A patient has received an inadvertent overdose of a cholinergic drug

QUESTION

A patient has received an inadvertent overdose of a cholinergic drug. The nurse will monitor for which early signs of
a cholinergic crisis? (Select all that apply.) Dry mouth Abdominal cramps Flushing of the skin Dyspnea Constipation
Salivation

ANSWER

In the event of an inadvertent overdose of a cholinergic drug, it’s crucial for the nurse to monitor the patient closely for early signs of a cholinergic crisis. Cholinergic drugs, which stimulate the parasympathetic nervous system, can lead to an excessive activation of cholinergic receptors. The early signs of a cholinergic crisis include:

1. Salivation: Excessive salivation, also known as hypersalivation, is a hallmark sign of a cholinergic crisis. Cholinergic drugs increase the production and release of acetylcholine, leading to overstimulation of salivary glands and profuse salivation.

2. Abdominal Cramps: Abdominal cramps or colicky abdominal pain can occur due to increased gastrointestinal motility caused by cholinergic drug overdose. This results from the excessive stimulation of smooth muscles in the gastrointestinal tract.

3. Flushing of the Skin: Flushing or redness of the skin is another early sign. Cholinergic stimulation can cause vasodilation, leading to an increase in blood flow to the skin and subsequent flushing.

4. Dyspnea: Dyspnea, or difficulty breathing, can result from bronchoconstriction caused by cholinergic drug overdose. Constriction of the bronchial smooth muscles can lead to reduced airflow and respiratory distress.

5. Dry Mouth: Surprisingly, dry mouth can also occur in a cholinergic crisis. While excessive salivation is common, it may be accompanied by a sensation of dryness in the mouth due to the complex interplay of cholinergic receptors.

6. Constipation: Constipation is typically a late sign of cholinergic crisis and may not manifest early. Initially, cholinergic stimulation leads to increased gastrointestinal motility, causing abdominal cramps and diarrhea. However, prolonged stimulation can result in exhaustion of the gastrointestinal muscles, leading to constipation.

It’s important for the nurse to promptly recognize these early signs and symptoms of a cholinergic crisis and initiate appropriate interventions, such as discontinuing the cholinergic drug, administering antidotes (e.g., atropine), and providing supportive care to alleviate distressing symptoms. Regular monitoring and assessment are essential to prevent the progression of the crisis and ensure the patient’s safety and well-being.