Patient blood sugar is 40 mg/dl. Immediate management is to administer?

WCL Staff Nurse - 2019

Medical & Surgical Nursing

Easy

Appeared in: WCL Staff Nurse - 2019

Explanation

A blood glucose level of 40 mg/dL signifies severe hypoglycemia, a medical emergency that can lead to seizures, coma, and brain damage if not treated promptly.
The immediate priority is to rapidly increase the blood glucose level.
50% Dextrose (D50W) is a hypertonic solution that provides a large, concentrated dose of glucose (25 grams in 50 mL).
This makes it the most effective and rapid intervention for correcting severe hypoglycemia in an adult patient with intravenous access.

Option A: 5% Dextrose is a hypotonic solution and is too dilute to raise blood sugar levels quickly enough in an emergency. A large volume would be needed, delaying effective treatment.
Option C: Administering insulin would further lower the patient's already dangerously low blood sugar. This is absolutely contraindicated and would be life-threatening.
Option D: Normal saline is an isotonic crystalloid solution that contains only sodium chloride and water. It has no glucose and therefore will not have any effect on raising the patient's blood sugar.

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.
Nurses must be able to rapidly identify the signs and symptoms of severe hypoglycemia (e.g., altered mental status, diaphoresis, tachycardia, seizures) and initiate emergency treatment immediately to prevent irreversible neurological injury.
The '15-15 Rule' (give 15 grams of fast-acting carbs, wait 15 minutes, then recheck blood glucose) is appropriate for conscious patients who can swallow. For unconscious patients or those unable to take anything orally, parenteral treatment (IV Dextrose or IM Glucagon) is required.
What if? If the patient with severe hypoglycemia did not have IV access, the correct immediate action would be to administer 1 mg of Glucagon intramuscularly (IM) while another team member works to establish IV access.

How to Approach the Question

First, identify the critical clinical value presented in the question: a blood sugar of 40 mg/dL.
Recognize that this value represents a severe, life-threatening medical condition (hypoglycemia).
The question asks for 'immediate management,' which implies the need for the fastest and most effective intervention.
Analyze each option based on its physiological effect on blood glucose. The goal is to rapidly INCREASE blood glucose.
Eliminate options that would worsen the condition (insulin) or have no effect (normal saline).
Between the two dextrose options, choose the most concentrated solution (50%) for emergency correction, as the less concentrated solution (5%) is for maintenance, not rapid rescue.

Concept Tested & Keywords

Concept Tested: The immediate management of severe hypoglycemia in a clinical setting.
Stem keywords: blood sugar, 40 mg/dl, Immediate management
Lead-in keywords: administer
Clinical cues: A blood sugar of 40 mg/dL is a critical value indicating severe hypoglycemia, which is a life-threatening medical emergency.

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E6 Medicine Davidson Principles Practice 24e pp. 761-763, 757-759

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 568-570