Fluid of choice for treatment of Hypovolemic shock in a Burnt Patient is?

NCL (MP) Nursing Officer - 2020

Medical & Surgical Nursing

Easy

Appeared in: NCL (MP) Nursing Officer - 2020

Explanation

Ringer's Lactate (LR) is the crystalloid fluid of choice for initial resuscitation in patients with hypovolemic shock from severe burns.
It is a balanced isotonic solution with an electrolyte composition that closely resembles human plasma, making it effective for restoring intravascular volume.
The lactate in the solution is metabolized by the liver into bicarbonate, which helps to buffer the metabolic acidosis that commonly occurs in burn shock.
Using LR minimizes the risk of hyperchloremic metabolic acidosis, a potential complication when large volumes of Normal Saline are administered.

Option A: While Normal Saline is an isotonic crystalloid, it is not the first choice for large-volume resuscitation in burn patients. Its high chloride concentration (154 mEq/L) compared to plasma can lead to hyperchloremic metabolic acidosis.
Option C: DNS contains dextrose (glucose), which is not indicated for initial fluid resuscitation in burn shock. The stress response to burns already causes hyperglycemia, and adding dextrose can worsen it, leading to osmotic diuresis and further fluid shifts.
Option D: GNS, like DNS, contains glucose. It is not a resuscitation fluid for the same reasons: it can exacerbate hyperglycemia and is not effective for rapidly expanding the intravascular volume in a shock state.

Clinical Relevance

Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Fluid Resuscitation in Burn Shock in acute care settings.
Accurate fluid resuscitation is a cornerstone of burn management. Nurses are responsible for calculating fluid needs (often using the Parkland formula), administering fluids, and, most importantly, titrating the infusion rate based on the patient's physiological response, primarily urine output.
Failure to provide adequate fluids (under-resuscitation) can lead to kidney failure and worsening shock. Conversely, excessive fluid (over-resuscitation) can cause life-threatening complications like pulmonary edema and abdominal compartment syndrome.
What if? If the burn patient had pre-existing severe liver failure, the choice of Ringer's Lactate would be questioned. The failing liver cannot effectively metabolize lactate to bicarbonate, potentially leading to lactic acidosis. In this specific case, a different balanced crystalloid (like Plasma-Lyte) or cautious use of Normal Saline would be considered.

How to Approach the Question

First, identify the key elements of the question: the patient condition is 'Hypovolemic shock' in a 'Burnt Patient', and the question asks for the 'Fluid of choice'.
Recall the pathophysiology of major burns: massive fluid loss from the vascular space into the surrounding tissue, leading to hypovolemia and potential metabolic acidosis.
Evaluate the options based on their suitability for large-volume resuscitation. The primary goal is to replace lost intravascular volume with a fluid that is physiologically similar to plasma.
Compare the two main isotonic crystalloids: Normal Saline and Ringer's Lactate. Remember that LR is a 'balanced' solution that helps buffer acidosis, making it superior for burn resuscitation.
Eliminate the dextrose-containing solutions (DNS, GNS) as they are not used for initial volume replacement and can worsen the hyperglycemia associated with the stress of a burn injury.
Conclude that Ringer's Lactate is the most appropriate choice because it effectively restores volume while minimizing the risk of iatrogenic acidosis.

Concept Tested & Keywords

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