Blood pressure is difficult to measure in a patient with-
High-Yield Explanation
Ans. is 'd' i.e.. Atrial fibrillation o Since patients of atrial fibrillation have an irregularly irregidar pulse the routine oscillo-metric de\>ices would falter on BP measurement and hence the N.I.C.E. (British HTN guidelines) advise the auscultatory> method only.