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Anemia in patients with abnormal heart rate linked to increased mortality: Study
Germany: The presence of anemia in patients with ventricular tachyarrhythmias is associated with increased mortality at 2.5 years, researchers report in The American Journal of Cardiology. However, at the same time duration, anemia presence was not associated with the composite arrhythmic endpoint.
LVEF <35%, CKD, cardiogenic shock, male gender, CPR, and age were revealed as predictors of adverse prognosis at 2.5 years.
Michael Behnes, University of Heidelberg, Germany, and colleagues aimed to evaluate the prognostic impact of anemia in patients presenting with ventricular tachyarrhythmias in a longitudinal, observational, registry-based, monocentric cohort study.
The researchers included retrospectively and consecutive patients presenting with ventricular tachyarrhythmias on admission from 2002 to 2016. They compared anemic patients (hemoglobin levels <12.0 g/dl) with non–anemic patients (hemoglobin levels ≥12.0 g/dl).
The primary endpoint was all-cause mortality at 2.5 years. Secondary endpoints were cardiac death at 24 hours, all-cause mortality at index hospitalization, and the composite endpoint of cardiac death at 24 hours, recurrent ventricular tachyarrhythmias, and appropriate ICD therapies at 2.5 years.
Of the total 2,184 consecutive patients, 30% were anemic and 70% non–anemic.
The study revealed the following main findings:
- Anemia was associated with the primary endpoint of all-cause mortality at 2.5 years (65% vs 29%; HR = 2.441), cardiac death at 24 hours (26% vs 11%), all-cause mortality at index hospitalization (45% vs 20%), and the composite endpoint (35% vs 27%; HR = 2.923).
- After multivariable adjustment, anemia was no longer associated with the composite endpoint.
- Predictors of adverse prognosis for anemics were CKD (HR = 2.191), LVEF <35% (HR = 1.651), cardiogenic shock (HR = 1.591), CPR (HR = 1.460), male gender (HR = 1.379), and age (HR = 1.017).
"Our findings revealed that anemic patients presenting with ventricular tachyarrhythmias were associated with increased long-term mortality at 2.5 years but not with the composite arrhythmic endpoint at 2.5 years," concluded the authors.
Reference:
"Effect of Anemia on the Prognosis of Patients with Ventricular Tachyarrhythmias," is published in the American Journal of Cardiology.
DOI: https://www.ajconline.org/article/S0002-9149(21)00524-5/fulltext
MSc. Biotechnology
Medha Baranwal joined Medical Dialogues as an Editor in 2018 for Speciality Medical Dialogues. She covers several medical specialties including Cardiac Sciences, Dentistry, Diabetes and Endo, Diagnostics, ENT, Gastroenterology, Neurosciences, and Radiology. She has completed her Bachelors in Biomedical Sciences from DU and then pursued Masters in Biotechnology from Amity University. She has a working experience of 5 years in the field of medical research writing, scientific writing, content writing, and content management. She can be contacted at  editorial@medicaldialogues.in. Contact no. 011-43720751
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751