Estimating cardiac output. Utility in the ... | 合法醫療器材資訊網

Formulaforcalculatingcardiacoutput:CO=SV(cm3)×HR(min−1).Calculationofcardiacoutputusingechocardiography.Figure6.Calculationofcardiacoutput ...

Cardiac output (CO) is defined as the volume of blood expelled by the heart in one minute. It can be expressed as follows:

In academic terms, the normal CO range in the healthy adult is about 4–6.5l/min (2.5l/min per m2 body surface would be the corresponding cardiac index), under resting conditions. However, cardiac output, as the main determinant of oxygen transport to the different body regions, must be adapted to the needs of the body at all times; therefore, as a single or isolated piece of information, a value within the “normal” range is unable to indicate whether cardiac function is optimum. Critically ill patients generally have abnormal oxygen demands as a result of the underlying disease-triggering process. Consequently, the cardiac ...