Effectiveness of Ultrasound as a tool for Radial artery cannulation compared to the traditional palpatory technique- A Prospective randomized controlled clinical trial

BLOOD PRESSURE MONITORING HAS BEEN A FUNDAMENTAL CARDIOVASCULAR VITAL SIGN INCLUDED IN THE  STANDARD ASA MONITORING DURING THE PERIOPERATIVE PERIOD AND INTENSIVE CARE UNIT. CONTINUOUS INVASIVE ARTERIAL BLOOD PRESSURE MONITORING SURPASSESS THE NONINVASIE INTERMITTENT BLOOD PRESSURE MONITORING BY ITS ABILITY TO A GIVE A REAL TIME BLOOD PRESSURE MONITORING.ANY ANTICIPATED PHARMACOLOGIC OR MECHANICAL CARDIOVASCULAR MANIPULATION,REQUIREMENT OF FREQUENT BLLOD SAMPLING AND SUPPLEMENT THE DIAGNOSTIC INFROMATION FROM ITS ARTERIAL WAVEFORM. TRADITIONALLY THE CANNULATION HAS BEEN PERFORMED USING ANATOMIC KNOWLEDGE AND PULSE PALPATIONAS A GUIDE TO PLACEMENT.HOWEVER PATIENTS REQUIRING ARTERIAL LINES MAY BE OBESE OR EDEMATOUS OR HAVE FEEBLE PULSESECONDARY TO HYPOTENSION AND ALSO THE CATHETER MAY NOT BE PASSED SUCCESSFULLY  INTO THE ARTERY DESPITE APPARENT GOOD BLOOD RETURN AFTER INITIAL PUNCTRE OR THE ARTERY MAY DEVEOP SPASM. AFTER A FAILED ATTEMPT THUS MAKING BLIND PALPATORY TECHNIQUE A DIFFICULT ONE. THIS STUDY IS AN ATTEMPT TO COMPARE THE TRADITIONAL PALPATORY TECHNIQUE WITH THE USG GUIDED TECHNIQUE IN TERMS OF CANNULATION TIME,THE NUMBER OF ATTEMPTS, CHANGE TO OTHER SITE OR ARTERY OR ALTERNATIVE PROVIDER.