RANDOMISED COMPARATIVE STUDY OF SUCCESSFUL CANNULATION OF RADIAL ARTERY USING BLIND PALPATION TECHNIQUE AND ULTRASOUND GUIDED TECHNIQUE

Ramya Nagaraju, Bhavani. M

Abstract


BACKGROUND
The insertion of radial artery cannula for continuous blood pressure measurement and blood sampling is very much
necessary in cardiothoracic surgeries. The radial artery cannula is usually inserted by using blind palpation technique. However, the insertion of
the radial artery cannula can sometimes be difcult, requiring multiple attempts which can cause patient discomfort and suffering. The technique
of performing radial artery cannulation using ultrasound guidance is increasing in popularity. We compared the successful cannulation of radial
artery by blind palpation technique and ultrasound guided technique.
MATERIALS AND METHODS
This study was done as a randomized controlled trial among 80 subjects posted for elective cardiothoracic surgeries of which 40 subjects were
put in group P(blind palpation technique) and 40 subjects in group U (ultrasound guided technique).
After ethical committee approval, patients satisfying inclusion criteria and Allen's test, patients randomized by computer generated table. Radial
artery cannulation done under complete aseptic precautions with wrist immobilized in dorsiexed supine position supported by bundle of gauze
using blind palpation or ultrasound guided technique. First pass success rate, time taken to cannulate, total number of attempts and complications
were noted till the time of decannulation.
RESULTS
The rst pass success rate was found to be statistically signicant in between both the groups .Time taken to cannulate was signicantly shorter
in Group U when compared to Group P. The number of attempts were found lesser in Group U when compared to Group P. There was no
signicant difference in complications in between both the groups.
CONCLUSION
Ultrasound guided technique for radial artery cannulation is associated with higher rate of successful cannulation and lesser time required for
arterial line insertion as compared to blind palpation method.


Keywords


Elective cardiothoracic surgeries, blind palpation technique, ultrasound guided technique, rst pass success rate, time taken to cannulate, total number of attempts and complications.

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