Background: Preoperative inspiratory muscle training (IMT) is frequently used in patients waiting for major surgery to improve respiratory muscle function and to reduce the risk of postoperative pulmonary complications (PPCs). Currently, the mechanism of action of IMT in reducing PPCs is still unclear. Therefore, we investigated the associations between preoperative IMT variables and the occurrence of PPCs in patients with esophageal cancer. Methods: A multi-center cohort study was conducted in subjects scheduled for esophagectomy, who followed IMT as part of a prehabilitation program. IMT variables included maximum inspiratory pressure (PImax) before and after IMT and IMT intensity variables including training load, frequency, and duration. Associations between PImax and IMT intensity variables and PPCs were analyzed using independent samples t tests and logistic regression analyses, corrected for age and pulmonary comorbidities and stratified for the occurrence of anastomotic leakages. Results: Eighty-seven subjects were included (69 males; mean age 66.7 ± 7.3 y). A higher PImax (odds ratio 1.016, P = .07) or increase in PImax during IMT (odds ratio 1.020, P = .066) was not associated with a reduced risk of PPCs after esophagectomy. Intensity variables of IMT were also not associated (P ranging from .16 to .95) with PPCs after esophagectomy. Analyses stratified for the occurrence of anastomotic leakages showed no associations between IMT variables and PPCs. Conclusions: This study shows that an improvement in preoperative inspiratory muscle strength during IMT and training intensity of IMT were not associated with a reduced risk on PPCs after esophagectomy. Further research is needed to investigate other possible factors explaining the mechanism of action of preoperative IMT in patients undergoing major surgery, such as the awareness of patients related to respiratory muscle function and a diaphragmatic breathing pattern.
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Introduction: To optimally target physiotherapy treatment, knowledge of the pre- and postoperative course of functional status in patients undergoing esophagectomy is required. The aim of this prospective longitudinal study was to investigate the course of functional status in patients with esophageal cancer before and after esophagectomy. Materials and methods: Functional status outcome measures of patients with esophageal cancer who underwent surgery between March 2012 and June 2016 were prospectively measured at 3 months and at 1 day before surgery and at 1 week and at 3 months after surgery. Analysis of repeated measurements with the mixed model approach was used to study changes over time. Results: Hundred fifty-five patients were measured at 3 months and at 1 day before surgery, of which 109 (70.3%) at 1 week and 60 (38.7%) at 3 months after surgery. Mean (SD) age at surgery was 63.5 years (9.3), and 122 patients (78.7%) were male. The incidence of postoperative complications was 83 (53.5%). Three months postoperatively, functional status measures returned to baseline levels, except from handgrip strength (beta [95% CI] −6.2 [-11.3 to −1.1]; P = 0.02) and fatigue (4.7 [0.7to 8.7]; P = 0.02). No differences were observed in the course of functional status between patients with and without postoperative complications. Conclusion: Functional status of patients undergoing esophagectomy returned to baseline values three months after surgery, despite the high incidence of postoperative complications. This requires rethinking the concept of prehabilitation, where clearly not all patients benefit from high functional status to prevent postoperative complications.
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Background: Malnutrition is an important risk factor for adverse postoperative outcomes such as infection and delayed wound healing, often resulting in longer hospital stay and higher readmission and mortality rates. The aim of this study is to assess the relationship between the risk for malnutrition prior to elective vascular surgery and postoperative complications. Methods: In this observational cross-sectional study, elective vascular surgery patients were included from January 2015 until November 2018. Included were percutaneous, carotid, endovascular, peripheral bypass, abdominal, lower extremity amputation, and other interventions. The patients were assessed for risk for malnutrition using the Patient-Generated Subjective Global Assessment Short Form (PG-SGA SF), whereby
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