Clinical phenotypes according to diuretic combination in acute heart failure

BACKGROUND

The treatment of congestion in heart failure (HF) is a challenge despite the therapeutic arsenal available. The aim of this study was to analyze different combinations of diuretics used to resolve congestion in patients admitted for decompensated HF and to define clinical profiles according to these treatments.

METHODS

Single-center study of 1,559 patients admitted for decompensated HF was done between 2016 and 2020. Patients were grouped according to the diuretic combination that led to clinical stabilization and discharge from the hospital: (1) Loop diuretic. (2) Loop diuretic + distal tubule (antialdosterone ± thiazides). (3) Loop diuretic + distal + proximal tubule (acetazolamide ± SGLT2 inhibitor). (4) Loop diuretic + distal tubule + collecting duct (tolvaptan). (5) Loop diuretic + distal + proximal + collecting duct. Based on these diuretic combinations, profiles with clinical, analytical, and echocardiographic differences were established.

RESULTS

There were more previous hospitalizations in groups 4 and 5 (p = 0.001) with a predominance of pulmonary congestion in profiles 1 and 2 and systemic congestion in 3, 4, and 5. Creatinine and CA125 were higher in profiles 4 and 5 (p = 0.01 and p = 0.0001), with no differences in NT-proBNP. Profiles 4 and 5 had a higher proportion of dilatation and depression of right ventricular (p = 0.0001) and left ventricular (p = 0.003) function. Diuretic therapy-defined groups showed difference in clinical characteristics.

CONCLUSIONS

The diuretic treatment used identifies five clinical profiles according to the degree of congestion, renal function, CA125, and right ventricular functionality. These profiles would guide the best diuretic treatment on admission.

Mortality After the First Hospital Admission for Acute Heart Failure, De Novo Versus Acutely Decompensated Heart Failure With Reduced Ejection Fraction

It is not clear to date whether a first admission in heart failure (HF) marks a worse evolution in patients not previously diagnosed with HF ("de novo HF") than those already diagnosed as outpatients ("acutely decompensated HF"). The aim of the study was to analyze whether survival in patients admitted for de novo HF differs from the survival in those admitted for a first episode of decompensation but with a previous diagnosis of HF. This study includes an analysis of 1,728 patients admitted for decompensated HF during 9 years. Readmissions and patients with left ventricular ejection fraction ≥50% were excluded (finally, 524 patients analyzed). We compared de novo HF (n = 186) in patients not diagnosed with HF, although their structural heart disease was defined, versus acutely decompensated HF (n = 338). The clinical profiles in both groups were similar. The de novo HF group more frequently presented with normal right ventricular function, with less presence of severe tricuspid regurgitation. The probability of survival was low in both groups. Thus, the median life in the de novo HF group was 2.1 years and in the acutely decompensated HF group, 3.5 years. There was a lower probability of long-term survival in the de novo HF group (p = 0.035). The variables associated with mortality were age (p <0.0001), ischemic heart disease (p <0.0001), hypertension (p = 0.009), obesity (p = 0.025), diabetes (p = 0.001), and N-terminal pro-brain natriuretic peptide at admission (p <0.0001). A higher glomerular filtration rate was associated with better survival (p = 0.033). De novo HF was associated with a higher mortality than chronic HF with acute decompensation (hazard ratio 1.53, 95% confidence interval 1.03 to 2.27, p = 0.036). In conclusion, the first admission for HF decompensation in patients with no previous diagnosis of HF identifies a subgroup of patients with higher long-term mortality.

Why Iron Deficiency in Acute Heart Failure Should Be Treated: A Real-World Clinical Practice Study

Background. This study aims to determine whether the administration of ferric carboxymaltose (FCM) in patients with acute heart failure (AHF) and iron deficiency (ID) improves morbidity and mortality. Methods. We studied 890 consecutive patients admitted for AHF. Patients were divided into six groups according to reduced left ventricular ejection fraction (HFrEF) or preserved (HFpEF), presence of ID, and administration of FCM. Emergency visits, re-admissions, and all-cause mortality were assessed at 6 months. Results. The overall prevalence of ID was 91.2%. In the HFrEF group, no differences were found in isolated events when patients with untreated vs. treated ID were compared, while differences were found in the combined event rate (p = 0.049). The risk calculation showed an absolute risk reduction (ARR) of 10% and relative risk reduction (RRR) of 18%. In HFpEF there was a positive trend with regard to the combined event (p = 0.107), with an ARR of 9% and an RRR of 15%. The number of patients we needed to treat to prevent a combined event was 10.5 in HFrEF and 10.8 in HFpEF. Conclusions. FCM in AHF reduced the combined event rate of emergency visits, re-admission, and all-cause death at 6 months in HF with left ventricular ejection fraction <50%, and showed a positive trend in HFpEF.

Usefulness of Immunoglobulin A in Patients With Decompensated Heart Failure: Is It a Future Marker of Congestion? Preliminary Experience

BACKGROUND

The purpose of this study was to analyze whether the level of IgA is related to right ventricular function and systemic congestion in patients with decompensated heart failure (HF) and reduced ejection fraction (EF).

METHODS

This was a consecutive prospective and observational study of hospitalized patients diagnosed with decompensated HF with reduced EF. The recruitment period lasted 2 months. In the first 24 hours after admission, clinical assessment, general laboratory tests, determination of HF biomarkers, IgA and echocardiographic study were performed. Patients were classified into 2 groups according to whether the plasma IgA level was lower (n = 11) or higher than 300 mg/dL (n = 12).

RESULTS

Significant differences in IgA levels were found in the peripheral congestion variables (no congestion: 232, interquartile range [IQR], 125-310 mg/dL vs congestion: 429, IQR, 308-520 mg/dL; P = .03). There were also differences in echocardiographic parameters of right ventricular function, with a greater deterioration of right ventricular function in the group with higher IgA levels (P < .05). There was a highly significant correlation between tricuspid annulus systolic excursion values and IgA levels (P = .004).

CONCLUSIONS

In decompensated HF, patients with greater clinical congestion and echocardiographic parameters of right ventricular dysfunction have higher plasma IgA levels. This study is a preliminary experience that will help to establish the basis of the cardiointestinal syndrome as a clinical picture of systemic congestion in HF.