Mendoza-Popoca CU, Suárez-Morales M

Language: Spanish
References: 11
Page: 88-92
PDF size: 150.09 Kb.

ABSTRACT

Background: For posterior spine surgery prone position is required. The prone position compresses the abdomen and restricts the chest wall movement leading to alterations of the pulmonar mechanics. To solve this problem the use of a free hanging abdomen and kneeling position is proposed, features that are provided by the Andrews surgical chest-knee supportable. We studied the changes found on ventilatory variables in patients in three positions: supine (basal), flat prone and chest – knee supported position to prove the efficacy of kneeling position in maintaining proper pulmonar mechanics. Methods: We recorded pulmonar compliance, peak airway pressure and airway resistance as ventilatory variables in seventy-six non obese and pulmonar condition free patients during the three positions comparing them using the t Student´s test for statistical analysis. Results: With the change from supine to prone position an important increase of peak airway pressure and airway resistance as well as a decrease of pulmonar compliance was noted, situation that was importantly reverted to near basal values with the kneeling position. Conclusions: The kneeling position with free hanging abdomen offers better ventilatory environment than the prone position in non-obese and pulmonary disease free patients.

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