Clinical trial NCT05173688: The Relationship Between Different Doses of Propofol and the Occurrence of Dreams in Short Surgery Under General Anesthesia
Official title: The Relationship Between Different Doses of Propofol and the Occurrence of Dreams in Short Surgery Under General Anesthesia
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Dreaming
General Anesthesia
Lead sponsor: Shengjing Hospital
Sponsor class: OTHER
First posted: 2021-12-30
Enrollment: 300
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: Dreams are a remarkable experiment in psychology and neuroscience, conducted every night in every sleeping person. 74% of awakenings from REM sleep resulted in recall of a dream, as compared with only 9% of awakenings from NREM sleep. The association between dreaming and REM sleep was subsequently replicated by many other investigators; typically, around 80% of REM awakenings yield dreams. It became clear over time that there is a good deal of mental activity that occurs during NREM sleep. Typically, it is more thought like, fragmentary, and related to daily concerns than the vivid, hallucinatory, predominantly visual narratives that are most commonly reported from REM sleep. But even this distinction appears not to be absolute. There is now wide acceptance of the view that some dreaming that is indistinguishable from REM sleep dreaming occurs in NREM sleep, most frequently in the sleep-onset period. General anesthesia causes a drug-induced state of unconsciousness and is a non-physiological process that is similar to natural sleep. Patients receiving propofol for maintenance of general anesthesia often report higher incidences of dreaming than patients maintained with volatile anesthetics. One explanation is that propofol and volatile anesthetic have different pharmacological effects in the central nervous system. An alternative explanation is that propofol is associated with more rapid emergence from anesthesia than the older volatile anesthetics, allowing patients to report their dreams before they are forgotten. In order to further verify the hypothesis, the investigators choose gynecological general anesthesia to observe whether the generation of dreams is related to the dose of general anesthesia maintenance .


Eligibility criteria: Inclusion Criteria:

* between 18 and 70 years
* with an ASA physical status of I or II

Exclusion Criteria:

* presence of sleep disorders
* pain syndrome
* cardiovascular disease
* sleep apnea syndrome
* psychosis
* history of opioid usage
* history of abnormal operation or anesthesia recovery
* unwillingness to provide informed consent
* a patient with a language communication disorder

Primary outcomes:
measure: Mean blood pressure (systolic and diastolic)
timeFrame: 5 minutes after entering the operation room
measure: Mean blood pressure (systolic and diastolic)
timeFrame: Anesthesia induction to fall asleep
measure: Mean blood pressure (systolic and diastolic)
timeFrame: at the end of surgery
measure: Mean blood pressure (systolic and diastolic)
timeFrame: Upon awakening from anesthesia
measure: Mean blood pressure (systolic and diastolic)
timeFrame: leaving the operation room
measure: heart rate
timeFrame: entering the operation room
measure: heart rate
timeFrame: Anesthesia induction to fall asleep
measure: heart rate
timeFrame: at the end of surgery
measure: heart rate
timeFrame: Upon awakening from anesthesia
measure: heart rate
timeFrame: leaving the operation room
measure: BIS
timeFrame: entering the operation room
measure: BIS
timeFrame: Anesthesia induction to fall asleep
measure: BIS
timeFrame: at the end of surgery
measure: BIS
timeFrame: Upon awakening from anesthesia
measure: BIS
timeFrame: leaving the operation room
measure: Total dose of propofol
timeFrame: at the end of surgery
measure: Dream
timeFrame: at the end of surgery
Secondary outcomes:
measure: Postoperative adverse effects
timeFrame: 24 hours after surgery
Other outcomes:
Locations:
city: Shenyang
country: China
facility: Shengjing Hospital
state: Liaoning
Study officials:
affiliation: Shengjing Hospital
name: junchao zhu
role: PRINCIPAL_INVESTIGATOR
References: