Abstract 338: Abdominal Fat Suspension Device for Maintaining Normal Cardiorespiratory Function in Obese Patients Undergoing Conscious Sedation During Surgery
Introduction: Obese patients undergoing surgical procedures that require conscious sedation have a heightened risk of perioperative morbidity because their excess abdominal tissue limits diaphragmatic excursion. We describe a simple, intuitive device that may help attenuate this increased risk.
Methods: Our abdominal suspension device consists of 4 suction cups that grip onto the abdomen. The cups are attached to a horizontal beam that is supported by a height-adjustable frame anchored to both sides of the operating table. To confirm the efficacy of abdominal suspension for relieving stress on the heart, we tested 30 healthy subjects of normal weight in the supine position. We measured their heart rates with and without a 40-lb tissue model that was placed on the abdomen to simulate the excess abdominal weight seen in obese patients.
Results: There was no significant difference in the average blood oxygen saturations before and after weight removal (97.7% vs. 97.5%, respectively; P=0.155). However, the decrease in heart rate was significant [76.2 vs. 68.9 beats/min, respectively, before and after weight removal; P<0.01 (P=4.36×10-6)], implying decreased respiratory effort as determined by a 1-tailed paired t test.
Conclusion: By helping to maintain normal cardiorespiratory function in obese patients during surgical procedures requiring conscious sedation, our abdominal suspension device shows great promise for reducing unnecessary cardiac stress and preventing perioperative respiratory complications.
- © 2012 by American Heart Association, Inc.