A nurse is assessing a client who is experiencing acute cocaine toxicity. Which of the following findings should the nurse expect?
A.
Hypothermia
B.
Hypotension
C.
Tremors
D.
Respiratory depression
The Correct Answer and Explanation is:
The correct answer is C. Tremors.
Cocaine toxicity, especially in an acute scenario, triggers several physiological changes due to the drug’s stimulant effects on the central nervous system (CNS). Cocaine acts by increasing the levels of dopamine, norepinephrine, and serotonin in the brain, leading to an overactivation of the sympathetic nervous system, also known as the “fight or flight” response. This intense stimulation affects multiple body systems and results in various clinical manifestations.
Explanation of Symptoms:
- Tremors: Tremors are a common finding in acute cocaine toxicity because the CNS is overstimulated. Cocaine increases motor activity by enhancing neurotransmitter activity, particularly dopamine, in brain regions responsible for movement control. This results in involuntary muscle movements, manifesting as tremors, twitching, or muscle rigidity.
- Hypothermia (Incorrect): Hypothermia is unlikely in cocaine toxicity. In fact, cocaine usually causes hyperthermia (elevated body temperature). Cocaine triggers vasoconstriction and increased metabolic activity, leading to excessive heat production. This can lead to dangerous hyperthermia, which may require immediate medical intervention.
- Hypotension (Incorrect): Cocaine toxicity typically leads to hypertension (high blood pressure) rather than hypotension. This is because cocaine stimulates alpha and beta adrenergic receptors, causing vasoconstriction and increased heart rate, which raises blood pressure. Severe hypertension can lead to complications like stroke or myocardial infarction.
- Respiratory Depression (Incorrect): Respiratory depression is not a common finding in acute cocaine toxicity. Instead, clients may experience tachypnea (rapid breathing) due to the heightened sympathetic response. Cocaine stimulates the respiratory centers in the brain, increasing breathing rates rather than depressing them.
Other Expected Findings:
In addition to tremors, clients with cocaine toxicity may exhibit symptoms like agitation, hallucinations, chest pain, tachycardia, dilated pupils, and seizures. Immediate medical attention is crucial to prevent severe complications such as cardiac arrhythmias or cerebrovascular accidents.