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To study the extent of decrease in diameter of the subclavian vein during normal and deep breathing using ultrasound machine and the fall in blood pressure after giving general anaesthesia in patients undergoing elective surgical procedures

Association between pre-anaesthetic subclavian vein collapsibility index and decrease in mean arterial pressure after induction of general anaesthesia in patients undergoing elective surgical procedures. - NIL

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2023/07/055022
Enrollment
74
Registered
2023-07-10
Start date
Unknown
Completion date
Unknown
Last updated
2023-07-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: O- Medical and Surgical

Interventions

Intervention1: NIL: NIL

Sponsors

Maulana Azad Medical College
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1. Patients having ASA (American Society of Anaesthesiologists) score 1,2 and 3.

Exclusion criteria

Exclusion criteria: 1. Patients having baseline mean arterial pressure (MAP) less than 70mmHg. 2. Presence of major vascular disease, unstable angina, valvular heart disease, heart failure or implanted pacemaker/ cardioverter. 3. Symptoms suggestive of autonomic nervous system dysfunction. 4. Portal hypertension/ Increased intra-abdominal pressure. 5. Anticipated difficult airway. 6. Patients with anatomical/ dermatological problems which preclude placement of the US probe over the infraclavicular area on the right side.

Design outcomes

Primary

MeasureTime frame
1. Association between pre-anaesthetic collapsibility index of the subclavian vein during spontaneous tidal breathing & percentage decrease in mean arterial pressure. 2. Association between pre-anaesthetic collapsibility index of the subclavian vein during deep breathing & percentage decrease in mean arterial pressure.Timepoint: On the morning of surgery—

Secondary

MeasureTime frame
Association between maximum diameter of SCV & post induction hypotension. Timepoint: Within the first 15 minutes of induction of General Anaesthesia;Association between minimum diameter of SCV & post induction hypotension. Timepoint: Within the first 15 minutes of induction of General Anaesthesia;Association of certain patient characteristics & hemodynamic variables & the development of post induction hypotension.Timepoint: After induction of General Anaesthesia;Requirement of ephedrine. Timepoint: Within the first 15 minutes of induction of General Anaesthesia;The incidence of post induction hypotensionTimepoint: After Induction of General Anaesthesia—

Countries

India

Contacts

Public ContactAbhishek Ahirwar

Maulana Azad Medical College

drakgk@yahoo.co.in9968604219

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026