P wave is absent: (A) Atrial fibrillation, (B) CCF, (C) Atrial flutter, (D) PSVT
Answer is A. Ans. (a) Atrial fibrillationRef: Ganong, 25th ed/p.524P wave is absent in atrial fibrillationInstead of p waves, only fibrillatory f waves are seenP wave is absent also in hyperkalemia