All are true about bupivacaine Except
Less cardiotoxic than lignocaine
Dose increases with adrenaline
Long acting
Cannot given m vein
Bupivacaine is more prone to prolong QTc interval and induce ventricular tachycardia or cardiac depression - should not be used for IV regional anesthesia. Whereas Lignocaine cause arrhythmia in overdosage only. All other statements are true. From Tripati 7th edition Page no 366, 367
Anesthesia