The Effect of Hemoglobin Level on the Clinical Outcome of Patients undergoing Coronary Artery Bypass Graft (CABG) Surgery - The 66th Annual Conference of the Israel Heart Society & The Israel Society of Cardiothoracic Surgery

Erez Kachel ^1,2 Alex Eisenstein ² Basem Hijazi ² Ehud Raanani ⁴ Ofer Amir ^1,2 Mirit Shoan-Dayan ¹ Arnon Blum ^2,3

¹The Cardiac Surgery Department, Cardiovascular Division, Baruch Padeh Medical Center
²Azrieli Faculty of Medicine, Bar Ilan University
³Department of Medicine, Baruch Padeh Medical Center
⁴Department of Cardiac Surgery, Sheba Medical Center

Background: Low hemoglobin level is known to affect the clinical outcome and prognosis of patients with coronary artery disease, especially those with heart failure. There is no enough data about the effect of the hemoglobin level on the clinical outcome following CABG surgery.

Methods: A retrospective study following 240 patients that underwent CABG surgery in the Baruch Padeh Medical Center in the last 4 years. There were 34 women and 205 men, aged 61.85±9.57 years. We used hemoglobin level as an independent variable to study its effects on the post-operative atrial fibrillation, mortality, re-admission rate, hospitalization time and the time that patients had to be connected to the cardio-pulmonary bypass machine (CPBM) – as the dependent variables. We used logistic regression analysis to study the effect of hemoglobin level on all the dependent variables.

Results: Hemoglobin level affected readmission rate (OR=0.800, p=0.024).

Discussion: Hemoglobin level affect the clinical outcome post CABG. Lower levels of hemoglobin could
predict a higher mortality rate and readmission rate. This data is practically very important since this
knowledge will enable to start the CABG surgery in a safe hemoglobin level and improve the patient’s
survival and outcome post operation.