Key result
Older and middle-aged patients show similar gains in maximum phonation time after cardiac rehab.
Why the study?
Does older age affect the improvement in maximum phonation time in patients undergoing phase II cardiac rehabilitation after cardiac surgery?
Cohort (n=50)
Does older age affect the improvement in maximum phonation time in patients undergoing phase II cardiac rehabilitation after cardiac surgery?
Phase II cardiac rehabilitation effectively improves respiratory function and maximum vocal capabilities in post-cardiac surgery patients regardless of age.
Answers are grounded in this paper and cite their sources.
Supports similar relative maximum phonation time gains with phase II rehabilitation across ages; hypothesis-generating and should not yet change practice.
Background 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.
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Izawa et al. (2017) conducted a cohort in Cardiac surgery recovery (phase II cardiac rehabilitation) (n=50). Older age (≥65 years) vs. Middle age (<65 years) was evaluated on Percentage change in maximum phonation time (MPT) from 1 month to 3 months after cardiac surgery (p=0.20). Older and middle-aged patients demonstrated similar relative improvements in maximum phonation time following phase II cardiac rehabilitation (42.1% vs. 41.1% increase, p=0.20 for interaction), despite older patients having lower baseline values.
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