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Published on: December 11, 2016
The relationship between admission hemoglobin level and left ventricular systolic functions in patients with first
Nihat Sen1, Hüseyin Uğur Yazici, Yusuf Tavil
1Department of Cardiology, Medicine Faculty of Gazi University, Ankara, Turkey.
Insights
Mild anemia does not impair systolic function in patients experiencing their first ST-segment elevated myocardial infarction (STEMI). This study found no significant negative impact of anemia on key cardiac measures in STEMI patients.
Area of Science:
- Cardiology
- Internal Medicine
- Hematology
Background:
- ST-segment elevated myocardial infarction (STEMI) is a critical cardiovascular event.
- Hemoglobin levels and anemia are common in acute illness, potentially affecting cardiac function.
- The impact of anemia on left ventricular systolic function post-STEMI requires clarification.
Purpose of the Study:
- To investigate the association between admission hemoglobin levels and left ventricular systolic function in patients with their first STEMI.
- To compare echocardiographic parameters in STEMI patients with and without anemia.
Main Methods:
- Prospective study of 483 patients with first STEMI across three centers.
- Echocardiography performed to assess ejection fraction (EF), wall motion score index (WMSI), and tissue Doppler S wave velocities.
- Hemoglobin levels measured on admission; anemia defined by WHO criteria.
Main Results:
- Anemia was present in 13.9% of STEMI patients.
- No significant differences in EF or WMSI between anemic and non-anemic groups.
- Septal mitral annular S wave velocity was significantly lower in anemic patients, but overall correlation between hemoglobin and EF was not significant.
Conclusions:
- Mild to moderate anemia does not appear to have a deleterious effect on overall left ventricular systolic function in patients with first STEMI.
- Further research may explore specific regional myocardial function impacts.
Objectives:
The goal of this study was to evaluate the relationship between admission hemoglobin levels and left ventricular systolic functions in patients admitted with first ST-segment elevated myocardial infarction (STEMI).
Study Design:
The study was conducted prospectively in three centers in 483 consecutive patients (402 men, 81 women; mean age 56.5 ± 11.2 years; range 24 to 74 years) with first STEMI. All patients were evaluated by echocardiography after a mean of 2.4 days of admission. Evaluation of left ventricular systolic functions included measurements of ejection fraction (EF), wall motion score index (WMSI), and tissue Doppler S wave velocities at four different localizations (anterior, inferior, lateral, posterior septum). Hemoglobin levels were measured within one hour of admission. Anemia was defined according to the World Health Organization criteria (hemoglobin < 13.0 g/dl in men and < 12.0 g/dl in women). Echocardiographic characteristics of the patients with and without anemia were compared.
Results:
Anemia was detected in 67 patients (13.9%). There were no significant differences between patients with and without anemia with respect to left ventricular end-systolic and end-diastolic diameters, wall thickness, WMSI, and EF. The mean EF in the anemic group (47.5%) was lower than that of the patients without anemia (48.5%), but this difference was not significant. All Sm velocities were lower in the anemic group, but only septal mitral annular Sm velocity reached statistical significance (p = 0.048). There was no correlation between hemoglobin levels and EF (r = 0.027, p = 0.55).
Conclusion:
Our findings suggest that mild to moderate anemia has no deleterious effect on systolic function in patients with first STEMI.
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