Low dose Ropivacaine gives similar anesthesia to higher dose, with lesser phrenic nerve involvement in Superior Trunk Brachial Plexus block done for upper arm or shoulder surgeries

Comparative evaluation of quantitative phrenic nerve involvement after superior trunk brachial plexus block Block using low and high volume ropivacaine in patients undergoing upper arm surgeries: A randomized clinical trial. - NIL

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2025/11/096800

Enrollment

Registered

2025-11-03

Start date

Unknown

Completion date

Unknown

Last updated

2025-11-17

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

Conditions

Health Condition 1: S422- Fracture of upper end of humerus Health Condition 2: M759- Shoulder lesion, unspecified

Interventions

Intervention1: Superior Trunk Brachial plexus block.: Superior Trunk Brachial Plexus Block will be given using 10ml of 0.75% Ropivacine. Control Intervention1: Superior Trunk Brachial Plexus Block: Su

Eligibility

Inclusion criteria

Inclusion criteria: 1. ASA Physical Status I and II 2. Patients scheduled for elective shoulder or upper arm surgery 3.Duration of surgery less than 180min.

Exclusion criteria

Exclusion criteria: Patients with pre existing pulmonary disease. Patients with pre existing neurological deficits in the upper limbs Any contraindication for giving block. Body Mass Index more than 35 kg per square meter

Design outcomes

Primary

Measure	Time frame
To assess and compare the degree of phrenic nerve involvement between the two groups by measuring diaphragmatic excursion using Ultrasonography. Timepoint: Before the block is given. 30 minutes after the block.	—

Secondary

Measure	Time frame
To assess and compare the onset of block. To assess and compare the duration of block. To assess and compare the bedside pulmonary functions between the two groups before and after the block using bed side pulmonary function test machine. To assess and compare any complications between the two groups. Timepoint: Before block is given, then until 180 minutes, with the interval of 10 to 15 minutes each.	—

Measure

Time frame

To assess and compare the onset of block. To assess and compare the duration of block. To assess and compare the bedside pulmonary functions between the two groups before and after the block using bed side pulmonary function test machine. To assess and compare any complications between the two groups. Timepoint: Before block is given, then until 180 minutes, with the interval of 10 to 15 minutes each.

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Countries

India

Contacts

Public ContactRishabh Awasthi

Uttar Pradesh University of Medical Sciences, SAIFAI

drurvikgmu@gmail.com7500186161

Outcome results

None listed

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