Age-Related Differences of Maximum Phonation Time in Patients after Cardiac Surgery
AbstractBackground and aims: Maximum phonation time (MPT), which is related to respiratory function, is widely used to evaluate maximum vocal capabilities, because its use is non-invasive, quick, and inexpensive. We aimed to examine differences in MPT by age, following recovery phase II cardiac rehabilitation (CR). Methods: This longitudinal observational study assessed 50 consecutive cardiac patients who were divided into the middle-aged group (<65 years, n = 29) and older-aged group (≥65 years, n = 21). MPTs were measured at 1 and 3 months after cardiac surgery, and were compared. Results: The duration of MPT increased more significantly from month 1 to month 3 in the middle-aged group (19.2 ± 7.8 to 27.1 ± 11.6 s, p < 0.001) than in the older-aged group (12.6 ± 3.5 to 17.9 ± 6.0 s, p < 0.001). However, no statistically significant difference occurred in the % change of MPT from 1 month to 3 months after cardiac surgery between the middle-aged group and older-aged group, respectively (41.1% vs. 42.1%). In addition, there were no significant interactions of MPT in the two groups for 1 versus 3 months (F = 1.65, p = 0.20). Conclusion: Following phase II, CR improved MPT for all cardiac surgery patients. View Full-Text
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Izawa, K.P.; Kasahara, Y.; Hiraki, K.; Hirano, Y.; Watanabe, S. Age-Related Differences of Maximum Phonation Time in Patients after Cardiac Surgery. Diseases 2018, 6, 1.
Izawa KP, Kasahara Y, Hiraki K, Hirano Y, Watanabe S. Age-Related Differences of Maximum Phonation Time in Patients after Cardiac Surgery. Diseases. 2018; 6(1):1.Chicago/Turabian Style
Izawa, Kazuhiro P.; Kasahara, Yusuke; Hiraki, Koji; Hirano, Yasuyuki; Watanabe, Satoshi. 2018. "Age-Related Differences of Maximum Phonation Time in Patients after Cardiac Surgery." Diseases 6, no. 1: 1.
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