Effects of Abdominoplasty on Intra-Abdominal Pressure and Pulmonary Function

Abstract

BACKGROUND: Abdominal wall weakness is a consequence of rectus abdominis diastasis and flaccidity of the myofascial component. A degree of plicature of the rectus abdominis generates an increase of intra-abdominal pressure (IAP), which may result in an increase of intrathoracic pressure, thus affecting thoracic hemodynamics and leading to inadequate ventilation. OBJECTIVES: To assess changes generated by plicature of the rectus abdominis on IAP and pulmonary function in patients undergoing abdominoplasty. METHODS: A total of 10 female patients with abdominal ptosis were included. Chronic smokers and patients with respiratory co-morbidities were excluded. The IAP was measured using a modified Kron's trans-bladder technique. Pulmonary function was assessed by pulmonary compliance (P-Comp) and was calculated with parameters provided by the mechanical ventilator. Both were calculated before and after plicature. RESULTS: The mean values for IAP before and after plicature were 6.6 and 9.3 mmHg respectively. Before plicature, the mean P-Comp value was 38.97 mL/cm of water, and after it was 36.54 mL/cm. Both differences were statistically significant. CONCLUSIONS: Based on the results obtained, it is possible to conclude that plicature of the rectus abdominis generates significant physiological changes, such as an increase in IAP and a decrease of P-Comp, which do not have a clinically relevant impact on healthy individuals. Measuring IAP with the modified technique and the assessment of pulmonary function using P-Comp are both reliable and provide a more accurate correlation with such physiologic changes. LEVEL OF EVIDENCE 3: Therapeutic.