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Cutoff Value of Phase Angle by Bioelectrical Impedance Analysis at Admission as a Prognostic Factor in Patients with Acute Heart Failure
Published on: June 10, 2025
Relation between Hemoconcentration Status and Readmission Plus Mortality Rate Among Iranian Individuals with
Ashkan Yadollahi Farsani1, Mehrbod Vakhshoori2, Asieh Mansouri3
1Heart Failure Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Insights
Hemoconcentration (HC) may be a biomarker for heart failure (HF) risk. While not significantly impacting rehospitalization, HC showed a trend towards lower mortality in acute HF patients.
Area of Science:
- Cardiology
- Internal Medicine
Background:
- Hemoconcentration (HC) is a potential biomarker for optimizing diuretic therapy in acute heart failure (HF).
- The association between HC and rehospitalization or mortality in HF patients remains debated.
- This study investigated the relationship between HC and readmission/mortality rates in Iranian acute HF patients.
Purpose of the Study:
- To determine the association between hemoconcentration (HC) and rehospitalization and mortality rates in acute heart failure (HF) patients.
- To evaluate HC as a potential biomarker for risk stratification in HF management.
Main Methods:
- Prospective cohort study (March 2017-March 2018) using data from the Persian Registry Of cardioVascular diseasE.
- Included 390 adult patients with acute HF; 69 exhibited hemoconcentration (increased hemoglobin levels during hospitalization).
- Analyzed the relationship between HC and readmission/mortality using logistic regression and Cox proportional hazard models.
Main Results:
- The study population (n=390) had a mean age of 70.5 years, with 66.9% males.
- Patients with HC did not show a significant difference in rehospitalization rates compared to those without HC.
- Patients with HC exhibited a borderline significant lower likelihood of mortality (HR 0.82, P=0.08).
Conclusions:
- Hemoconcentration (HC) is marginally associated with reduced 6-month mortality post-acute heart failure (HF).
- HC may serve as a useful biomarker for risk stratification in HF patients.
- Further prospective, population-based studies are needed to confirm these findings.
Background:
Hemoconcentration (HC) has been suggested to be a useful biomarker for determination of optimum diuretic therapy in acute heart failure (HF), but role of this factor in rehospitalization and death was still controversial. In this study, we aimed to define relation between HC and readmission and mortality rate among Iranian patients with acute HF.
Methods:
This was a prospective cohort study done from March 2017 to March 2018 using data of a HF section of Persian Registry Of cardioVascular diseasE. From a total number of 390 registered HF individuals aged 18 years or older, 69 ones showed alterations in hemoglobin (Hb) levels. Hb levels were measured at admission and discharge time. HC was defined as any increased level in Hb during hospitalization. The relation of HC with readmission and death rate was done using multiple logistic regression and Cox proportional hazard model, respectively.
Results:
The mean age of study population was 70.5 ± 11.9 years with the dominant percentage of male participants (66.9%). Patients showing HC during admission did not reveal any significant decreased likelihood of rehospitalization compared to negative ones. In comparison to HC negative patients, those showing increments in Hb levels had a borderline significant lower likelihood of mortality (hazard ratio: 0.82, 95% confidence interval, CI = 0.07-1.18, P = 0.08).
Conclusions:
Our data suggested that HC was associated marginally with reduced mortality rate 6 months post HF attack and could be utilized as a useful biomarker for risk stratification of HF patients. Several prospective longitudinal population-based studies are necessary proving these associations.
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