The Sudden Headache on Warfarin: Red Flags and Informed Consent
Dr. T has practiced for 22 years. A 67-year-old woman presents with a 2-day history of sudden, severe occipital headache that began while she was gardening. She has atrial fibrillation and takes warfarin; her INR last week was 3.1. She reports a fall in the bathtub two days ago and now has neck stiffness. Her blood pressure in the office is 188/106. She has no fever, no focal weakness, and no slurred speech. She asks Dr. T to “crack my neck like you did last year-it always helps.” Dr. T notes restricted cervical rotation and a tender upper cervical spine. He is running 25 minutes behind and considers a gentle cervical adjustment followed by a note to see her primary care physician next week if she is no better. He has not yet discussed risks or alternatives.
1. Identify the red flags and explain whether a cervical adjustment is appropriate in this presentation.
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Sudden severe occipital headache in a 67-year-old on warfarin after a fall is a red flag for intracranial hemorrhage, cervical artery dissection, or hypertensive emergency-not routine somatic dysfunction. A blood pressure of 188/106, anticoagulation, and recent trauma make cervical manipulation contraindicated until serious pathology is excluded.
The standard of care requires urgent medical evaluation-emergency department or same-day physician-not a “gentle adjustment” and a note for next week. The Board’s competence standards require recognizing conditions outside the chiropractic scope and referring promptly. Dr. T’s schedule pressure is irrelevant to the clinical decision. He should recheck vital signs, perform a focused neurologic examination, document the red flags, and arrange emergency transfer. If the patient refuses, he should document the informed refusal and the advice given.
2. What does valid informed consent require, and what should Dr. T document?
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Valid informed consent requires a working diagnosis, the nature of the proposed adjustment, the material risks-including the rare but serious vascular risk-reasonable alternatives, and the consequences of declining. Even if Dr. T concluded manipulation was safe, he had not discussed risks or alternatives, so any consent would not have been informed. In this case consent is not the central issue: manipulation is not appropriate at all.
The record should include the onset and character of the headache, the fall, anticoagulant use and INR, blood pressure, neurologic findings, the decision not to manipulate, the referral, the patient’s response, and follow-up instructions. Documenting the contraindication and referral protects the patient and demonstrates compliance with Board standards. A brief note that the patient was “adjusted and advised to follow up” would be inadequate and could support a competence or recordkeeping charge.