Sound waves for better sleep: new trial tests ultrasound on heart patients

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Diagnosed with cardiovascular disease (CVD) and scheduled to undergo cardiology-related surgical treatment 2. Able to receive and tolerate the aforementioned cardiology-related surgical treatment 3. Aged between 18 and 79 years (inclusive), with no restriction on gender 4. Agree to accept random allocation of the treatment strategies 5. With clear consciousness, no severe mental disorders or cognitive impairment; voluntarily sign the written informed consent form (ICF) and are willing to actively cooperate with the study treatment Exclusion Criteria: 1. Have used sedative-hypnotic drugs, antipsychotic drugs, opioid analgesics, antihistamines, non-steroidal anti-inflammatory drugs (NSAIDs), central nervous system (CNS) stimulant drugs, or any other medications that alter sleep architecture within the past 30 days 2. Have a history of cervical infection, trauma, severe cervical deformity, or prior cervical surgery 3. Unable to complete the daily study intervention as required by the trial protocol 4. Are participating in another clinical trial, or have participated in other clinical trials with interventions that may interfere with the results of this study 5. Have undergone major surgery or general anesthesia within the past 30 days 6. Have a history of alcohol abuse 7. Are female subjects who are pregnant or lactating, or plan to become pregnant during the study period 8. Have severe cognitive impairment, severe psychiatric disorders, epilepsy, or other related neurological disorders 9. Have concomitant malignant tumor or severe dysfunction of vital organs 10. Have active systemic infection 11. Have significant bleeding tendency, or renal failure undergoing regular hemodialysis 12. Are deemed unsuitable for the trial by the investigator for any other reason -