Effects of Music Therapy on Anxiety Symptoms in Patients With Prolonged Mechanical Ventilation: A Randomized Controlled Trial

Inclusion Criteria: \- 1、Age \> 50 years 2、Diagnosed with Prolonged Mechanical Ventilation (PMV), meeting the following criteria: Continuous mechanical ventilation for ≥ 21 days Daily mechanical ventilation duration ≥ 6 hours Ventilation via endotracheal tube, tracheostomy, or non-invasive interface (face/nasal mask). 3、Voluntarily signed the informed consent form (either by the patient or their legal representative). Exclusion Criteria: * 1、Cognitive or psychiatric disorders: history of severe mental illness (e.g., schizophrenia, severe depression, bipolar disorder) or diagnosed moderate-to-severe dementia/cognitive impairment. 2、Presence of delirium: assessed as positive by the Confusion Assessment Method for the ICU (CAM-ICU) prior to enrollment. 3、Extreme hemodynamic instability: unstable vital signs requiring frequent resuscitation, or in the acute phase of a severe cardio-cerebrovascular accident. 4、Untreated hearing impairment. 5、Physical conditions preventing safe earphone use (e.g., skin damage, burns, facial or cranial fractures). 6、Poor prognosis: end-stage disease or assessed by the investigator as having a life expectancy insufficient to complete the intervention and follow-up period.