Which of the following lab values would be most important to monitor during the fluid resuscitation phase? (Select All that Apply.)

Rationale: A. Blood glucose is not a priority lab during the fluid resuscitation phase unless the patient has diabetes or a hyperglycemic emergency. While it may be monitored routinely, it does not directly guide fluid resuscitation effectiveness or immediate hemodynamic stability. B. Potassium is critically important to monitor because fluid resuscitation can cause rapid shifts in potassium levels. Dilution, improved renal perfusion, and intracellular shifts may lead to hypokalemia, which can cause life-threatening cardiac dysrhythmias. C. Lactate is an essential marker of tissue perfusion and oxygenation. Elevated lactate indicates anaerobic metabolism due to hypoperfusion, and decreasing levels suggest effective fluid resuscitation and improved tissue oxygenation. D. Troponin is a cardiac-specific marker used to diagnose myocardial injury. It is not routinely monitored during fluid resuscitation unless there is concern for acute coronary syndrome or cardiac ischemia. E. Hematocrit is important to monitor because fluid resuscitation can cause hemodilution, and changes may reflect blood loss, plasma volume expansion, or ongoing hemorrhage. Monitoring hematocrit helps assess the adequacy of resuscitation and guides further treatment decisions.