Question

Which of following is defined as shock?

A. A mean arterial pressure of less than 80 mm Hg
B. Organ hypoperfusion and a decrease in oxygen delivery to tissues.
C. A CVP of less than 5 mm Hg and SPO2 of less than 90%
D. A reduction in heart rate less than 60 beats/min and a reduction in CVP less than 5mm Hg.

Answer 1

Shock is a state where the circulatory system cannot maintain adequate blood flow, leading to organ hypoperfusion and tissue hypoxia, most fittingly represented by option B: Organ hypoperfusion and a decrease in oxygen delivery to tissues.

Step-by-step explanation:

Shock is defined as a life-threatening medical condition where the circulatory system fails to supply enough blood flow to provide adequate oxygen and other nutrients to tissues, necessary for maintaining cellular metabolism. This results in organ hypoperfusion and a reduction in oxygen delivery to tissues. Specifically, among the options provided, shock is most accurately described by option B: Organ hypoperfusion and a decrease in oxygen delivery to tissues.

When referring to mean arterial pressure (MAP), a range of 70-110 mm Hg is considered normal, and a value falling below 60 mm Hg for an extended period can lead to shock due to insufficient blood flow and reduced oxygenation of tissues, known as hypoxia. MAP values, heart rate, blood pressure, urine output, and consciousness level help diagnose the presence and type of shock. Different types of shock exist such as hypovolemic, cardiogenic, obstructive, and septic, each with their underlying causes and treatment approaches.