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Journal of the Korean Academy of Rehabilitation Medicine 1993;17(3):436-443.
Phonation time and pulmonary function in spinal cord injured patients.
Park, Jeong Mee , Rah, Ueon Woo , Lee, Joong Heon
Department of Rehabilitation Medicine, Wonju College of Medicine and College of Medicine*, Yonsei University
척수손상환자에서의 발성시간과 폐기능검사의 비교연구
박정미, 나은우*, 이중헌*
연세대학교 원주의과대학 및 연세대학교 의과대학* 재활의학교실

Patients that have spinal cord injuries at or above the twelfth thoracic level have paralysis in at least one respiratory muscle, due to some of them will eventually have respiratory failure of a restrictive pattern. Pulmonary function needs to be tested continually to evaluate respiratory function and measure the effectiveness of the respiratory rehabilitation program. However, pulmonary function tests that are currently available have some limitations, such as technical problems or problems in the patients position. As a result a more convenient method of measuring pulmonary function is necessary.

In this study we used fifteen subjects with spinal cord injuries at or above the twelfth thoracic level. We measured phonation time and pulmonary function, as well as examined if there are any correlations between the phonation time and the subscales of the pulmonary function test.

The results showed that phonation time has a high correlation with vital capacity (VC), inspiratory capacity (IC) and expiratory reserve volume (ERV) (p<0.01). Our findings also very highly correlate phonation time with forced expiratory volume over one second (FEV1), forced vital capacity (FVC), maximum voluntary ventilation (MVV) and peak expiratory flow (PEF) (p<0.005).

We have concluded from these results that phonation time is a useful method for the evaluation and following up to pulmonary function in the patients with spinal cord injuries.

Key Words: Phonation time, Pulmonary function test, Spinal cord injury


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