Addition of a vasoconstrictor along with LA causes ?
Ans. is 'c' i.e., Prolongation of duration Vasoconstrictor Remember o Adrenaline is the most commonly used vasoconstrictor. o Felypressin (synthetic vasopressin) is an alternative. It does not affect BP and HR --> preferred in patients with cardivascular disease. - o Vasoconstrictor should not be added for ring block of hands, feet, finger, penis and in pinna --> All these organs are supplied by endaeries.
More systemic toxicity
Fall in BP
Prolongation of duration
Reduced intensity of block