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CTRI Number  CTRI/2023/06/053679 [Registered on: 08/06/2023] Trial Registered Prospectively
Last Modified On: 15/08/2024
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Nasogastric tube insertion during endotracheal tube cuff deflated state. 
Scientific Title of Study   Success rate of nasogastric tube insertion in anaesthetised, intubated, adult patients: A comparison between endotracheal tube cuff inflated and deflated states 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr NAZIMUDDIN PAIK 
Designation  Post Graduate Trainee Anaesthesiology 
Affiliation  Institute of Post Graduate Medical Education and Research,Kolkata 
Address  Institute of Post Graduate Medical Education and Research, Department of Anaesthesiology, 244 AJC Bose Road,Kolkata-700020 KOlkata

Kolkata
WEST BENGAL
700020
India 
Phone  09434824435  
Fax    
Email  nazim9797@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr MOHANCHANDRA MANDAL 
Designation  Professor, Department of Anaesthesiology 
Affiliation  Institute of Post Graduate Medical Education and Research,Kolkata 
Address  Institute of Post Graduate Medical Education and Research, Department of Anaesthesiology, 244 AJC Bose Road,Kolkata-700020 KOlkata

Kolkata
WEST BENGAL
700020
India 
Phone  09433072820  
Fax    
Email  drmcmandal@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr MOHANCHANDRA MANDAL 
Designation  Professor, Department of Anaesthesiology 
Affiliation  Institute of Post Graduate Medical Education and Research,Kolkata 
Address  Institute of Post Graduate Medical Education and Research, Department of Anaesthesiology, 244 AJC Bose Road,Kolkata-700020 KOlkata

Kolkata
WEST BENGAL
700020
India 
Phone  09433072820  
Fax    
Email  drmcmandal@gmail.com  
 
Source of Monetary or Material Support  
Department of Anaesthesiology,Institute of Post Graduate Medical Education and Research,Kolkata 
 
Primary Sponsor  
Name  Department of Anaesthesiology 
Address  Institute of Post Graduate Medical Education and Research,244 AJC Bose Road,Kolkata-700020 
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 
Dr NAZIMUDDIN PAIK  Institute of Post Graduate Medical Education and Research and SSKM Hospital  Main surgery operation room theatre.3rd Floor main Block. Institute of Post Graduate Medical Education and Research, Department of Anaesthesiology, 244 AJC Bose Road,Kolkata-700020 KOlkata
Kolkata
WEST BENGAL 
9434824435

nazim9797@gmail.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
IPGME&R Research Oversight Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  , (1) ICD-10 Condition: K669||Disorder of peritoneum, unspecified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nasogastric tube insertion in a condition of the Endotracheal tube cuff deflated state  To determine whether naso gastric tube insertion can be more successful with the endotracheal tube cuff deflated state. 
Comparator Agent  Nasogastric tube insertion in a condition of the Endotracheal tube cuff inflated state  Nasogastric tube insertion usually done with endo tracheal tube cuff inflated state. Hence it will act as a comparator for the new technique i.e., nasogastric tube insertion with deflated state. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  90.00 Year(s)
Gender  Both 
Details  Adult above 18 years patients undergoing elective Abdominal surgeries that require intra-operative nasogastric tube insertion. 
 
ExclusionCriteria 
Details  1.Anatomical/structural abnormalities such as gross deviated nasal septum, abnormality involving lips and palate.
2.Patients with oral, nasal pharyngeal , oesophageal mass.
3.Patients with significant injuries involving head neck.
4.Patients with thrombocytopenia or coagulation disorder. 
 
Method of Generating Random Sequence   Coin toss, Lottery, toss of dice, shuffling cards etc 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
Proportion of patients in whom successful nasogastric tube insertion will be possible in first attempt.  Successful insertion of Nasogastric tube in first attempt. more than one attempt will be considered as failure 
 
Secondary Outcome  
Outcome  TimePoints 
1.Time taken for Successful insertion of nasogastric tube.it is also called procedure time.
2.Adverse events during the procedure like tube kinking, coiling etc. 
in the Intra operative period after endotracheal intubation, nasogastric tube insertion will be done. 
 
Target Sample Size   Total Sample Size="244"
Sample Size from India="244" 
Final Enrollment numbers achieved (Total)= "244"
Final Enrollment numbers achieved (India)="244" 
Phase of Trial   N/A 
Date of First Enrollment (India)   01/07/2023 
Date of Study Completion (India) 30/06/2024 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details   Nil 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary
Modification(s)  
Successful placement of nasogastric tube (NGT) in anaesthetised patients in operating room under General  Anaesthesia appears to be challenging one compared with its insertion in awake patients owing to lack of patients cooperation in the former. In the study a comparison was done between the nasogastric tube insertion with endotracheal tube cuff inflated state and that with endotracheal cuff deflated state. Comparison was done in terms of success in the first attempt, procedure time and incidence of adverse events. 
In other words, the present study was conducted to compare the first-attempt success rate (primary outcome) of blind NGT insertion in neutral position between patients with ETT cuff inflated state and those with ETT deflated state; using “throat pack in-situ” as additional safety measure. Data from all 244 patients were available for analysis. Patients of both the two groups were comparable regarding their demographic parameters. 

NGT insertion with ETT cuff deflated was feasible in a considerably greater number of patients compared with those where ETT cuff was kept inflated. In the current study, NGT insertion was possible in considerably more proportion of patients with the ETT cuff at deflated state compared with cuff at inflated state (approximated, 85% versus 55%, respectively). NGT placement with ETT cuff deflated state achieved about 30% more success rate. 

The procedure time for NGT placement was considerably longer with ETT cuff inflated state compared to ETT cuff deflated state (38.1 versus 16.8 seconds, respectively. 
In the present study, quicker placement of NGT was possible with the ETT cuff at deflated state than inflated state (approximated, 17 seconds versus 38 seconds, respectively). Thus, ETT cuff deflated state yielded about 20 seconds quicker placement of NGT.


Mean arterial pressure (MAP) and heart rate (HR) were noted at different time points during the procedure: baseline, before NGT insertion, and after NGT insertion. MAP and HR were found to be comparable at all observed time-points between the inflated cuff and deflated cuff groups. In the present study, heart rate and MAP were found comparable at all points of observations between the two groups. This translates into fact that the process of tracheal cuff deflation and re-inflation for a brief period had produced a non-significant hemodynamic response.  

Although higher adverse events were observed with ETT cuff inflated state, the difference between the two groups was not significant when analyzed. 

Limitations
In spite of every sincere effort the present study has some lacunae. This was a single-center study. Auscultation method was used for confirmation of NGT instead of more robust method such as ultrasonography, pH paper or the gold standard- the X-ray, owing to limited resource.  The study was carried out in a tertiary care hospital, so hospital bias cannot be ruled out. Further research could explore additional factors across the larger and more diverse patient groups.

CONCLUSION
Endotracheal cuff significantly affects the success rate of nasogastric tube insertion. The endotracheal tube cuff deflation-assisted technique improved the chances of successful nasogastric tube placement. It is also associated with reduced adverse events such as bleeding by avoiding multiple attempts.  
 
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