<prompt> Blood pressure is difficult to measure in a patient with-Mitral stenosisAortic stenosisComplete heart blockAtrial fibrillation  <response>: Ans. is d i.e.. Atrial fibrillation o Since patients of atrial fibrillation have an irregularly irregidar pulse the routine oscillo-metric deices would falter on BP measurement and hence the N.I.C.E. British HTN guidelines advise the auscultatory method only. 