Highlights
- •In Japan, the median length of heart failure hospitalization was 16 days.
- •Of hospitalized patients, 85% were discharged with complete decongestion.
- •Admission and discharge Composite Congestion Score (CCS) correlated with outcomes.
- •Admission CCS correlated with postdischarge outcomes even when the CCS was 0 at discharge.
Abstract
Background
Congestion is a leading cause of hospitalization and a major therapeutic target in
patients with heart failure (HF). Clinical practice in Japan is characterized by a
long hospital stay, which facilitates more extensive decongestion during hospitalization.
We herein examined the time course and prognostic impact of clinical congestion in
a large contemporary Japanese cohort of HF.
Methods and Results
Peripheral edema, jugular venous pressure, and orthopnea were graded on a standardized
4-point scale (0–3) in 3787 hospitalized patients in a Japanese cohort of HF. Composite
Congestion Scores (CCS) on admission and at discharge were calculated by summing individual
scores. The primary outcome was a composite of all-cause death or HF hospitalization.
The median admission CCS was 4 (interquartile range, 3–6). Overall, 255 patients died
during the median hospitalization length of 16 days, and 1395 died or were hospitalized
for HF over a median postdischarge follow-up of 396 days. The cumulative 1-year incidence
of the primary outcome increased at higher tertiles of congestion on admission (32.5%,
39.3%, and 41.0% in the mild [CCS ≤3], moderate [CCS = 4 or 5], and severe [CCS ≥6]
congestion groups, respectively, log-rank P < .001). The adjusted hazard ratios of moderate and severe congestion relative to
mild congestion were 1.205 (95% confidence interval [CI], 1.065–1.365; P = .003) and 1.247 (95% CI, 1.103–1.410; P < .001), respectively. Among 3445 patients discharged alive, 85% had CCS of 0 (complete
decongestion) and 15% had a CCS of 1 or more (residual congestion) at discharge. Although
residual congestion predicted a risk of postdischarge death or HF hospitalization
(adjusted hazard ratio, 1.314 [1.145–1.509]; P < .001), the admission CCS correlated with the risk of postdischarge death or HF
hospitalization, even in the complete decongestion group. No correlation was observed
for postdischarge death or HF hospitalization between residual congestion at discharge
and admission CCS (P for the interaction = .316).
Conclusions
In total, 85% of patients were discharged with complete decongestion in Japanese clinical
practice. Clinical congestion, on admission and at discharge, was of prognostic value.
The severity of congestion on admission was predictive of adverse outcomes, even in
the absence of residual congestion.
Clinical Trial Registration
https://clinicaltrials.gov/ct2/show/NCT02334891 (NCT02334891) https://upload.umin.ac.jp/cgi–open–bin/ctr_e/ctr_view.cgi?recptno=R000017241 (UMIN000015238)
Graphical Abstract

Graphical Abstract
Key Words
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Article info
Publication history
Published online: January 20, 2023
Accepted:
January 2,
2023
Received in revised form:
December 23,
2022
Received:
August 8,
2022
Publication stage
In Press Journal Pre-ProofIdentification
Copyright
© 2023 Elsevier Inc. All rights reserved.