A client is hospitalized for observation after suffering heat exhaustion during a marathon race. He complains of dizziness when he stands up, and the RN determines that he has postural hypotension. Based on the information, which of the following electrolyte imbalances could cause the client's symptoms?

Choice A reason: Identification is a defense mechanism where the person adopts the characteristics or behaviors of someone else, usually someone more powerful or successful, to cope with feelings of inadequacy or insecurity.

Choice B reason: Denial is a defense mechanism where the person refuses to accept or acknowledge the reality of a situation or a problem, to avoid dealing with the negative emotions or consequences.

Choice C reason: Displacement is a defense mechanism where the person transfers their feelings or impulses from the original source to a less threatening or more acceptable one, to reduce the anxiety or guilt.

Choice D reason: Rationalization is a defense mechanism where the person uses logical or plausible explanations to justify or excuse their actions or behaviors, to avoid facing the true motives or reasons.

Choice A reason: Environmental stress is not the correct answer. Environmental stress is caused by external factors that are beyond the person's control, such as noise, pollution, weather, or natural disasters. These factors can affect the person's physical and mental health, but they are not related to the person's specific situation or event.

Choice B reason: Situational stress is the correct answer. Situational stress is caused by a particular situation or event that the person faces, such as a test, a job interview, a conflict, or a loss. These situations or events can create pressure, uncertainty, or anxiety for the person, and they may require the person to adapt or cope with the change or challenge.

Choice C reason: Daily Hassle stress is not the correct answer. Daily Hassle stress is caused by the minor annoyances or frustrations that the person encounters in their everyday life, such as traffic, deadlines, bills, or household chores. These hassles can accumulate and affect the person's mood, health, or well-being, but they are not related to the person's specific situation or event.

Choice D reason: Episodic stress is not the correct answer. Episodic stress is caused by frequent or chronic exposure to stressful situations or events, such as work overload, financial problems, or family issues. These situations or events can create a constant state of worry, agitation, or distress for the person, and they may affect the person's physical and mental health. Episodic stress is not a type of stress, but rather a result of experiencing too much stress over a long period of time.