Cardell MAX-12 HD - Veterinary Instrumentation

CARDELL® MAX-12HD User’s ManualSECTION 10NIBP MONITORING10.1 General InformationThe MAX-12HD uses oscillometric principles to calculate the systolic,diastolic, and mean arterial pressure (MAP) values. The MAP is calculated asthe lowest cuff pressure that provides the maximum cuff oscillations.Therefore, MAP is the largest signal received and is the most accurate readingusing oscillometric methods. Systolic pressure is calculated as the cuffpressure at which an increase in cuff oscillations is perceived. The diastolicpressure is the cuff pressure when oscillations are no longer decreasing aspressure is released from the cuff. Special veterinary specific algorithmshave been designed to ensure reliable and accurate measurements fromkittens to horses.NOTE: See Appendix 5 for a listing of validation studies on the Cardell®blood pressure and Nellcor pulse oximetry technology.The patient monitor first inflates the cuff to a pressure of around 20mmHghigher than the systolic pressure, then, slowly deflates the cuff. When the cuffpressure is higher than systolic pressure, the artery is blocked and there aresmall amplitude oscillometric waveforms. When the cuff pressure is equal tothe systolic pressure, the oscillometric amplitude increases. With the decreaseof the cuff pressure, the oscillometric amplitude increases. When the cuffpressure reaches a certain value, the oscillometric amplitude reaches amaximum value, then the cuff pressure is mean arterial pressure. It uses thechanges of the oscillometric amplitude under different cuff pressures toidentify mean pressure and calculate the systolic and diastolic pressure.On the NIBP socket mark indicates the signal input part is insulatedand defibrillation protected and patient safety can be ensured. In defibrillationand electrosurgical procedures, the device will not be damaged.M1.0 5-15-0975