Prognostic Utility of Troponin I and N Terminal-ProBNP among Patients with Heart Failure due to Non-Ischemic Cardiomyopathy and Important Correlations.

BACKGROUND: Heart Failure (HF) is accompanied by a high cost of care and gloomy prognosis despite recent advances in its management. Therefore, efforts to minimize HF rehospitalizations is a major focus of several studies. METHODS: We conducted a retrospective cohort study of 140 patients 18 years and above who had baseline clinical parameters, echocardiography, NT-ProBNP, troponin I and other laboratory parameters following a 3-year electronic medical record review. Patients with coronary artery disease, preserved ejection fraction, pulmonary embolism, cancer, and end-stage renal disease were excluded. RESULTS: Of the 140 patients admitted with HF with reduced Ejection Fraction (HFrEF) secondary to non-ischemic cardiomyopathy, 15 were re-hospitalized within 30 days of discharge while 42 were rehospitalized within 6 months after discharge for decompensated HF. Receiver operating characteristic (ROC) cutoff points were obtained for NT-ProBNP at 5178 pg/ml and serum troponin I at 0.045 ng/ml. After Cox regression analysis, patients with HFrEF who had higher hemoglobin levels had reduced odds of re-hospitalization (p = 0.007) within 30 days after discharge. NT-ProBNP and troponin I were independent predictors of re-hospitalization at 6 months after discharge (p = 0.047 and p = 0.02), respectively, after Cox regression analysis. CONCLUSION: Troponin I and NT-ProBNP at admission are the best predictors of re-hospitalization 6 months after discharge among patients with HFrEF. Hemoglobin is the only predictor of 30 -day rehospitalization among HFrEF patients in this study. High-risk patients may require aggressive therapy to improve outcomes.

The relevance of serum albumin among elderly patients with acute decompensated heart failure.

OBJECTIVE: To assess the prognostic utility of serum albumin among elderly patients admitted for acute decompensated heart failure (ADHF) in terms of all-cause mortality and also to identify the predictors of hypoalbuminemia. METHODS: Retrospective cohort study of 119 elderly patients admitted for ADHF. Elderly patients were defined as patients over the age of 65 years. The patients were followed up for approximately 11 years. Patients with advanced renal failure, liver disease not due to HF, cancer and other causes of low life expectancy were excluded. Hypoalbuminemia was defined as serum albumin ≤ 2.9 g/dL. RESULTS: The study was made up of 65 females and 54 males with age ranging from 65 to 96 years. Of the 119 elderly patients with ADHF, there were 26 deaths. A significantly higher proportion of patients in the mortality group had an admission serum albumin level of ≤ 2.9 g/dL than those surviving (P = 0.011). After Cox's logistic regression, low albumin (P = 0.016), elevated direct bilirubin (P = 0.03), age greater than 85 (P = 0.008), lack of use of beta blockers (P = 0.0001) and left ventricular ejection fraction less than 35% (P = 0.005) increased the risk of death. Elevated serum creatinine (P = 0.0357) was the only predictor of hypoalbuminemia following multiple linear regression. CONCLUSIONS: Hypoalbuminemia may be an unrecognized marker of death in elderly patients with ADHF.

Relationship between pulmonary hypertension and outcomes among patients with heart failure with reduced ejection fraction.

Objectives: To identify predictors of pulmonary hypertension (PHT) and the predictive value of PHT for rehospitalization among patients with heart failure with reduced ejection fraction (HFrEF). Methods: A retrospective study of 351 hospitalized patients with heart failure (HF). Patients 18 years and above with HFrEF secondary to non-ischemic cardiomyopathy were reviewed. Patients with coronary artery disease, preserved ejection fraction and other secondary causes of PHT apart from HF were excluded. PHT as a predictor of 30-day and six-month re-admission was assessed as well as important possible predictors of PHT. Cox regression analysis, multiple linear regression as well as other statistical tools were employed as deemed appropriate. Results: Thirty-seven (37) and 99 patients were re-hospitalized within 30 days and 6 months after discharge for decompensated HF, respectively. After Cox regression analysis, higher hemoglobin reduced the odds of rehospitalization for decompensated HF (p = 0.015) within 30 days after discharge while higher pulmonary artery systolic pressure (PASP) (p = 0.002) and blood urea nitrogen (BUN) (p = 0.041) increased the odds of rehospitalization within 6 months of discharge. The predictors of the PHT among patients with HFrEF after multiple linear regression were low BMI (p = 0.027), increasing age (p = 0.006) and increased left atrial diameter (LAD) on echocardiography (p = 0.0001). Conclusion: Patients with HFrEF have a high predisposition to developing PHT if at admission, they have low BMI, dilated left atrium or are older. Patients with one or more of these attributes may need more intensive therapy to reduce the risk of developing PHT and in turn reduce readmission rates.