Trauma Nurse Core Course (TNCC) Practice Exam

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Which type of shock is associated with decreased blood volume?

Cardiogenic shock
Neurogenic shock
Hypovolemic shock
Obstructive shock

The correct answer is: Hypovolemic shock

Hypovolemic shock is characterized by a significant decrease in blood volume, leading to inadequate circulation and oxygen delivery to the body’s tissues. This type of shock can occur as a result of various factors, such as traumatic injury, severe dehydration, or blood loss from conditions like gastrointestinal bleeding. The reduction in blood volume compresses the amount of blood available to fill the heart and circulate through the vascular system, ultimately resulting in decreased perfusion and potential organ failure if not promptly addressed. Understanding hypovolemic shock is crucial for trauma nurses, as it drives the urgency for interventions like fluid resuscitation and rapid assessment to identify the source of fluid loss. This type of shock is fundamentally different from the other choices, which involve issues like heart function, neural control of blood vessels, or physical obstruction of blood flow, rather than direct loss of volume within the circulatory system.