<prompt> Drugs implicated in development of heart block include which of the following?Beta blockersLithiumAdenosineAll the above  <response>: Ans. is d i.e., All the above From the following table it is clear that all the given drugs are implicated in the development of Atrioventricular heart block.Drugs causing AV blockBeta blockers AdnosineClacium channel blockers Antiarrhythmics class I and IIIDigitalis Lithium 