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CTRI Number  CTRI/2025/10/096478 [Registered on: 27/10/2025] Trial Registered Prospectively
Last Modified On: 26/10/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Single Arm Study 
Public Title of Study   Checking for bowel blockage using bedside ultrasound in the emergency room: How well does it work 
Scientific Title of Study   Diagnostic accuracy of point of care Ultrasound for detecting small bowel obstruction in Emergency Department A Prospective Observational 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  Dr Mohammed Fahad 
Designation  Junior Resident 
Affiliation  AIIMS BHOPAL 
Address  3rd floor Trauma and Emergency Medicine department AIIMS Bhopal

Bhopal
MADHYA PRADESH
462020
India 
Phone  94968439841  
Fax    
Email  mohammed.jr2025@aiimsbhopal.edu.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr. Saurabh Trivedi 
Designation  Assistant Professor 
Affiliation  AIIMS BHOPAL 
Address  3rd floor Trauma and Emergency Medicine AIIMS Bhopal

Bhopal
MADHYA PRADESH
462020
India 
Phone  7042461338  
Fax    
Email  saurabh.tem@aiimsbhopal.edu.in  
 
Details of Contact Person
Public Query
 
Name  Dr Mohammed Fahad 
Designation  Junior Resident 
Affiliation  AIIMS BHOPAL 
Address  3rd floor Trauma and Emergency Medicine AIIMS Bhopal

Bhopal
MADHYA PRADESH
462020
India 
Phone  94968439841  
Fax    
Email  mohammed.jr2025@aiimsbhopal.edu.in  
 
Source of Monetary or Material Support  
AIIMS BHOPAL saket Nagar,Bhopal,India PIN:462020 
 
Primary Sponsor  
Name  AIIMS BHOPAL 
Address  Saket Nagar 462020 
Type of Sponsor  Research institution and hospital 
 
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 Mohammed Fahad  AIIMS BHOPAL  1st floor Trauma and Emergency Medicine department
Bhopal
MADHYA PRADESH 
94968439841

drfahadmhd7@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Human Ethics Committee- Student Research (IHEC-SR)  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: R100||Acute abdomen,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  a. Patients aged 18 to 65 years, presenting to the emergency department with symptoms and signs suggestive of small bowel obstruction, including but not limited to:
i. Abdominal pain
ii. Abdominal distension
iii. Nausea and vomiting
iv. Changes in bowel habits (e.g., obstipation)

b. Patients (or legal guardians) providing informed consent for participation in the study. 
 
ExclusionCriteria 
Details  i. Patients with hemodynamic instability precluding POCUS.
ii. Patients with known intra-abdominal malignancy or inflammatory bowel disease.
iii. Patients with a recent history of abdominal surgery (within the past 30 days)
iv. Patients who are not consenting for Ultrasound examination
v. Patients in whom CECT scan is not feasible
vi. Patients who have deranged Renal function Test.
vii .Pregnancy 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Primary Outcome

Diagnostic accuracy of individual POCUS features for small bowel obstruction diagnosis. 
1.5 years 
 
Secondary Outcome  
Outcome  TimePoints 
Diagnostic accuracy of the combined POCUS criteria.
Diagnostic accuracy of POCUS compared to CECT & X-ray.
Time-to-diagnosis (from triage to definitive diagnosis) for each modality.
Predictive value of combinations of POCUS features using logistic regression or ROC analysis. 
1.5 years 
 
Target Sample Size   Total Sample Size="91"
Sample Size from India="91" 
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)   11/11/2025 
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  
Small bowel obstruction is a common and potentially life-threatening surgical emergency frequently encountered in the emergency department. Patients often present with colicky abdominal pain, vomiting, abdominal distension, and failure to pass flatus or feces. The most common etiologies of SBO differ by region, however ,intra abdominal adhesions following prior surgery remain the leading cause in developed countries, as per both sources .Other causes include hernias, neoplasms, Crohn’s disease, volvulus, and intussusception .In recent years, point-of-care ultrasonography (POCUS) has emerged as a valuable, non-invasive, bedside tool in the emergency setting. The approach is novel in it broad age range and focus on patients with clinical features of small bowel obstruction with bed side ultrasound abdominal examination and comparing with computed tomography reports. Studies have shown that with appropriate training, emergency physicians can effectively use bedside USG to detect signs of SBO, such as dilated bowel loops, abnormal peristalsis, and transition points .Key Ultrasound Features for Diagnosing SBO includes Dilated Small Bowel Loops: Diameter >2.5 cm, Altered Peristalsis: Hyperperistalsis in early stages as the bowel attempts to overcome the blockage. Hypoperistalsis or absent peristalsis in late or ischemic stages, Identification of the Transition Point :Crucial for determining the exact site of obstruction, Bowel Wall thickness >3 mm, Presence of Free Fluid: Anechoic fluid around bowel loops or in the abdomen, Whirl sign: Suggests volvulus or twisted mesentery. Target sign: May indicate intussusception. In this study, the aim is to investigate the diagnostic accuracy of pocus for detecting small bowel obstruction in emergency department patients compared to x ray and Computed Tomography findings .By examining these, we seek to understand whether point of care ultrasound can use non-invasive tool for rapid assessment of small bowel obstruction in Emergency department .X ray ABDOMEN Findings includes Dilated small bowel loops : More than 3 cm in diameter, Air-fluid levels:. Multiple levels with a "step-ladder" appearance, Paucity of gas in the colon and rectum :Suggests distal obstruction, "String of beads" sign: Small pockets of air trapped between valvulae conniventes in a fluid-filled bowel loop .Seen best on supine films, Valvulae conniventes :Thin, closely spaced mucosal folds that traverse the full width of the bowel .CT ABDOMEN FINDINGS includes Dilated small bowel loops Diameter >2.5–3 cm, Collapsed distal bowel and colon, Transition point :The area where dilated bowel suddenly becomes collapsed, "Small bowel feces sign "Mottled gas and particulate matter in the lumen, suggesting stasis of contents ,Air-fluid levels, Strangulation or ischemia indicators :Bowel wall thickening (>3 mm), Closed-loop obstruction: U-shaped or C-shaped loop of dilated bowel. "Whirl sign" of twisted mesentery.
 
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