Gender effect on the preoperative cardiovascular responses in pediatric patients undergoing two-stage ear reconstruction surgery for microtia

Kim, Myung Hee; Lee, Sang Hyun; Joo, Hyo Sung; Park, Hui Gyeong

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Clinical Research

Pediatric Anesthesia

Anesthesia and Pain Medicine 2013;8(1):59-63.
Published online January 31, 2013.

Gender effect on the preoperative cardiovascular responses in pediatric patients undergoing two-stage ear reconstruction surgery for microtia

Myung Hee Kim, Sang Hyun Lee, Hyo Sung Joo, Hui Gyeong Park

Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. myungkimlee@naver.com

Abstract

BACKGROUND
The hemodynamic reactions to psychological stress were different between adult genders. Our aim was to investigate the hypothesis that preoperative cardiovascular responses in children undergoing ear reconstruction surgeries will be different according to gender.
METHODS
We obtained data from children, aged 7-16 years, undergoing reconstruction surgeries for microtia during 2005-2009. Number of boys receiving primarily rib cartilage graft (RCG) surgery and secondarily ear elevation procedure was 121 and 83, respectively, and girls 48 and 28, respectively. Preoperative systolic (S), diastolic blood pressure (DBP) and heart rate (HR) on each surgery were compared between genders, and within genders.
RESULTS
Boys were younger than girls by one year at first and second admission. Boys showed significantly lower preoperative DBP than girls (mean difference [MD]: -3.7 mmHg, 95%CI: -6.1 to -1.3, P = 0.032) before RCG, whereas significantly higher SBP (MD: 21.5 mmHg, 95%CI: 16.6 to 26.4, P < 0.001), and DBP (MD: 10.2 mmHg, 95%CI: 6.0 to 14.4, P < 0.001) before ear elevation. Comparison between the two surgeries within the same gender indicated that boys demonstrated significantly higher SBP (P < 0.001) and DBP (P < 0.001) before ear elevation than before RCG; however SBP was comparable and DBP was significantly lower (P = 0.035) before ear elevation than before RCG in girls.
CONCLUSIONS
Gender impact on the preoperative cardiovascular reactions was evident in children undergoing microtia surgery.

Key Words: Cardiovascular response, Ear elevation, Gender, Microtia, Rib cartilage graft

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