A best evidence topic in cardiothoracic surgery was written according to a structured protocol. The question addressed was: In patients with acute flail chest does surgical rib fixation improve outcomes in terms of morbidity and mortality? Using the reported search criteria, 137 papers were found. Of these, 11 papers (N = 1712) represent the best evidence to answer the clinical question, and include one meta-analysis, two randomized, controlled trials (RCTs), five retrospective cohort studies and two case-control series. In-hospital mortality was lower for the surgical group in the meta-analysis [n = 582, odds ratio (OR) 0.31 (0.20-0.48), risk difference (RD) 0.19 (0.13-0.26), number needed to treat (NNT) 5] as well as significant decreases in ventilator days [mean 8 days, 95% confidence interval (CI) 5-10 days] and intensive care unit stay (mean 5 days, 95% CI 2-8 days). A reduction was found for septicaemia [n = 345, OR 0.36 (0.19-0.71), RD 0.14 (0.56-0.23), NNT 7], pneumonia [n = 616, OR 0.18 (0.11-0.32), RD 0.31 (0.21-0.41), NNT 3, P = 0.001], tracheostomy (OR 0.06, 95% CI 0.02-0.20) and chest wall deformity [n = 228, OR 0.11 (0.02-0.60), RD 0.30 (0.00-0.60), NNT 3]. Eight studies (n = 1015) had a shorter duration of mechanical ventilation following surgery. A reduction in intensive care unit stay was demonstrated in four papers (n = 389, 3.1-9.0 days), whereas a further three papers described a reduction in the duration of hospitalization (n = 489, 4-10.6 days). Three studies (n = 166) showed a lower risk for tracheostomy. One retrospective cohort study estimated lower total treatment costs in surgically treated patients ($32 300 vs $37 100) although not statistically significant. One retrospective case-control study described a lower risk for reintubation (n = 50, P = 0.034) and home oxygen requirements (n = 50, P = 0.034). One cohort study showed a better APACHE II score 14 days after trauma in the surgical group (P = 0.02). Surgical stabilization of flail chest in thoracic trauma patients has beneficial effects with respect to reduced ventilatory support, shorter intensive care and hospital stay, reduced incidence of pneumonia and septicaemia, decreased risk of chest deformity and an overall reduced mortality when compared with patients who received non-operative management.
Objectives: We sought to assess the safety of training in cardiothoracic surgery comparing outcomes of cases performed by trainees versus fully trained surgeons. Methods: EmBase, Scopus, PubMed, and OVID MEDLINE were searched in August 2021 independently by two authors. A third author arbitrated decisions to resolve disagreements. Inclusion criteria were articles on cardiothoracic surgery reporting on outcomes for trainees. Studies were assessed for appropriateness as per CBEM criteria. 892 results were obtained, 27 represented best evidence (2-Meta-analyses, 1-RCT and 24 retrospective cohort studies). Results: 474,160 operative outcomes were assessed for 434,535 CABG (431,329 on-pump vs 3206 off-pump), 3090 AVR, 1740 MVR/repair, 26,433 mixed, 3565 congenital and 4797 thoracic procedures. 398,058 cases were performed by trainees and 75,943 by consultants. 159 cases were indeterminate. There were no statistically significant differences in the patients’ pre-operative risk scores. All studies excluded extreme high-risk patients in emergency setting, patients with poor left ventricular function and re-operation cases that were undertaken by consultants. There were no differences in CPB and clamp times for CABG. Times for valve replacement and repair cases were longer for trainees. There were no differences in the post-operative outcomes including peri-operative myocardial infarction, resternotomy for bleeding, stroke, renal failure, ITU length of stay and total length of stay. One study reported no differences on angiographic graft patency at 1 year. There were no differences in in-hospital or mid-term mortality out to five-years. Discussion: Trainees can perform cardiothoracic surgery in dedicated high-volume units with outcomes comparable to those of fully trained surgeons.
Objectives We sought to assess the safety of training in cardiothoracic surgery comparing outcomes of cases performed by trainees versus fully trained surgeons. Methods EmBase, Scopus, PubMed, and OVID MEDLINE were searched in August 2021 independently by two authors. A third author arbitrated decisions to resolve disagreements. Inclusion criteria were articles on cardiothoracic surgery reporting on outcomes for trainees. Studies were assessed for appropriateness as per CBEM criteria. Eight hundred and ninety‐two results were obtained, 27 represented best evidence (2‐meta‐analyses, 1‐RCT, and 24 retrospective cohort studies). Results In all 474,160 operative outcomes were assessed for 434,535 coronary artery bypass grafting (CABG) (431,329 on‐pump vs. 3206 off‐pump), 3090 AVR, 1740 MVR/repair, 26,433 mixed, 3565 congenital, and 4797 thoracic procedures. In all 398,058 cases were performed by trainees and 75,943 by consultants. One hundred fifty‐nine cases were indeterminate. There were no statistically significant differences in the patients' preoperative risk scores. All studies excluded extreme high‐risk patients in emergency setting, patients with poor left ventricular function, and reoperation cases that were undertaken by consultants. There were no differences in cardiopulmonary bypass and clamp times for CABG. Times for valve replacement and repair cases were longer for trainees. There were no differences in the postoperative outcomes including perioperative myocardial infarction, resternotomy for bleeding, stroke, renal failure, intensive therapy unit length of stay, and total length of stay. One study reported no differences on angiographic graft patency at 1 year. There were no differences in in‐hospital or midterm mortality out to 5‐years. Discussion Trainees can perform cardiothoracic surgery in dedicated high‐volume units with outcomes comparable to those of fully trained surgeons.
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