Nil
Conditions
Interventions
Two groups:Ultrasound guided brachial plexus block through either the axillary or supraclavicular route 30 minutes
Sponsors
Nil
Eligibility
Sex/Gender
Male
Age
19 Years to 65 Years
Inclusion criteria
Inclusion criteria: 28 consenting adult patients, ASA ?-II, undergoing forearm or hand surgery at the Prince of Wales Hospital will be recruited
Exclusion criteria
Exclusion criteria: Patient refusal, ASA physical status>III, hypertension, cardiac disease, autonomic dysfunction, diabetes mellitus, nerve injury or neuropathy disorders, connective tissue disorders, diagnosed peripheral vascular disease, status of coagulation or anticoagulation, skin infection at the site of needle insertion, a contraindication to regional anaesthesia, the presence of an arteriovenous fistula in the arm, sepsis, and pregnancy.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Haemodynamic parameters (PSV, EDV, ratio of PSV and EDV (S/D), Vmean, TAVM, RI and PI) and diameter measurement will be performed in brachial artery and common palmar digital artery before the brachial plexus block, and repeated at regular intervals for 30 minutes, (5min, 10min, 20min, and 30mins) after the ultrasound guided BPB.;At the same time intervals, heart rate and blood pressure will be also recorded.;Skin temperature in the palmar aspect of both thumbs will be also recorded at the same time intervals.;Core temperature will be also recorded at 30 min after the BPB to determine if there are any changes in core temperature during the study period.; | — |
Secondary
| Measure | Time frame |
|---|---|
| Success of the block will be defined as abolition of sensation to cold (ice) and paralysis of the muscles in the ipsilateral hand and forearm and will be assessed at the same time intervals as the haemodynamic measurements after the brachial plexus block.; | — |
Countries
China
Contacts
Public ContactManoj K Karmakar
Outcome results
None listed