling of AF have been investigated by many researchers in this field. Cellular model, tissue model, and geometric model among others have been used to simulate AF. Due to a very complex nature, the causes of AF have not been fully perceived to date, but the simulated results are validated with real-life patient data. Many algorithms have been proposed to detect the source of AF in human atria. There are many ablation strategies for AF patients, but the search for more efficient ablation strategies is still going on. AF management for patients with different stages of AF has been discussed in the literature as well but is somehow limited mostly to the patients with persistent AF. The authors hope that this study helps to find existing research gaps in the analysis and the diagnosis of AF. Full article