CPR APPLICATIONS FOUNDATION · CHAPTER 22 · TREATMENT
Treatment Foundations of Toxicology and Pharmacology Safety
Organize the chapter before drilling into individual CPR concepts.
Supplemental foundation map: this page orients the detailed CPR Applications for Chapter 22. It is not part of the canonical CPR object inventory.
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Normal Foundations
Abnormal Foundations
Treatment Foundations · You are here
22.28 · SOURCE CPR FOUNDATION
Concept
Treatment in toxicology and pharmacology safety means stabilize first, stop the offending exposure, reverse the mechanism when possible, enhance elimination when appropriate, and monitor for delayed harm. The right intervention depends on what is killing the patient now and what injury appears later.
Pattern
Step 1 gives a toxidrome, lab mismatch, EKG change, overdose timing, organ failure, or high-risk patient context. Acute poisonings need resuscitation and antidote logic. Drug adverse effects need discontinuation, supportive care, monitoring, substitution, or reversal.
Rule
- Treat the immediate physiologic threat first. Respiratory depression, shock, seizures, arrhythmias, and hyperthermia are time-critical.
- Stop the offending agent. Re-exposure can worsen injury.
- Monitor delayed toxicity. Acetaminophen, iron, long-acting opioids, and some drug reactions can worsen after an initial quiet period.
Applications
- Suspected opioid-associated respiratory depression → support ventilation, administer naloxone when indicated, activate emergency care, and monitor for recurrent sedation
- Potentially toxic acetaminophen exposure → assess timing and levels, begin N-acetylcysteine when indicated, and monitor hepatic injury; treatment duration depends on clinical and laboratory recovery
- Suspected drug-associated ventricular arrhythmia with syncope → urgent cardiac evaluation and stabilization; discontinue culpable QT-prolonging agents and correct potassium/magnesium abnormalities as indicated
- Drug rash mucosal lesions → stop drug and escalate
- Neutropenic fever → urgent broad-spectrum antibiotics
- Long-acting overdose → prolonged observation
- Tip: Early improvement does not always mean toxicity has resolved
CPR APPLICATIONS · ACTIVE REASONING
Match toxicologic treatment to the immediate threat
Predict the mechanism and consequence before checking. Worked explanations remain accessible without scripts. Responses are not stored or transmitted.
Reveal worked reasoning and transfer
Best answer: Support breathing, administer naloxone as indicated, activate emergency care, and monitor for recurrence.. Restoring ventilation is the immediate priority. Naloxone reverses opioid receptor effects, but recurrent sedation may occur when an opioid outlasts the antidote.
Change one variable: What changes if the suspected opioid has a substantially longer duration than naloxone?
Reveal worked reasoning and transfer
Best answer: Continue or extend acetylcysteine with toxicology-guided monitoring until appropriate clinical and laboratory discontinuation criteria are met.. The 2026 ACMT statement supports extending IV acetylcysteine when relevant toxicity markers or acetaminophen remain abnormal.
Change one variable: What if acetaminophen becomes undetectable but INR and liver injury markers worsen?
Reveal worked reasoning and transfer
Best answer: Protect rescuers, decontaminate appropriately, support airway and breathing, use atropine for muscarinic effects, and consider pralidoxime under expert guidance.. Atropine blocks muscarinic manifestations; oxime therapy may reactivate inhibited acetylcholinesterase when appropriate, alongside resuscitation and exposure control.
Change one variable: Why can atropine improve bronchorrhea without fully reversing nicotinic neuromuscular weakness?
Change the mechanism
See all mechanism comparisons without scripts
- Opioid-induced hypoventilation: Airway/ventilation and naloxone are priorities, with monitoring for recurrence.
- Acetaminophen toxicity during NAC course: Continue monitoring and extend antidote when stopping criteria have not been met.
- Organophosphate cholinergic crisis: Protect personnel, decontaminate, stabilize respiration, give atropine and consider oxime therapy.
Explain it back: For one question, explain why your choice is better than the strongest alternative, then identify the clinical finding that would change the conclusion.
Unscored educational exercises. Not independent clinical recommendations, validated assessments, or a substitute for local policy and expert evaluation.
How to use this foundation map
- Identify the organizing mechanism.
- Recognize the pattern.
- Restate the rule without looking.
- Test transfer with applications and question practice.
Pair CPR with the 5P Approach™ when solving cases and questions.