J Korean Assoc Oral Maxillofac Surg 2020; 46(1): 36~40
Pulmonary functions of patients with isolated mandibular fractures: a preliminary report
Bamidele Adetokunbo Famurewa1, Fadekemi Olufunmilayo Oginni1, Stephen Babatunde Aregbesola1, Gregory Efosa Erhabor2
1Department of Oral/Maxillofacial Surgery and Oral Pathology, 2Department of Medicine (Pulmonology Unit), Obafemi Awolowo University, Ile-Ife, Nigeria
Bamidele Adetokunbo Famurewa
Department of Oral/Maxillofacial Surgery and Oral Pathology, Obafemi Awolowo University, Ile-Ife 220282, Nigeria
TEL: +234-8061284397
E-mail: murewadele83@gmail.com
ORCID: https://orcid.org/0000-0001-5426-4130
Received August 10, 2019; Revised November 14, 2019; Accepted November 24, 2019.; Published online February 29, 2020.
© The Korean Association of Oral and Maxillofacial Surgeons.. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Objectives: The aim of this study was to evaluate pulmonary function in patients with mandibular fractures and to determine the pattern of pulmonary functions in these patients.
Materials and Methods: This was a cross-sectional study of pulmonary functions in Nigerian non-smoking patients with isolated mandibular fractures managed at our health institution from December 2015 to June 2017. Forced vital capacity (FVC), forced expiratory volume in one second (FEV1), peak expiratory flow rate (PEFR), and ratio of FEV1 to FVC (FEV1/FVC) were measured for all participants using a portable spirometer just before treatment. The pulmonary indices were compared with the predicted reference values for Nigerians to determine the respiratory pattern.
Results: Forty participants consisting of six females (15.0%) and thirty-four males (85.0%) with a female to male ratio of 1:5.7 were included in this study. The mean patient age was 34.5±13.1 years (range, 17-63 years). The mean FVC, FEV1, FEV1/FVC, and PEFR were 3.8±1.2 L, 3.0±1.0 L, 74.3%±13.8%, and 5.2±2.2 L/s, respectively. Comparison of data with predicted values revealed that 17 subjects (42.5%) had normal pulmonary function pattern while 23 subjects (57.5%) had features suggestive of obstructive and restrictive pulmonary function patterns.
Conclusion: Isolated mandibular fractures presented with abnormal pulmonary function pattern.
Keywords: Pulmonary function, Mandibular fractures, Spirometry, Airway obstruction

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30 April 2020
Vol. 46
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