Final answer:
The client undergoing hemodialysis showing signs of dizziness and a rapid heart rate with low blood pressure may have hypovolemic shock. The nurse should first assess for hemorrhaging or fluid loss and prepare to administer IV fluids and medications to raise blood pressure.
Step-by-step explanation:
The male client undergoing hemodialysis who complains of dizziness with a heart rate of 128 beats/minute and a blood pressure of 90/60 may be experiencing symptoms of circulatory shock, likely hypovolemic shock. This is a life-threatening condition where there is insufficient blood flow to supply oxygen and nutrients to tissues, often with symptoms of rapid heart rate, low blood pressure, cool and clammy skin, rapid breathing, and confusion. The nurse's first intervention should be to assess the situation further by checking for any signs of possible hemorrhaging or fluid loss and preparing to administer fluids intravenously to counteract the decrease in blood volume. Drugs like dopamine, epinephrine, and norepinephrine may also be used to raise the patient's blood pressure.