Adjustable Headrests, Obese Patients, Ventilation Function
Conditions
Brief summary
The aim of this study is to observe the effect of adjustable headrests on ventilation function in overweight and obese patients through clinical experiments, and to explore the impact on the incidence of hypoxemia during painless curettage in overweight and obese patients. Participants will be randomly allocated to three groups: the supine head-straight position group(Group A), the supine head-lateral position group(Group B), and the adjustable headrest group(Group C). These three groups of patients underwent painless curettage surgery in the daytime operating room and the occurrence of hypoxemia will be observed.
Interventions
the supine head-lateral position group: during the perioperative period, keep the patient's head tilted to the left or right
the adjustable headrest group: placing an adjustable pillows on the patient's head to align the patient's external auditory canal horizontally with the sternum
the supine head-straight position group: during the perioperative period, keep the patient's head upright
Sponsors
Study design
Eligibility
Inclusion criteria
* patients who choose to have painless surgical abortion * Body mass index greater than 24 * the American Society of Anesthesiologists (ASA) physical status ranked I-II * competent to provide informed consent
Exclusion criteria
* Abnormal lung function or respiratory system diseases * Airway obstruction or respiratory malformation * cervical spondylosis * psychiatric disorders
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Incidence of hypoxemia | 1,2 and 3 minutes after anesthesia induction | Incidence of hypoxemia will be recorded after anesthesia induction |
| Respiratory rate and oxygen saturation | The time of entering the daytime operating room, intraoperative period., 1 minute after the patient wakes up | Respiratory rate and oxygen saturation will be recorded at 4 time points, including the time of entering the daytime operating room(Time 0), 1 minute after anesthesia induction(Time 1), 2 minute after anesthesia induction(Time 2), 3 minute after anesthesia induction(Time 3), 1 minute after the patient wakes up(Time 4) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Heart rate and blood pressure | The time of entering the daytime operating room, intraoperative period, 1 minute after the patient wakes up | heart rate and blood pressure will be recorded at 4 time points, including the time of entering the daytime operating room(Time 0), 1 minute after anesthesia induction(Time 1), 2 minute after anesthesia induction(Time 2), 3 minute after anesthesia induction(Time 3), 1 minute after the patient wakes up(Time 4) |
Countries
China