Neurocritical Care
Core concepts
Understand the principles of neurocritical care: airway and ventilation, hemodynamic targets, and the prevention of secondary brain injury. Know the management of elevated intracranial pressure, including sedation, osmotherapy, and decompressive surgery, and the monitoring modalities (ICP, CPP, brain tissue oxygenation, EEG). Cover status epilepticus, the management of the comatose patient, and brain death determination. Also learn the principles of fluid and electrolyte management in neurosurgical patients, including sodium disorders.
Traps
- Assuming a single ICP reading is sufficient; trends and CPP matter.
- Missing nonconvulsive status epilepticus in a comatose patient; EEG is required.
- Forgetting that hyponatremia in neurosurgical patients can be from SIADH or cerebral salt wasting, which have different treatments.
- Confusing brain death criteria with severe disability; the criteria are specific and require formal testing.
Worked example / rule of thumb
A comatose patient after subarachnoid hemorrhage with no obvious seizures may still have nonconvulsive status epilepticus; obtain EEG. Rule of thumb: in neurocritical care, protect the brain by avoiding hypoxia, hypotension, hyperthermia, and hyperglycemia, the four "H" secondary insults.
Ethics and Patient Safety
Core concepts
Understand the principles of biomedical ethics: autonomy, beneficence, nonmaleficence, and justice. Know the elements of informed consent, including capacity, voluntariness, and disclosure of risks, benefits, and alternatives. Learn the approach to surrogate decision-making, advance directives, and end-of-life care. Cover patient safety: error reporting, the Swiss cheese model, checklists, and the surgical safety checklist. Also understand conflict of interest, research ethics, and the duty to disclose errors.
Traps
- Assuming a signed consent form is sufficient; consent requires understanding and voluntariness.
- Missing that a patient with capacity can refuse life-saving treatment.
- Forgetting that surrogate decision-makers should use substituted judgment or best interests.
- Confusing error disclosure with admission of liability; disclosure is an ethical duty.
Worked example / rule of thumb
A competent adult refuses surgery that the team believes is necessary; the ethical response is to respect the refusal after ensuring understanding. Rule of thumb: consent is a process, not a signature, and the four ethical principles guide dilemmas when the law is silent.