Clinical Study of Oral Midazolam Combined With Esketamine Administered Intranasally for Pediatric Preoperative Sedation

Second Affiliated Hospital of Wenzhou Medical University126 enrolled

Overview

Children are prone to anxiety and even fear before surgery, and such adverse emotions may not only lead to poor induction of anesthesia, but also increase the incidence of postoperative agitation and even lead to postoperative behavioral changes in children. There are many ways to relieve pediatric anxiety, including preoperative medication, games, and cartoons. Preoperative medication is the most commonly used method to relieve pediatric anxiety.The most commonly used pediatric preoperative sedation drugs are midazolam and esketamine.However, oral midazolam may not produce a sedative effect in 20-40% of patients. A good preoperative anxiety-reducing effect was seen in only 60-80% of cases.Therefore, this trial investigates whether the intranasal combination of esketamine with oral midazolam can produce better results than each of the two drugs alone. This will provide a reference for the selection of safe, reliable and appropriate preoperative sedation methods for pediatric patients and provide evidence-based support for comfort care.

A trained member of the research team obtained a baseline The Modified Yale Preoperative Anxiety Scale(mYPAS) after obtaining consent. And corresponding study medication is administered about 30-40 minutes before the anesthesia induction.Vital signs were measured every 5 min after study medication administration.The sedation scores of the children were recorded with University of Michigan Sedation Scale (UMSS) every 10 minutes.The onset time of satisfactory sedation and parental separation anxiety scale was noted.Then recorded the degree of cooperation during inhalation anesthesia induction and recovery times.Moreover, recorded the pediatric anesthesia emergence delirium scale (PAED) during the recovery period.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Interventions

MidazolamDRUG

oral midazolam 0.5mg.kg-1 approximately 30-40 minutes before surgery using a computer-generated random number table.

EsketamineDRUG

intranasal esketamine 1mg/kg approximately 30-40 mins before surgery using a computer-generated random number table.

midazolam and esketamineDRUG

oral midazolam 0.3mg/kg and intranasal esketamine 0.6mg/kg approximately 30-40 mins before surgery using a computer-generated random number table.

Eligibility

Sex: ALLMin age: 2 YearsMax age: 6 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: 1. with American Society of Anesthesiologists (ASA) physical status I or II； 2. aged 2-6 years； 3. children with weight for age within the normal range 4. were scheduled lower abdominal and perineal surgery with an expected operation time shorter than 30 minutes. Exclusion Criteria: 1. Children who had gastrointestinal,Cardiovascular or endocrine dysfunction; 2. contraindication to preoperative sedation or had a known allergy or hypersensitive reaction to either esketamine or midazolam; 3. with any nasal pathology,organ dysfunction; 4. recently respiratory infection, mental disorder; 5. other reasons that researchers hold it is not appropriate to participate in this trial.

Outcomes

Primary Outcomes

The degree of cooperation during inhalation anesthesia induction

Induction Compliance Checklist range from 0 through 10,and lower scores indicate the higher degree of cooperation during inhalation anesthesia induction

Time frame: During inhalation anesthesia induction

Secondary Outcomes

Anxiety before induction of anesthesia

The Modified Yale Preoperative Anxiety Scale: The 22-item measure has five behavioural categories: activity, emotional expressivity, alertness and arousal, vocalizations, and interaction with parents. Total scores range from 23.33 through 100 with higher scores indicating greater anxiety.

Time frame: Each 10 minutes during the forty minutes of preoperative period

The level of sedation

University of Michigan Sedation Scale: 0 -Awake/Alert 1 -Minimally Sedated: Tired/sleepy, appropriate response to verbal conversation and/or sounds. 2- Moderately Sedated: Somnolent/sleeping, easily aroused with light tactile stimulation. 3 - Deeply Sedated: Deep sleep, arousable only with significant physical stimulation. 4 - Unarousable. higher scores mean a higher levels of sedation.

Time frame: Each 10 minutes during the forty minutes of preoperative period

Parental separation anxiety scale

A four-point parental separation anxiety scale as follows: 1. -Easy separation, 2. -Whimpers, but is easily reassured, not clinging, 3. \- Cries and cannot be easily reassured, but not clinging to parents, 4. \- Crying and clinging to parents. The scores of 1 and 2 signified acceptable separation whereas scores of 3 and 4 were classified as difficult separation.

Time frame: During the preoperative period

Recovery times

The time from discontinuation of sevoflurane to the first open eye of the children and to achieve aldrete≥9

Time frame: Within up to 30 minutes after child's first eye opening in the postoperative period

Pediatric anesthesia emergence delirium

The pediatric anesthesia emergence delirium scale consists of four items. Each item is scored 0-4 yielding a total between 0 and 20. The degree of emergence delirium increased directly with the total score.pediatric anesthesia emergence delirium scale ≥12 at any time indicates presence of emergence delirium.

Time frame: Within up to 15-30 minutes after child's first eye opening in the postoperative period

Number of children with adverse effects

Number of children with adverse effects 1. Bradycardia and/or hypotension need for hemodynamic support 2. Desaturation is defined as Oxygen desaturation \<90% 3. Salivation 4. Any adverse effects requiring interventions

Time frame: Up to 24 hours including preoperative, intraoperative, and postoperative periods