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ABSTRACT: Background
Postoperative pulmonary complications (PPCs) after major upper abdominal surgery are an important cause of morbidity and mortality. However, existing preoperative risk models inadequately address perioperative factors. Although diaphragmatic ultrasonography offers real-time assessment of respiratory muscle function, its predictive utility for PPCs remains underexplored. This study aimed to evaluate the predictive value of diaphragmatic ultrasound parameters for PPCs and to identify the optimal index among them.Methods
This prospective observational cohort study included patients aged ≥ 50 years who underwent elective upper abdominal surgery under general anesthesia. Right-sided diaphragmatic ultrasound evaluations were performed on preoperative day 1 (PreD1) and
SUBMITTER: Yan T
PROVIDER: S-EPMC12361034 | biostudies-literature | 2025 Aug
REPOSITORIES: biostudies-literature