A study comparing two types of nerve blocks namely superior trunk block and interscalene block to see which one causes less breathing muscle weakness in patients undergoing arm(humerus) surgery

Comparison of the incidence of Hemidiaphragmatic paresis following ultrasound-guided superior trunk block and interscalene block for elective humerus surgeries- a randomised controlled study. - NIL

Status

Active, not recruiting

Phases

Phase 1Phase 2

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2025/08/093884

Enrollment

Registered

2025-08-29

Start date

Unknown

Completion date

Unknown

Last updated

2025-09-15

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

Conditions

Health Condition 1: S423- Fracture of shaft of humerus

Interventions

Intervention1: Not applicable: Not Applicable Control Intervention1: Ultrasound guided Interscalene Block using 0.75% ROPIVACAINE 15ml: Patients undergoing elective humerus surgeries will be divided i

Eligibility

Inclusion criteria

Inclusion criteria: 1.American Society of Anaesthesiologists (ASA) Grade I & II patients, of both sexes. 2.Patients undergoing elective upper limb surgeries. 3.Patients in the age group of 18-60 years.

Exclusion criteria

Exclusion criteria: 1. Known allergy to local anaesthetic 2. Patients with respiratory system compromised Patients with psychiatric disorders/seizure disorders 3.Patient refusal to participate in the study

Design outcomes

Primary

Measure	Time frame
To compare incidence of hemidiaphragmatic paresis following superior trunk and interscalene block in patients undergoing humerus surgeries.Timepoint: Post operative 30 mins	—

Secondary

Measure	Time frame
1.To assess the time required to achieve sensory blockade and motor blockade following superior trunk block and interscalene block in patients undergoing humerus surgeries. 2.To assess the duration of analgesia following superior trunk block and interscalene block in patients undergoing humerus surgeries. 3.To access respiratory function- Peak Expiratory Flow Rate (PEFR) using spirometer pre block and post block.Timepoint: Post operative 24 hours	—

Measure

Time frame

1.To assess the time required to achieve sensory blockade and motor blockade following superior trunk block and interscalene block in patients undergoing humerus surgeries. 2.To assess the duration of analgesia following superior trunk block and interscalene block in patients undergoing humerus surgeries. 3.To access respiratory function- Peak Expiratory Flow Rate (PEFR) using spirometer pre block and post block.Timepoint: Post operative 24 hours

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Countries

India

Contacts

Public ContactDr Srushti Bari

Bharati Vidyapeeth Deemed to be University

kalyanish19@gmail.com9673400066

Outcome results

None listed

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