Article

OBJECTIVE: To determine the effects of pre- and postoperative inspiratory muscle
training on length of postoperative hospital stay and pulmonary function in
patients undergoing cardiac surgery.
METHODS: We conducted a
systematic search using databases (MEDLINE, CINAHL, EMBASE, PEDro and the
Cochrane) to find controlled trials evaluating the effects of pre- and
postoperative inspiratory muscle training. RESULTS:
Eight studies fulfilled the
inclusion criteria. Four were about preoperative inspiratory muscle training (416
patients), three about postoperative inspiratory muscle training (115 patients)
and one study about pre- and postoperative inspiratory muscle training (43
patients). Preoperative inspiratory muscle training resulted in improvement in:
Reduction in length of postoperative hospital stay of -2 days (95% CI -3.4, -0.7,
N = 302), inspiratory pressure of 16.7 cm H2O (95% CI 13.8, 19.5, N = 386),
forced expiratory volume in one second of 3% predicted (95% CI 0.1, 6, N = 140),
forced vital capacity of 4.6% predicted (95% CI 1.9, 7.4, N = 140). Patients that
received preoperative training had an inspiratory muscle training reduced risk of
postoperative pulmonary complications, (RR = 0.6; 95% CI 0.5 to 0.8; P = 0.0004,
N = 386). Postoperative inspiratory muscle training resulted in improvement in
inspiratory pressure of 16.5 cm H2O (95% CI 4.9, 27.8, N = 115), and tidal volume
of 185 ml (95% CI 19.7, 349.8, N = 85). CONCLUSION:
Pre- and postoperative
inspiratory muscle training showed to be a beneficial intervention in the
treatment of patients undergoing cardiac surgery.

Langue : ANGLAIS