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NCT Number: NCT06929000

A Study on Application of Adjustable Headrest in Painless Curettage Surgery for Overweight and Obese Patients

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.

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Key information

Conditions

Adjustable Headrests Obese Patients Ventilation Function

Age range

20 year–50 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Maternal and Child Health Hospital of Hubei Province

Wuhan, Hubei, 430000, China

Location status: Recruiting

Location contact

Na Li, MD

CONTACT

[email protected]

+862763490107

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

the supine head-lateral position group

Other

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

Other

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

Other

the supine head-straight position group: during the perioperative period, keep the patient's head upright

Primary outcomes

  1. Incidence of hypoxemia

    Time frame: 1,2 and 3 minutes after anesthesia induction

    Incidence of hypoxemia will be recorded after anesthesia induction

  2. Respiratory rate and oxygen saturation

    Time frame: 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 outcomes

  1. Heart rate and blood pressure

    Time frame: 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)

Study contacts

Contact information is provided by the study sponsor or research team.

NaLi, MD

CONTACT

[email protected]

+862763490107

Sponsors and collaborators

Lead sponsor

Maternal and Child Health Hospital of Hubei Province

Other

Registry information

Official study title

A Study on Application of Adjustable Headrest in Painless Curettage Surgery for Overweight and Obese Patients: a Randomized Controlled Trial

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Apr 15, 2025
Registry last updated
Apr 15, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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