<prompt> Which of the following statements is WRONG about amiodarone?It is longest acting anti-arrhythmic drug.It has positive ionotropic actionIt contains iodineIt causes pulmonary fibrosis.  <response>: Amiodarone is an iodine containing highly lipophilic longest-actingT12 3 wks antiarrhythmic drug exes multiple actions: Prolongs APD and Q-T interval attributable to block of myocardial delayed rectifier K channels. This also appears to reduce nonuniformity of refractoriness among different fibres. Na channel blocker b- Blocker action Ca2 channel blocker Adverse effects: - Hypohyper thyroid Peripheral neuropathy Myocardial depression Pulmonary fibrosis Liver toxicity Corneal deposits Photosensitivity 