Impact of natriuresis on worsening renal function during episodes of acute heart failure.

INTRODUCTION AND OBJECTIVES: Worsening renal function (WRF) is a frequent complication in acute heart failure (AHF) with a controversial prognostic value. We aimed to study the usefulness of natriuresis to evaluate WRF. METHODS: We conducted an observational, prospective, multicenter study of patients with AHF who underwent a furosemide stress test. The patients were classified according to whether WRF was present or absent and according to the median natriuretic response. The main endpoint was the combination of mortality, rehospitalization due to HF, and heart transplant at 6 months of follow-up. RESULTS: One hundred and fifty-six patients were enrolled, and WRF occurred in 60 (38.5%). The patients were divided into 4 groups: a) 47 (30.1%) no WRF/low UNa (UNa ≤ 109 mEq/L); b) 49 (31.4%) no WRF/high UNa (UNa > 109 mEq/L); c) 31 (19.9%) WRF/low UNa and d) 29 (18.6%) WRF/high UNa. The parameters of the WRF/low UNa group showed higher clinical severity and worse diuretic and decongestive response. The development of WRF was associated with a higher risk of the combined event (HR, 1.88; 95%CI, 1.01-3.50; P = .046). When stratified by natriuretic response, WRF was associated with an increased risk of adverse events in patients with low natriuresis (HR, 2.28; 95%CI, 1.15-4.53; P = .019), but not in those with high natriuresis (HR, 1.18; 95%CI, 0.26-5.29; P = .826). CONCLUSIONS: Natriuresis could be a useful biomarker for interpreting and prognosticating WRF in AHF. WRF is associated with a higher risk of adverse events only in the context of low natriuresis.

Evolution of the impact of the COVID-19 pandemic on heart transplant recipients: Decreasing risk, improving perspective.

BACKGROUND AND METHODS: Heart transplant recipients (HTr) have a higher probability of suffer from severe coronavirus disease-2019 (COVID-19) in comparison to general population, but their risk has changed over the course of the pandemic in relation to various factors. We conducted a prospective study including all HTr at risk of COVID-19 in a tertiary center between February 2020 and October 2022. The aim was to analyze how the prognosis (incidence of pneumonia and mortality) of COVID-19 in HTr has evolved over time, contextualizing variants, vaccination, and other treatments. RESULTS: Of 308 HTr included, 124 got the infection (39.2%). COVID and non-COVID HTr had similar baseline characteristics. COVID-19 patients with pneumonia had a poorer prognosis than those with less severe presentations, with a higher rate of hospitalization (93.3 vs. 14.1%, p < .001) and death (41.0 vs. 1.2%, p < .001). Multivariate analysis identified age ≥60 years (odds ratio [OR] 3.65, 95% confidence interval [CI] 1.16-11.49, p = .027), and chronic kidney disease ≥3a (OR 4.95, 95% CI 1.39-17.54, p = .014) as predictors of pneumonia. Two-dose vaccination (OR 0.20, CI 95% 0.05-0.72, p = .02) and early remdesivir administration (OR 0.17, CI 0.03-0.90, p = .037) were protective factors. Over the course of the pandemic considering three periods in the follow-up (prevaccination February-December 2020, postvaccination January-December 2021, and post early remdesivir indication January-October 2022), we observed a reduction in pneumonia incidence from 62% to 19% (p < .001); and mortality (from 23% to 4%, p < .001). CONCLUSIONS: The prognosis of COVID-19 in HTr has improved over time, likely due to vaccination and early administration of remdesivir.

Organ Donation: With Great Power Comes Great Responsibility.

Spain is a world leader in donation and transplantation. This model has been exported to other countries with favorable results. The objective of this study was to compare the actual donation intention rate with the effective donation figures, and analyze the main reasons why families decline organ donation. To estimate the current donation intention, we conducted 1065 surveys in March 2019, and to calculate effective donation figures in our hospital, we analyzed 1158 interviews conducted with relatives of potential organ donors between 1996 and 2018. Regarding the surveys to estimate donation intention, the mean (standard deviation) age was 51.6 (17-91) years. A total of 58% were women, 26% were health care professionals, and 5.1% were transplant recipients; 89.4% would donate their organs. In the multivariate analysis, having expressed the desire to donate to their family was independently related to the intention to donate (odds ratio, 3.4; 95% confidence interval, 2.2-5.2; P < .001). Regarding the interviews with relatives of potential donors, 79.4% were finally effective donors. The belief that the possible donor would have rejected the organ donation stands out among the causes of decline. However, only one-half of those surveyed expressed the wish to be a donor to their relatives. In the temporal evolution, a greater acceptance of donation is observed in the first period with a reduction over the last years (P > .001). It is our responsibility to improve transplantation rates because our model has shown to save lives and it is a role model for other nations, promoting information activities that encourage greater discussion of organ donation within families.

Prevalence and characterization of frailty, depression, and cognitive impairment in patients listed for heart transplantation: Results of the FELICITAR prospective registry.

INTRODUCTION: It is recommended to assess frailty prior to heart transplantation (HT). Our objective was to assess the prevalence of frailty in patients listed for HT. METHODS: The FELICITAR registry (Frailty Evaluation after List Inclusion, Characteristics and Influence on TrAnsplantation And Results) is a prospective registry that includes patients listed for HT in three centers, from January 2017 to April 2019. We assessed the presence of frailty, depression, cognitive impairment, and quality of life when included. RESULTS: Ninety-nine patients were included. Of this group, 30.6% were frail, 55 (56.1%) had depression (treated only in nine patients), and 51 (54.8%) had cognitive impairment. Compared with non-frail patients, frail patients were more frequently hospitalized when included in HT waiting list (P = .048), had a lower upper-arm circumference (P = .026), had a lower Barthel index (P = .001), more anemia (P = .010), higher rates of depression (P = .001), poorer quality of life (P = .001), and lower hand-grip strength (P < .001). In multivariate analysis hand-grip strength (odds ratio .91; 95% confidence interval .87-.96, P < .001) and Barthel index (odds ratio .90; 95% confidence interval .82-.99, P = .024) were associated with frailty. CONCLUSIONS: Frailty, depression, and cognitive impairment are common in patients included in HT waiting list. Frailty is strongly associated with hand-grip strength.