Clinical & Experimental Cardiology
Open Access

The effect of bimaxillary orthognathic surgery on airway resistance and lung volumes by body plethysmography

8^th Cardiovascular Nursing & Nurse Practitioners Meeting

August 08-09, 2016 Las Vegas, USA

Mozhgan Kazemian

Mashhad University of Medical Science, Iran

Posters & Accepted Abstracts: J Clin Exp Cardiology

Abstract :

Skeletal class III malocclusion can result from mandibular prognathism or maxillary deficiency and bimaxillary surgery is now the treatment of choice. Bimaxillary orthognathic surgery can cause changes to respiration and the airways because of their proximity. We used body plethysmography to evaluate its effect on airway resistance and lung volumes in 20 patients with class III malocclusions (8 men and 12 women, aged 7 - 32 years). Lung volumes (forced vital capacity; forced inspiratory volume/one second; forced expiratory volume/one second: forced vital capacity; peak expiratory flow; maximum expiratory flow 25-75; maximum inspiratory flow; total lung capacity; residual volume; residual volume: total lung capacity), and airway resistance were evaluated one week before, and six months after operation. Bimaxillary operations to correct class III malocclusions significantly increased airway resistance, residual volume, total lung capacity, and residual volume: total lung capacity. Other variables also changed after operation but not significantly so. Orthognathic operations should be done with caution in patients who have pre-existing respiratory diseases.

Biography :

Email: KazemianMZ@mums.ac.ir