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CTRI Number  CTRI/2025/07/090123 [Registered on: 03/07/2025] Trial Registered Prospectively
Last Modified On: 03/07/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   A study comparing the risk of having full Stomach during anaesthesia in children Who fast for shorter vs. longer times before surgery 
Scientific Title of Study   Comparison of Incidence of High Risk Stomach in Minimally Fasted with Conventionally Fasted Paediatric Patients Posted for Elective Surgery: A Prospective, Randomized, Single Blinded Study 
Trial Acronym  nil 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Rakshith M Adiga 
Designation  Senior Resident 
Affiliation  All India Institute of Medical Sciences, Rishikesh 
Address  Senior Resident (Acad) Paediatric anaesthesiology Department of Anaesthesiology Level 6, Block A AIIMS Rishikesh

Dehradun
UTTARANCHAL
249203
India 
Phone  9481960443  
Fax    
Email  rmadiga@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Yashwant Singh Payal 
Designation  Professor  
Affiliation  All India Institute of Medical Sciences, Rishikesh 
Address  Department of Anaesthesiology Level 6, Block A AIIMS Rishikesh

Dehradun
UTTARANCHAL
249203
India 
Phone  9411789762  
Fax    
Email  dryspayal05@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Rakshith M Adiga 
Designation  Senior Resident 
Affiliation  All India Institute of Medical Sciences, Rishikesh 
Address  Senior Resident (Acad) Paediatric anaesthesiology Department of Anaesthesiology Level 6, Block A AIIMS Rishikesh

Dehradun
UTTARANCHAL
249203
India 
Phone  9481960443  
Fax    
Email  rmadiga@gmail.com  
 
Source of Monetary or Material Support  
All India Institute of Medical Sciences, Rishikesh All India Institute of Medical Sciences · Virbhadra Road, Rishikesh · Uttarakhand- 249 203 
 
Primary Sponsor  
Name  All India Institute of Medical Sciences, Rishikesh 
Address  All India Institute of Medical Sciences · Virbhadra Road, Rishikesh · Uttarakhand- 249 203 
Type of Sponsor  Government medical college 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Rakshith M Adiga  All India Institute of Medical Sciences, Rishikesh  Main OT, OR 2-10, Level 6, Block B All India Institute of Medical Sciences · Virbhadra Road, Rishikesh · Uttarakhand- 249 203
Dehradun
UTTARANCHAL 
9481960443

rmadiga@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee, AIIMS Rishikesh  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K00-K95||Diseases of the digestive system, (2) ICD-10 Condition: N00-N99||Diseases of the genitourinary system, (3) ICD-10 Condition: B67||Echinococcosis, (4) ICD-10 Condition: J85-J86||Suppurative and necrotic conditions of the lower respiratory tract, (5) ICD-10 Condition: J90-J94||Other diseases of the pleura, (6) ICD-10 Condition: C00-D49||Neoplasms, (7) ICD-10 Condition: H00-H59||Diseases of the eye and adnexa, (8) ICD-10 Condition: M00-M99||Diseases of the musculoskeletal system and connective tissue, (9) ICD-10 Condition: E20-E35||Disorders of other endocrine glands, (10) ICD-10 Condition: E00-E07||Disorders of thyroid gland, (11) ICD-10 Condition: H60-H95||Diseases of the ear and mastoid process,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Conventional fasting   Will receive standard NPO instructions: 8 hours for solid foods, 6 hours for milk and formula feeds, and 2 hours for liberal clear fluids prior to surgery 
Intervention  Minimal Fasting  Will receive NPO instructions: 8 hours for solid foods, 6 hours for milk and formula feeds, and 2 hours for liberal clear fluids. Following this, sips of clear fluid( water/ 5%dextrose) upto 3ml/kg/hour, not more than 30ml/hour until being shifted from ward to preoperative area 
 
Inclusion Criteria  
Age From  2.00 Year(s)
Age To  12.00 Year(s)
Gender  Both 
Details  ASA I and II
Posted for elective surgery 
 
ExclusionCriteria 
Details  Past H/O abdominal surgery 
H/O gastrointestinal disorders, GERD, achalasia cardia
Anticipated difficult airway
Prior H/O pulmonary aspiration
Presence of delayed development or neurological impairment
Last case of the list 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Presence or absence of high risk stomach, defined as gastric content more than 1.25ml/kg measured using gastric ultrasound in right lateral decubitus position  Immediately after being shifted to preoperative area from the ward. Only one reading will be taken 
 
Secondary Outcome  
Outcome  TimePoints 
Volume of gastric content measured using gastric ultrasound in right lateral decubitus position  On being shifted to preoperative area from the ward. If the first reading shows high risk stomach, second reading will be taken after a period 2 hours is passed after the previous sip of water 
Anxiety level using mYAS tool  On being shifted to preoperative area from the ward, prior to measuring gastric volume. Only a single reading will be taken 
Exact duration of NPO, for solids & clear fluids  At the time of induction, just before starting pre oxygenation.
Only one single reading will be noted 
Serum cortisol  Post induction, prior to surgical incision. Only one single sample will be drawn 
Any adverse events like vomiting, aspiration, desaturation, bronchospasm, laryngospasm  During the period of induction till starting of surgery  
 
Target Sample Size   Total Sample Size="140"
Sample Size from India="140" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   14/07/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

Preoperative fasting reduces the risk of aspiration during anaesthesia, but prolonged fasting in children can lead to discomfort, anxiety, and doesn’t always guarantee an empty stomach. Gastric ultrasound is a reliable, non-invasive method for assessing gastric volume, with >1.25 ml/kg considered high risk for aspiration.

This study compares gastric volumes in two pediatric groups ages 2-12 years posted for elective surgery:

  • Group C (Conventional Fasting): Standard fasting—8 hrs for solids, 6 hrs for milk/formula, 2 hrs for clear fluids.

  • Group M (Minimal NPO): Same instructions for solid/milk fasting, but allowed sips of water (up to 3 ml/kg/hr, max 30 ml/hr) until transfer to OR.

All patients receive IV fluids according to Holliday-Segar formula. Gastric volume is measured using ultrasound in the pre-op area by a blinded investigator, with calculations based on CSA and Spencer’s formula - Volume = -7.8 + (3.5 × RLD CSA) + (0.127 × age in months). Volume of 1.25ml/kg is taken as threshold for high risk stomach.  Anxiety is assessed using mYAS; Serum cortisol is measured post-induction. Additionally, adverse events if any, during induction are noted. Method of induction and the choice of airway device will be as per the plan of the anaesthesiologist managing the patient.

If gastric volume exceeds the high-risk threshold and the last intake is too recent, surgery is postponed and reassessment is done. If risk persists despite adequate fasting, a modified rapid sequence induction (RSI) is performed, with intubation and gastric suction.

All randomized patients are included in the final analysis, regardless of gastric volume at first scan.

 
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