Risk factors and clinical prediction models for prolonged mechanical ventilation after heart valve surgery.

Objectives: Prolonged mechanical ventilation (PMV) is a common complication following cardiac surgery linked to unfavorable patient prognosis and increased mortality. This study aimed to search for the factors associated with the occurrence of PMV after valve surgery and to develop a risk prediction model.

Methods: The patient cohort was divided into two groups based on the presence or absence of PMV post-surgery.