Blood Thinners Risks
Emergency bleeding • stroke risk • reversal

Bleeding risks: what to watch for

Updated 2026-02-04

The goal is not to scare you — it’s to help you recognize when “wait and see” is unsafe.

High‑risk bleeding scenarios

  • Head injury (even “minor”): risk of intracranial hemorrhage and delayed bleeding.
  • GI bleeding: black/tarry stool, blood in stool, vomiting blood, severe dizziness.
  • Major bruising or expanding hematoma: especially after a fall or blunt impact.
  • Post‑procedure bleeding: dental work, surgery, invasive tests.

Early warning signs that should trigger urgent assessment

  • New severe headache, confusion, slurred speech, weakness, unequal pupils
  • Fainting, chest pain, shortness of breath, pallor, clammy skin
  • Vomiting blood, black stools, rapid heart rate, unexplained severe abdominal pain
  • Bleeding that won’t stop with firm pressure

What hospitals may do (high level)

  • Assess vitals and risk, draw labs, and image when indicated (e.g., CT for head trauma).
  • Consider reversal strategies depending on the drug, time since last dose, and severity.
  • Provide transfusion support if needed (blood products), and consult surgery/interventional teams.

Key point: the sooner staff know you’re anticoagulated/antiplatelet‑treated, the sooner the right pathway starts.

Emergency rule of thumb: if there is potential for internal bleeding (especially head injury), get urgent assessment and disclose your blood thinner immediately.
Evidence topics: atrial fibrillation, stroke prevention, DVT/PE, bleeding risks, trauma, reversal, age risk