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CTRI Number  CTRI/2025/03/082577 [Registered on: 18/03/2025] Trial Registered Prospectively
Last Modified On: 16/03/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Medical Device
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Multiple Arm Trial 
Public Title of Study   A study comparing how well three different airway devices—i-gel, Blockbuster, and Ambu Aura LMA—help patients breathe during short surgeries. 
Scientific Title of Study   Comparative study to determine the efficacy of i-gel, BlockBuster, and Ambu Aura as ventilatory devices in short surgical procedures. 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Ashish Bisht 
Designation  junior resident 2 
Affiliation  Government medical college, Haldwani 
Address  Depatment of Anaesthesiology, critical care, pain and palliative medicine, 2nd floor susheela tiwari hospital, Haldwani

Nainital
UTTARANCHAL
263139
India 
Phone  9461903995  
Fax    
Email  Dr.ashibisht@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Geeta Bandari 
Designation  Professor and HOD, Department of anaesthesiology  
Affiliation  Government medical college, Haldwani 
Address  Depatment of Anaesthesiology, critical care, pain and palliative medicine, 2nd floor susheela tiwari hospital, Haldwani

Nainital
UTTARANCHAL
263139
India 
Phone  8650655556  
Fax    
Email  bhandari_geetantl@rediffmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Geeta Bandari 
Designation  Professor and HOD, Department of anaesthesiology  
Affiliation  Government medical college, Haldwani 
Address  Depatment of Anaesthesiology, critical care, pain and palliative medicine, 2nd floor susheela tiwari hospital, Haldwani

Nainital
UTTARANCHAL
263139
India 
Phone  8650655556  
Fax    
Email  bhandari_geetantl@rediffmail.com  
 
Source of Monetary or Material Support  
Department of anaesthesialogy, critical care, pain and palliative medicine, Susheela Tiwari Government hospital, haldwani, uttrakhand, 263139 
 
Primary Sponsor  
Name  Dr. Ashish Bisht 
Address  Department of anaesthesialogy, critical care, pain and palliative medicine, Susheela Tiwari Government hospital, haldwani, uttrakhand, 263139 
Type of Sponsor  Other [self] 
 
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 
Dr Ashish Bisht  Susheela Tiwari Hospital  Department of anesthesiology, critical care, pain and palliative medicine, 2nd floor, Susheela Tiwari Government hospital, haldwani, Uttarakhand, 263139
Nainital
UTTARANCHAL 
9461903995

dr.ashibisht@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL ETHICS COMMITTEE  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: H60-H95||Diseases of the ear and mastoid process, (3) ICD-10 Condition: H00-H59||Diseases of the eye and adnexa, (4) ICD-10 Condition: N00-N99||Diseases of the genitourinary system, (5) ICD-10 Condition: N00-N99||Diseases of the genitourinary system, (6) ICD-10 Condition: M00-M99||Diseases of the musculoskeletal system and connective tissue,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Ambu Aura  The study population is divided into 3 groups of 30 patients each. Group I used i-gel as a ventilatory device; Group B used BlockBuster as a ventilatory device; and Group A used Ambu Aura as a ventilatory device instead of traditional endotracheal intubation. In group A using Ambu Aura, oropharyngeal leak pressure and other parameters such as vitals, side effects, etc. will be compared with other LMA used as a ventilatory device instead of endotracheal intubation.  
Comparator Agent  BlockBuster  The study population is divided into 3 groups of 30 patients each. Group I used i-gel as a ventilatory device; Group B used BlockBuster as a ventilatory device; and Group A used Ambu Aura as a ventilatory device instead of traditional endotracheal intubation. In group B using BlockBuster, oropharyngeal leak pressure and other parameters such as vitals, side effects, etc. will be compared with other LMA used as a ventilatory device instead of endotracheal intubation.  
Intervention  i-gel  The study population is divided into 3 groups of 30 patients each. Group I used i-gel as a ventilatory device; Group B used BlockBuster as a ventilatory device; and Group A used Ambu Aura as a ventilatory device instead of traditional endotracheal intubation. In group I using i-gel, oropharyngeal leak pressure and other parameters such as vitals, side effects, etc. will be compared with other LMA used as a ventilatory device instead of endotracheal intubation.  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  1.Patients giving informed written consent for participation in the study.
2.Patients posted for short surgeries (less than 90mins) under general anesthesia.
3.Age of the patient between 18-65 of either sex.
4.Patients belonging to American Society of Anesthesiologists- physical status I or II.
5.Patients belonging to Modified Mallampati class I and II.
 
 
ExclusionCriteria 
Details  1.Patients with predicted difficult airway such as mouth opening less than 2 cm, (oropharynx, larynx) pathology.
2.Patients with head injury, psychiatric disorder, respiratory tract, endocrine disorder, patients with risk of regurgitation such as gastroesophageal reflux disease, hiatus hernia, esophageal varices, pregnant patient etc.
3.Patient who are obese (BMI more than 35 kg/m2)
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To compare the oropharyngeal leak pressure for providing airway seal pressure of i-gel, BlockBuster, and Ambu Aura.  After 5 minutes of positioning and fixation of the device, oropharyngeal leak pressure will be assessed. It will be measured by palpable or audible leak of gas in suprasternal notch and auscultation of epigastrium after closing the expiratory valve of the circle system to 30 cm of H2O at a fixed gas flow (only O2) of 6 L/min and airway pressure at steady state noted on the visual pressure gauge included in modern anesthesia machines. We will not permit it to exceed 30 cm of H2O. 
 
Secondary Outcome  
Outcome  TimePoints 
To compare effective airway insertion time, number of insertions attempts and ease of insertion of device and gastric tube.   
To compare hemodynamics & ventilatory parameters, intraoperative & post-operative complications (oral trauma, sore throat, dyspnea etc.) during use of the devices, if any  Vital parameters like pulse rate, blood pressure, SpO2, EtCO2, & ventilator parameters will be noted at baseline (0 minutes) after induction of anesthesia, after insertion, 10 minutes after insertion, & immediately after removal of the device & after completion of surgery.  
 
Target Sample Size   Total Sample Size="90"
Sample Size from India="90" 
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   Phase 4 
Date of First Enrollment (India)   29/03/2025 
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 Applicable 
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  
The present study is a Prospective, Randomized and Comparative study done after approval of Institutional Ethics Committee in  patients satisfying all inclusion and exclusion Criteria planned for short surgeries under GA. Material used were i-gel, Ambu aura, Blockbuster, Anaesthesia workstation, suction apparatus, Laryngoscope and ET Tubes of various sizes. After careful preoperative assessment of all patients’ standard monitors including NIBP, ECG, and pulse oximeter will be attached to the patient.

The study population is divided into three groups of 30 each. Group i used i-gel , Group A used Ambu Aura, Group B used Blockbuster as ventilatory device.

In the operating room, an 18G IV cannula is inserted into both hands. Ringer lactate solution is infused at 10ml/kg. Patients receive 100% oxygen for 3 minutes, followed by premedication. Standard monitoring is connected. Anesthesia is induced with propofol  and vecuronium and maintained with oxygen, nitrous oxide, and sevoflurane after introducing allocated SAD.

parameters like-successful insertion time, number of attempts of insertion, oropharyngeal leak pressure and vitals like- pulse rate, blood pressure, SpO2, EtCO2 and ventilator parameters will be noted before induction of anesthesia, throughout surgery and immediately after removal of the device after completion of surgery

 
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