A nurse is caring for a client who has a traumatic brain injury (TBI). Which of the following groups should the nurse understand has a higher risk of sustaining a TBI?

A. "The heart and the coronary arteries weaken, leading to poor perfusion and resulting in angina": This statement is inaccurate. While angina can result from poor perfusion to the heart muscle, it is not typically due to weakening of the heart and coronary arteries. Angina often occurs due to coronary artery narrowing or blockage, leading to reduced blood flow and oxygen delivery to the myocardium.

B. "Coronary arteries become more elastic causing the arteries to stretch as individuals age causing the heart not to receive enough oxygen": This statement is incorrect. Coronary arteries do not become more elastic with age; in fact, they tend to become less elastic due to the development of atherosclerosis, which leads to arterial stiffening and decreased compliance. Atherosclerosis can cause narrowing or occlusion of the coronary arteries, resulting in reduced oxygen delivery to the heart muscle.

C. "Coronary arteries decrease in diameter leading to insufficient blood, oxygen, and nutrients reaching the heart muscle. Manifestations occur due to dilation of coronary arteries with increased blood flow causing increased pressure": This statement is partially incorrect. While it accurately describes the consequences of coronary artery narrowing (decrease in diameter) leading to insufficient blood, oxygen, and nutrient delivery to the heart muscle, the second part of the statement regarding dilation of coronary arteries with increased blood flow causing increased pressure is inaccurate. Coronary artery dilation is a compensatory response to increased demand for oxygen, aiming to improve blood flow to the myocardium. However, dilation alone does not increase pressure in the coronary arteries.

D. "Coronary arteries decrease in diameter leading to insufficient blood, oxygen, and nutrients reaching the heart muscle": This statement is accurate. Coronary artery disease (CAD) involves the progressive narrowing of the coronary arteries due to atherosclerosis, which reduces blood flow to the myocardium. As the arteries narrow, there is insufficient blood, oxygen, and nutrients reaching the heart muscle, leading to manifestations such as angina, myocardial ischemia, and potentially myocardial infarction.

A. Persistent headache and aggression: While persistent headache and aggression can occur following a traumatic brain injury (TBI), these symptoms are not specific to mild TBI. Aggression is more commonly associated with severe TBI, and persistent headache can occur across the spectrum of TBI severity.

B. Headache and confusion: Headache and confusion are common manifestations of mild TBI. Following a mild TBI, individuals often experience headache, which may be mild to moderate in intensity. Confusion, disorientation, and difficulty concentrating are also typical symptoms of mild TBI due to the transient disruption of cognitive function.

C. Loss of vision and depression: Loss of vision and depression are less commonly associated with mild TBI. These manifestations may occur in more severe cases of TBI or with specific types of brain injury affecting visual pathways. However, they are not typically indicative of mild TBI.

D. Seizures and extremity weakness: Seizures and extremity weakness are more indicative of moderate to severe TBI rather than mild TBI. While mild TBI may result in brief loss of consciousness, seizures and significant extremity weakness are less characteristic of mild TBI and are more commonly observed with more severe brain injuries.