A nurse is caring for a client who has a subarachnoid hemorrhage and asks why they are having a CT angiography. Which of the following should the nurse understand about CT angiography?

A. Hypovolemic shock: Hypovolemic shock occurs due to a significant decrease in circulating blood volume, leading to inadequate tissue perfusion. Blood loss, such as that experienced by the client in the scenario, is a common cause of hypovolemic shock. The decrease in blood pressure observed over time is consistent with the compensatory mechanisms of hypovolemic shock, where the body attempts to maintain perfusion to vital organs despite decreased blood volume.

B. Septic shock: Septic shock results from a systemic inflammatory response to infection, leading to vasodilation, increased capillary permeability, and maldistribution of blood flow. While infection can lead to hypovolemia in some cases, the scenario does not provide evidence of infection or systemic inflammatory response as the cause of shock.

C. Obstructive shock: Obstructive shock occurs when there is obstruction to blood flow within the cardiovascular system, such as in cases of pulmonary embolism, cardiac tamponade, or tension pneumothorax. There is no evidence in the scenario to suggest an obstruction to blood flow as the cause of the client's shock.

D. Neurogenic shock: Neurogenic shock results from loss of sympathetic tone leading to vasodilation and relative hypovolemia. It is often associated with spinal cord injury or severe head injury. While neurogenic shock can lead to hypotension, the scenario does not indicate any neurological injury or insult as the cause of the client's shock.

A. Basketball, office jobs, and listening to loud music: These activities are not typically associated with an increased risk of chronic traumatic encephalopathy (CTE). While some recreational and occupational activities may involve physical or environmental risks, they are not commonly linked to the repetitive head trauma seen in CTE.

B. Swimming, working as a nurse, and painting: These activities are not commonly associated with an increased risk of CTE. Swimming is generally a low-risk activity for head injuries, while working as a nurse and painting are not typically associated with repetitive head trauma.

C. Football, military service, and physical abuse: This is the correct answer. Chronic traumatic encephalopathy (CTE) is strongly associated with repetitive head trauma, particularly in contact sports like football, as well as in military service where blast injuries and combat-related head trauma are common. Physical abuse, especially in contact sports, can also increase the risk of CTE due to repetitive blows to the head.

D. Golfing, working in construction, and horse roping: While some occupational and recreational activities may involve a risk of head injury, they are not commonly associated with the repetitive head trauma seen in CTE. Golfing, construction work, and horse roping typically do not involve the level of repetitive head impacts seen in activities like football or military service.