The nurse is preparing to administer a unit of packed red blood cells (PRBC's) to a patient whose blood type is A- (negative). The nurse knows that this patient can receive transfusions from which blood types? (SELECT ALL THAT APPLY).

A) Respiratory acidosis:
Respiratory acidosis occurs when there is an accumulation of carbon dioxide (CO2) in the blood, leading to a decrease in pH. In the given blood gas values, the PaCO2 is 28 mmHg, which is lower than the normal range (35-45 mmHg), indicating that CO2 is being exhaled more than usual, not accumulating.

B) Metabolic acidosis:
Metabolic acidosis results from a decrease in bicarbonate (HCO3-) or an increase in acid in the body. However, in the provided values, the bicarbonate (HCO3-) is normal at 24 mEq/L, and the pH is elevated at 7.51, indicating alkalosis rather than acidosis

C) Metabolic alkalosis:
Metabolic alkalosis occurs when there is an increase in bicarbonate levels or excessive loss of acids, often associated with vomiting or diuretic use. However, in this case, the bicarbonate level (HCO3-) is normal, and the pH is more consistent with alkalosis due to respiratory factors, not metabolic causes.

D) Respiratory alkalosis:
Respiratory alkalosis occurs when there is excessive exhalation of CO2, leading to a rise in blood pH (alkalosis). The pH is 7.51, which is above the normal range (7.35-7.45), indicating alkalosis. Additionally, the PaCO2 is low at 28 mmHg, which suggests that the client is hyperventilating and exhaling too much CO2, confirming respiratory alkalosis as the correct interpretation.

A) Urine output of 0.5-1 mL/kg/hr:
This is a positive outcome during fluid resuscitation for burn patients. Adequate urine output is a key indicator of proper renal perfusion and fluid balance. A urine output of 0.5-1 mL/kg/hr is considered optimal for burn patients during the first 24-48 hours of resuscitation. It suggests that the kidneys are receiving sufficient blood flow and that the patient is responding appropriately to the fluids being administered.

B) Serum sodium level 149 mEq/L (normal 135-145):
A serum sodium level of 149 mEq/L is high and indicates hypernatremia, which is a common complication of excessive fluid resuscitation, particularly with the use of crystalloids. Hypernatremia can lead to cerebral edema, altered mental status, and other severe complications. Therefore, this finding would suggest improper fluid management and would not be considered a positive outcome.

C) Blood pressure 82/54:
A blood pressure of 82/54 is hypotensive, which is concerning in a burn patient. Hypotension indicates inadequate tissue perfusion, potentially leading to shock and organ failure. While low blood pressure may occur in the initial stages of resuscitation due to the rapid shifts in fluid, a sustained low blood pressure is not a positive outcome.

D) Heart rate 124 beats per minute:
A heart rate of 124 beats per minute is tachycardic and suggests that the patient is compensating for hypovolemia or inadequate circulatory volume, possibly due to insufficient fluid resuscitation. Although an elevated heart rate may occur as a compensatory mechanism in the initial stages of burn resuscitation, sustained tachycardia indicates ongoing volume depletion or inadequate perfusion and is not an ideal outcome.