The oscillometric method of determining arterial blood pressure does not require a transducer under the occluding cuff and is the most common method used. This method detects volume displacements that originate within the artery (as cuff pressure is reduced) and that are sensed as pressure oscillations in the occluding cuff. The point of maximal oscillation corresponds to the MAP. Systolic and diastolic pressures may be determined by special measurement techniques or clinically tested algorithms. This method may be more reliable than auscultation on hypotensive patients and patients who are likely to become hypotensive.