The effect of body surface area on the risk of early postoperative death in patients over 65 years who underwent surgical myocardial revascularization

Andrzej Walczak¹, Janusz Zaslonka¹, Alicja Iwaszkiewicz¹, Ryszard Jaszewski¹, Marzenna Zielinska², Radoslaw Zwolinski¹, Slawomir Jander¹, Leszek Markuszewski¹, Stanislaw Ostrowski¹

Summary
Background: The aim of the study was to analyze the effect of body surface area (BSA) on the incidence of death in the early postoperative period in a group of patients over 65 years of age who underwent coronary artery by-pass grafting (CABG).
Material and methods: The analysis concerned 276 patients over 65 years of age who underwent CABG between 1999 and 2000. The mean age of the patients was 69.14 ± 3.42 years. The analyzed group consisted of 193 men (69.93%) with a mean age of 68 ± 3.26 years and 83 women (30.07%) with a mean age of 69 ± 3.79. The patients were exposed to many risk factors – 97% of the patients were in the group of moderate or high risk group according to EuroSCORE.
Results: In the study group mean BSA was 1.869 ± 0.176. It was significantly lower in women than in men (1.751 ± 0.166 vs. 1.920 ± 0.154). No statistically significant difference in mean BSA between those who died and those who survived was observed (1.837 ± 0.195 vs. 1.874 ± 0.172, ns). The significant effect of BSA on mortality was found in either the women or men (1.746 ± 0.183 vs. 1.753 ± 0.164 in women and 1.891 ± 0.185 vs. 1.924 ± 0.150 in men).
Conclusions: In the group of elderly patients early postoperative mortality was higher and BSA was lower in women than in men. However, there was no difference in BSA between those who died and those who survived, either in men or in women.

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