The nurse is providing care for four patients: Patient A, diagnosed with emphysema and has an oxygen saturation of 94% on room air; Patient B, who is postoperative with a hemoglobin level of 8.2 mg/dL (82 g/L); Patient C, newly admitted with a potassium level of 3.8 mEq/L (3.8 mmol/L); and Patient D, who is scheduled for an appendectomy and has a white blood cell (WBC) count of 14,000 mm² (14 x 10°/L). What action should the nurse take next?

Choice A rationale

The administration of crystalloid fluids in the first 24 hours following a burn incident promotes fluid resuscitation due to capillary leaking. In the aftermath of a burn, there is a disruption of the normal fluid balance in the body, leading to increased capillary permeability and fluid shifts. This can result in a condition known as burn shock, characterized by decreased blood volume and inadequate tissue perfusion. The administration of crystalloid fluids helps to restore intravascular volume, improve tissue perfusion, and prevent burn shock. It also minimizes burn wound conversion and reduces the incidences of post-burn renal failure, life-threatening electrolyte disturbances, and mortality.

Choice B rationale

While restoration of electrolyte balance is an important aspect of burn management, it is not the primary physiological response promoted by the administration of crystalloid fluids in the immediate aftermath of a burn. Electrolyte imbalances in burn patients are usually a result of the systemic inflammatory response, fluid shifts, and renal dysfunction that can occur after a burn. These imbalances are typically managed through careful monitoring and specific electrolyte replacement therapies, rather than through the initial administration of crystalloid fluids.

Choice C rationale

Replacement of insensible water loss is another important aspect of burn management, but it is not the primary physiological response promoted by the administration of crystalloid fluids in the immediate aftermath of a burn. Insensible water loss occurs through evaporation from the burn wound surface and can be significant in burn patients. However, this is typically managed through the maintenance of a humidified environment and specific fluid replacement strategies, rather than through the initial administration of crystalloid fluids.

Choice D rationale

Extension of plasma until blood is available is not the primary physiological response promoted by the administration of crystalloid fluids in the immediate aftermath of a burn. While blood products may be required in the management of severe burns, particularly if there is significant blood loss or hemodynamic instability, the initial focus of fluid resuscitation in burn patients is on the administration of crystalloid solutions to restore intravascular volume and improve tissue perfusion.

Choice A rationale

Noting the presence of an auscultatory gap, which is a period of abnormal silence in Korotkoff sounds during blood pressure measurement, is important. However, in this case, the silence followed by a Korotkoff sound is a normal finding and does not indicate an auscultatory gap.

Choice B rationale

After inflating a blood pressure cuff and releasing the valve, the nurse hears silence followed by a Korotkoff sound. This is a normal finding and indicates that the nurse should continue with the blood pressure assessment.

Choice C rationale

Re-inflating the cuff to a higher number is not necessary in this case as the initial silence followed by a Korotkoff sound is a normal finding.

Choice D rationale

Repositioning the stethoscope over the brachial artery may not resolve the issue of hearing silence followed by a Korotkoff sound. It is important to assess the situation further before making adjustments.