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CTRI Number  CTRI/2024/11/076935 [Registered on: 18/11/2024] Trial Registered Prospectively
Last Modified On: 11/04/2025
Post Graduate Thesis  No 
Type of Trial  Observational 
Type of Study   Prospective observational 
Study Design  Non-randomized, Multiple Arm Trial 
Public Title of Study   Validation of BTL-001-2 ABPM Blood Pressure Instrument.  
Scientific Title of Study   A Clinical Study to Validate the Accuracy of BTL-001-2 ABPM (Ambulatory Non-Invasive Blood Pressure Sphygmomanometer) in Conformance with ISO 81060 – 2: 2018 + A1:2020 and A2:2024  
Trial Acronym  NA 
Secondary IDs if Any  
Secondary ID  Identifier 
21PR0173-008  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Meghana Murthy 
Designation  Consultant Physician 
Affiliation  Vagus Super Specialty Hospital 
Address  Vagus Super Specialty Hospital Pvt Ltd No 67 8 18th Cross 4th main Malleswaram Bengaluru

Bangalore
KARNATAKA
560055
India 
Phone  08151994080  
Fax    
Email  meggydoc@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Arabinda Patnaik 
Designation  Associate Director, Project Operations 
Affiliation  Syncorp Health Pvt. Ltd.  
Address  No 6 3rd Floor second Main Road sarvobhaogam Nagar Arekere Bangalore

Bangalore
KARNATAKA
560076
India 
Phone  9014308214  
Fax    
Email  arvind.p@syncorphealth.com  
 
Details of Contact Person
Public Query
 
Name  Arabinda Patnaik 
Designation  Associate Director, Project Operations 
Affiliation  Syncorp Health Pvt. Ltd.  
Address  No 6 3rd Floor second Main Road sarvobhaogam Nagar Arekere Bangalore


KARNATAKA
560076
India 
Phone  9014308214  
Fax    
Email  arvind.p@syncorphealth.com  
 
Source of Monetary or Material Support  
Vagus Super Specialty Hospital Pvt Ltd No 67 8 18th Cross 4th main Malleswaram Bengaluru Karnataka India 560055 
 
Primary Sponsor  
Name  BTL India Pvt Ltd 
Address  7th Floor, Tower 1, Umiya Business Bay, Embassy Tech Square Main Rd, Kaverappa Layout, Kadubeesanahalli, Kadubeesanahalli, Bengaluru, Karnataka 560103  
Type of Sponsor  Pharmaceutical industry-Indian 
 
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 Meghana Murthy  Vagus Super Specialty Hospital  Department of General Medicine, Room-3, Ground Floor, No 67 8 18th Cross 4th main Malleswaram Bengaluru
Bangalore
KARNATAKA 
08151994080

meggydoc@gmail.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 2  
Name of Committee  Approval Status 
Sri Durgamba Independent Ethics Committee  Approved 
Sri Durgamba Independent Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Blood Pressure Measurements 
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  BTL-001-2 ABPM  ABPM (Ambulatory Non-Invasive Blood Pressure Sphygmomanometer) 
Comparator Agent  Diamond®  BPMR-111 Regular Blood Pressure monitor manufactured by Diamond® 
 
Inclusion Criteria
Modification(s)  
Age From  3.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  1. Participants grater than or equal 3 years of age
2. Arm circumference between 14 cm - 50 cm.
3. Willing to participate must be able to provide an informed
consent or have legally authorized representative consent to
participate.
4. Subjects that can tolerate a waiting period for up to 1 hour.
 
 
ExclusionCriteria 
Details  1. Arm circumference less than 14 cm. or greater than 50 cm.
2. Irregular heart rhythm (bigeminy, trigeminy, isolated
ventricular premature beat (VPB), atrial fibrillation)
3. Korotkoffs sound K1 or K5 not audible.
4. Musculoskeletal disorder that prevents a non-invasive device to be inflated/deflated on the arm.
5. Unwilling to volunteer to participate and to sign the study specific informed consent form.
6. Patients suffering with Parkinson’s disease or other diseases with tremors.
7. Patients with coagulation disturbances.
8. Patients with serious mobility or other impairments without supervision.
9. Patients requiring urgency/emergency cardiac care
10. History of bleeding disorder and intake of anticoagulant medication
11. Persistence of Korotkoff sounds until near zero pressure
For the Phase 2 (ambulatory monitoring) the following
exclusion criteria shall apply:
12. History of coronary artery disease with angina on exertion
13. History of allergic airway disease, bronchial asthma or
chronic bronchitis
14. Poor exercise tolerance
15. Subjects who are breathless on exertion or at rest
16. Subjects experiencing painful arthritic symptoms 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
The primary objective of this study is to provide clinical
validation to ISO 81060-2:2018 + A1:2020 and A2:2024 for
non-invasive blood pressure measurement accuracy for the
BTL-001-2 ABPM non-invasive blood pressure monitoring
device on the intended population including Ambulatory BP
monitoring and pregnant women 
1st reading
2nd reading
3rd reading
4th reading
5th reading
6th reading
7th reading
8th Reading 
 
Secondary Outcome  
Outcome  TimePoints 
Documenting adverse events (AEs), serious adverse events
(SAEs), and device deficiencies 
1st reading
2nd reading
3rd reading
4th reading
5th reading
6th reading
7th reading
8th Reading 
 
Target Sample Size   Total Sample Size="200"
Sample Size from India="200" 
Final Enrollment numbers achieved (Total)= "200"
Final Enrollment numbers achieved (India)="200" 
Phase of Trial   N/A 
Date of First Enrollment (India)   11/12/2024 
Date of Study Completion (India) 18/07/2025 
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)   Not Applicable 
Recruitment Status of Trial (India)  Completed 
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
Modification(s)  
The BTL-001-2 ABPM blood pressure monitoring device is planned to be evaluated in a minimum of 200 subjects throughout all study phases that will approximate the distribution of blood pressures as outlined in ISO 81060-2:2018 + A1: 2020 and A2:2024. Two trained observers who are medical professionals will observe (listen to) the Korotkoff sounds at the brachial artery of the arm. The reference blood pressure measurements by the medical professionals will be performed sequentially with the device under test. The medical professionals will complete initial baseline auscultatory reference blood pressure measurements and device under test (BTL-001-2 ABPM) measurements. This is followed by minimum 3 and a maximum of 8 valid paired blood pressure readings of auscultatory reference blood pressure measurements alternated with device under test measurements. Once the BTL-001-2 ABPM (Ambulatory Non-Invasive Blood Pressure Sphygmomanometer) passes the clinical investigation as per the requirements ISO 81060 – 2: 2018 + A1:2020 and A2:2024 given in sections 5.1 and 5.2 (Phase 1) then it shall undergo investigation in at least 35 adult subjects according to 5.2.6 (Phase 2, ambulatory monitoring) and 5.2 in at least an additional 45 adult pregnant women (Phase 3) and 35 children of age 3-12 years (Phase 4). The prerequisite to initiate Phases 2-4 is a successful result of the Phase 1. It is expected that the data collection will take up to approximately 1 hour per subject. There is no additional follow-up required for the study. For accuracy claims, the test device measurements will be compared to those made by the reference device. The data for the final analysis will contain no fewer than 85 subjects with a minimum of 255 valid paired observations (Phase 1). Further no fewer than 35 subjects with a minimum of 11 subjects with a BP >140 mmHg will be analyzed with a minimum of 3 valid pairs in Phase 2. Also, no fewer than 45 pregnant subjects who are normotensive, hypertensive and pre-eclampsia with a minimum of 3 valid pairs will be analyzed in Phase 3. Lastly, no fewer than 35 children of age 3-12 years minimum of 3 valid pairs will be analyzed in Phase 4. At least 90% of the subjects will contribute 3 valid paired observations.  
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