Assessment of readiness to wean an elderly patient from mechanical ventilation using clinical and diaphragmatic ultrasound predictors: a case report. Port Harcourt Medical Journal, [S. l.], v. 20, n. 1, p. 63–67, 2026. DOI: 10.60787/phmj.v20i1.253. Disponível em: https://www.phmj.org.ng/index.php/home/article/view/253. Acesso em: 10 apr. 2026.