What is the immediate management for a patient with 40 mg/dL Random Blood Sugar (RBS)?

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2015

Explanation

A blood glucose level of 40 mg/dL is defined as severe hypoglycemia, which requires immediate treatment to prevent brain damage.
25% Dextrose is a hypertonic intravenous solution that provides a concentrated, rapid-acting source of glucose.
Administering a bolus of a hypertonic dextrose solution is the standard of care for unconscious patients or those unable to take oral glucose safely.
This intervention directly and quickly elevates the blood glucose concentration to a safe level.

Option A: 5% Dextrose is an isotonic solution and is too dilute to effectively raise blood glucose in a severe hypoglycemic emergency. It is used as a maintenance fluid, not for rapid correction.
Option C: 5% Dextrose in Normal Saline (DNS) is also a maintenance fluid. It is not concentrated enough for the rapid bolus correction needed in severe hypoglycemia.
Option D: Ringer Lactate is an electrolyte solution that contains no glucose. It is used for fluid resuscitation but is completely ineffective for treating hypoglycemia.

Clinical Relevance

Nursing practice connection: Use the key finding related to The immediate management of severe hypoglycemia in a clinical setting to guide bedside assessment, documentation, and the next nursing action.
Recognizing and treating severe hypoglycemia promptly is a critical nursing skill to prevent irreversible neurological damage, seizures, or coma.
Nurses must be able to quickly assess the patient's level of consciousness to determine the correct route of administration (oral vs. IV).
After administering IV dextrose, the nurse must recheck the blood glucose level within 15 minutes to ensure the intervention was effective and continue monitoring closely.

How to Approach the Question

First, identify the critical lab value: Random Blood Sugar (RBS) of 40 mg/dL.
Recognize that this value represents severe hypoglycemia, a medical emergency.
The question asks for 'immediate management', implying an urgent, rapid-acting intervention is needed.
Evaluate the options based on their composition and purpose. The goal is to deliver glucose quickly.
Eliminate options that do not contain glucose (Ringer Lactate) or are too dilute for emergency use (5% Dextrose, 5% DNS).
Select the most concentrated glucose solution available for rapid IV administration, which is 25% Dextrose.

Concept Tested & Keywords

Concept Tested: The immediate management of severe hypoglycemia in a clinical setting.
Stem keywords: immediate management, 40 mg/dL, Random Blood Sugar, RBS
Lead-in keywords: What is
Clinical cues: RBS of 40 mg/dL indicates a medical emergency (severe hypoglycemia).

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E6 Medicine Davidson Principles Practice 24e p. 761-763

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 1027-1029

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