Clinical trial NCT04633577: Effect of Intravenous Lidocaine on Propofol Requirements
Official title: The Effect of Intravenous Lidocaine on Propofol Requirements in Patients Undergoing Hysteroscopy and Diagnostic Curettage
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Analgesia
Keywords: intravenous lidocaine
propofol
pain score
fatigue score
dose
Lead sponsor: General Hospital of Ningxia Medical University
Sponsor class: OTHER
First posted: 2020-11-18
Enrollment: 40
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: Lidocaine, an amide local anesthetic, has advantages of low price and easily obtaining. Intravenous lidocaine (IVL)initially has been used in the treatment of arrhythmia. It was demonstrated that IVL had analgesic effect, especially in colorectal surgery, but remained controversy in other types of surgeries. Other beneficial effects, such as prevention of hyperalgesia and propofol-induced injection pain, reduction of incidence of postoperative ileus and nausea and vomiting and anti-inflammatory also were proposed.

Detailed description: The most frequent drugs for procedural sedation and analgesia are propofol, benzodiazepines and opioids. However, these drugs may cause respiratory depression and circulatory instability. Combination will increase the risk of hypoxia and apnea.

In China, most anesthesia for hysteroscopy and gastroenteroscopy is procedural sedation and analgesia(PAS) provided by anesthetists. Foester et,al. have been tested that IVL could significantly reduce propofol requirements 、postoperative pain and fatigue scores in colonoscopy. Chen,et,al. find the same effect of IVL in elderly. However, there is no research reporting IVL used in hysteroscopy and diagnostic curettage. So, our main objective is to evaluate the effect of intravenous lidocaine on propofol requirements in patients undergoing hysteroscopy and diagnostic curettage.

Eligibility criteria: Inclusion Criteria:

* Patients who underwent hysteroscopy and diagnostic curettage, American Society of Anesthesiologist' physical status 1-2, BMI 18.5-24.9 kg/m2,

Exclusion Criteria:

* Patients with known allergy to lidocaine or other local anesthetics, taken sedatives and analgesics within 1 week before surgery, mental and neurological diseases, hearing impairment, unwilling to sign informed consent or participate in the study, serious arrhythmia and organic heart disease.

Primary outcomes:
measure: Propofol Requirements
timeFrame: from loss of conciousness to end of procedure
Secondary outcomes:
measure: Pain score
timeFrame: immediately, 15 min, 30 min in PACU
measure: Fatigue score
timeFrame: immediately, 15 min, 30 min in PACU
Other outcomes:
Locations:
city: Yinchuan
country: China
facility: General Hospital of Ningxia Medical University
state: Ningxia
Study officials:
References:
citation: Forster C, Vanhaudenhuyse A, Gast P, Louis E, Hick G, Brichant JF, Joris J. Intravenous infusion of lidocaine significantly reduces propofol dose for colonoscopy: a randomised placebo-controlled study. Br J Anaesth. 2018 Nov;121(5):1059-1064. doi: 10.1016/j.bja.2018.06.019. Epub 2018 Aug 1.
citation: Chen M, Lu Y, Liu H, Fu Q, Li J, Wu J, Shangguan W. The propofol-sparing effect of intravenous lidocaine in elderly patients undergoing colonoscopy: a randomized, double-blinded, controlled study. BMC Anesthesiol. 2020 May 30;20(1):132. doi: 10.1186/s12871-020-01049-z.