Which of the following is NOT a possible cause of an increased temperature pre dialysis?

An increased temperature prior to dialysis can indicate various underlying issues that may affect a patient's health. Among the options presented, fluid overload typically does not directly cause an increased temperature. Fluid overload signifies an excess of fluid in the body, which may lead to complications such as hypertension or edema, but it does not typically result in a fever or elevated body temperature.

On the other hand, the other choices represent scenarios that can indeed lead to an increased temperature. A cold, characterized by symptoms of an upper respiratory infection, can cause the body to react with an elevated temperature as part of the immune response. Similarly, an access infection is a significant concern in dialysis patients and can result in fever as the body attempts to fight off the infection. Drinking hot coffee, while unlikely to cause a lasting increase in body temperature, can temporarily raise body temperature due to the hot beverage's immediate thermal effect.

Understanding the pathophysiology and the context of each situation can aid in recognizing the most plausible causes of temperature changes in dialysis patients.