Effects of laparoscopic cholecystectomy on lung function: A systematic review

Table 3 Description of the baseline characteristics for the six additional articles used in the writing of this review

Ref.	Baseline characteristics
Chuter et al[50]	Parameters of respiratory pattern such as minute ventilation, tidal volume, the contribution of chest wall (VC/VT) to tidal volume and the contribution of the abdominal wall (Vab/VT) to tidal volume were studied preoperatively, on the first and on the third day after OC
Rademaker et al[47]	FVC, FEV1 and PEF were examined in a half sitting position preoperatively, and 24 h postoperatively in patients having undergone elective LC and OC while the effects of thoracic epidural analgesia after LC were also studied
McMahon et al[51]	FVC, FEV1, PEF, postoperative pain scores, analgesic consumption and oxygen saturation were examined preoperatively, on the first postoperative day and on the second postoperative day between patients who underwent LC and OC. The OC was performed with minilaparotomy surgical approach
Freeman and Armstrong[48]	Measurements of FVC, FEV1, Tiffenneau index, FRC, TLC, inspiratory and expiratory mouth pressures were examined preoperatively, and 24 h postoperatively between LC and OC
Rovina et al[49]	Measurements of FVC, FEV1, Tiffenneau index, blood gases indices, maximum static inspiratory (PImax) and maximum expiratory (PEmax) muscle pressures were studied preoperatively, on the first postoperative day and on the second postoperative day between LC and OC
Mimica et al[33]	Spirometric parameters (FVC, FVE1, Tiffenneau index), arterial blood gases, abdominal circumference, intestinal peristalsis and defecation were studied preoperatively, to the sixth postoperative day between LC and OC

FVC: Forced vital capacity (L); FEV₁: Forced expiratory volume in one second (L); FRC: Functional residual capacity (L); TLC: Total lung capacity (L); Tiffenneau index: FEV₁/FVC_(%) ratio; PImax: Maximum static inspiratory muscle pressure (cmH₂O); PEmax: Maximum static expiratory muscle pressure (cmH₂O); PEF: Peak expiratory flow.