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CA125-Guided Diuretic Treatment Versus Usual Care in Patients With Acute Heart Failure and Renal Dysfunction.
Núñez, J, Llàcer, P, García-Blas, S, Bonanad, C, Ventura, S, Núñez, JM, Sánchez, R, Fácila, L, de la Espriella, R, Vaquer, JM, et al
The American journal of medicine. 2020;(3):370-380.e4
Abstract
BACKGROUND The optimal diuretic treatment strategy for patients with acute heart failure and renal dysfunction remains unclear. Plasma carbohydrate antigen 125 (CA125) is a surrogate of fluid overload and a potentially valuable tool for guiding decongestion therapy. The aim of this study was to determine if a CA125-guided diuretic strategy is superior to usual care in terms of short-term renal function in patients with acute heart failure and renal dysfunction at presentation. METHODS This multicenter, open-label study randomized 160 patients with acute heart failure and renal dysfunction into 2 groups (1:1). Loop diuretics doses were established according to CA125 levels in the CA125-guided group (n = 79) and in clinical evaluation in the usual-care group (n = 81). Changes in estimated glomerular filtration rate (eGFR) at 72 and 24 hours were the co-primary endpoints, respectively. RESULTS The mean age was 78 ± 8 years, the median amino-terminal pro-brain natriuretic peptide was 7765 pg/mL, and the mean eGFR was 33.7 ± 11.3 mL/min/1.73m2. Over 72 hours, the CA125-guided group received higher furosemide equivalent dose compared to usual care (P = 0.011), which translated into higher urine volume (P = 0.042). Moreover, patients in the active arm with CA125 >35 U/mL received the highest furosemide equivalent dose (P <0.001) and had higher diuresis (P = 0.013). At 72 hours, eGFR (mL/min/1.73m2) significantly improved in the CA125-guided group (37.5 vs 34.8, P = 0.036), with no significant changes at 24 hours (35.8 vs 39.5, P = 0.391). CONCLUSION A CA125-guided diuretic strategy significantly improved eGFR and other renal function parameters at 72 hours in patients with acute heart failure and renal dysfunction.
2.
Heart failure in the outpatient versus inpatient setting: findings from the BIOSTAT-CHF study.
Ferreira, JP, Metra, M, Mordi, I, Gregson, J, Ter Maaten, JM, Tromp, J, Anker, SD, Dickstein, K, Hillege, HL, Ng, LL, et al
European journal of heart failure. 2019;(1):112-120
Abstract
INTRODUCTION Patients with symptomatic heart failure (HF) require additive therapies and have a poor prognosis. However, patient characteristics and clinical outcome between HF patients treated in the outpatient setting vs. those who are hospitalized remain scarce. METHODS AND RESULTS The BIOlogy Study to TAilored Treatment in Chronic Heart Failure (BIOSTAT-CHF) included 2516 patients with symptoms and/or signs of HF: 1694 as inpatients and 822 as outpatients. Compared to ambulatory HF patients, inpatients had higher heart rate, urea, N-terminal pro-brain natriuretic peptide, lower blood pressure, lower estimated glomerular filtration rate, sodium, potassium, high-density lipoprotein cholesterol, had more often peripheral oedema, diabetes, anaemia, and were less often treated with beta-blockers and angiotensin-converting enzyme inhibitors (ACEi). Outpatients had a more frequent history of HF hospitalization and received more frequently beta-blockers and/or ACEi/angiotensin receptor blockers up-titrated to target doses (P < 0.001). Inpatients had higher rates of the primary outcome of death or HF hospitalization: incidence rate per 100 person-years of 33.4 [95% confidence interval (CI) 31.1-35.9] for inpatients vs. 18.5 (95% CI 16.4-21.0) for outpatients; adjusted hazard ratio 1.24 (95% CI 1.07-1.43). Subdividing patients into low, intermediate and high-risk categories, the primary outcome event rates were 14.3 (95% CI 12.3-16.7), 36.6 (95% CI 32.2-41.5), and 71.3 (95% CI 64.4-79.0) for inpatients vs. 8.4 (95% CI 6.6-10.6), 29.8 (95% CI 24.5-36.2), and 43.3 (95% CI 34.7-54.0) for outpatients, respectively. These findings were externally replicated. CONCLUSIONS Marked differences were observed between inpatients and outpatients with HF. Overall, inpatients were sicker and had higher event rates. However, a substantial proportion of outpatients had similar or higher event rates compared to inpatients. These findings suggest that HF outpatients also have poor prognosis and may be the focus of future trials.
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The furosemide stress test for prediction of worsening acute kidney injury in critically ill patients: A multicenter, prospective, observational study.
Rewa, OG, Bagshaw, SM, Wang, X, Wald, R, Smith, O, Shapiro, J, McMahon, B, Liu, KD, Trevino, SA, Chawla, LS, et al
Journal of critical care. 2019;:109-114
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Abstract
PURPOSE To validate the furosemide stress test (FST) for predicting the progression of acute kidney injury (AKI). MATERIALS AND METHODS We performed a multicenter, prospective, observational study in patients with stage I or II AKI. The FST (1 mg/kg for loop diuretic naïve patients and 1.5 mg/kg in patients previously exposed to loop diuretics) was administered. Subsequent urinary flow rate (UFR) recorded and predictive ability of urinary output was measured by the area under the curve receiver operatic characteristics (AuROC). Primary outcome was progression to Stage III AKI. Secondary outcomes included in-hospital mortality and adverse events. RESULTS We studied 92 critically ill patients. 23 patients progressed to stage III AKI and had significantly lower UFR (p < 0.0001). The UFR during the first 2 h was most predictive of progression to stage III AKI (AuROC = 0.87), with an ideal cut-off of less than 200mls, with a sensitivity of 73.9% and specificity of 90.0%. CONCLUSION In ICU patients without severe CKD with mild AKI, a UFR of less than 200mls in the first 2 h after an FST is predictive of progression to stage III AKI. Future studies should focus on incorporating a FST as part of a clinical decision tool for further management of critically ill patients with AKI.
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Different diuretic properties between tolvaptan and furosemide in congestive heart failure patients with diuretic resistance and renal impairment: a subanalysis of the K-STAR.
Ikeda, Y, Inomata, T, Kida, K, Shibagaki, Y, Sato, N, Izumi, T, Ako, J, ,
Heart and vessels. 2019;(3):442-451
Abstract
We attempted to identify the difference in diuretic properties between tolvaptan (TLV) and furosemide (FUR) in congestive heart failure (CHF) patients with loop diuretic resistance and renal impairment. We investigated 81 CHF patients with loop diuretic treatment and renal impairment included in t he Kanagawa Aquaresis Investigators Trial of Tolvaptan on Heart Failure Patients with Renal Impairment (K-STAR). Predictive baseline factors and their changes during treatment periods were analyzed for correlation with percentage change in urine volume (%ΔUV) after additive introduction of TLV or increasing doses of FUR. Higher urine osmolality at baseline (β = 0.355; p = 0.033) in the TLV group and a lower ratio of blood urea nitrogen to serum creatinine (BUN/Cr, β = - 0.405; p = 0.020) in the FUR group were predictive of higher %ΔUV. Higher Δfree-water clearance (β = 0.667; p < 0.0001) in the TLV group, and higher %ΔBUN/Cr (β = 0.344; p = 0.030), higher %Δurine sodium concentration (β = 0.337; p = 0.037), and lower %Δstroke volume (β = - 0.390; p = 0.017) in the FUR group were correlated with %ΔUV. In conclusion, baseline urine osmolality and change in free-water clearance with additive introduction of TLV and a changing ratio of BUN/Cr with increasing doses of FUR were identified as key clinical parameters related to diuretic response.Trial registration UMIN000009201.