Medical Emergencies · single question

What is the appropriate chair position for a patient with COPD during dental treatment?

  1. Semi-supine / upright seated
  2. Trendelenburg (head below heart)
  3. Fully supine
  4. Left lateral decubitus
Show answer and explanation

Correct answer: A. Semi-supine / upright seated

  • A. Correct. COPD patients should be treated SEMI-SUPINE to UPRIGHT. These patients rely on accessory respiratory muscles and are often orthopneic; an upright posture lets the diaphragm descend freely and maximizes functional residual capacity. Also avoid rubber dam if it worsens the sense of breathlessness, keep supplemental oxygen low-flow, and avoid respiratory depressants.
  • B. Trendelenburg pushes abdominal contents against the diaphragm and is strongly contraindicated.
  • C. Supine positioning compresses the diaphragm by abdominal contents and worsens dyspnea in COPD patients.
  • D. Left lateral decubitus is used for pregnant patients with supine hypotensive syndrome, not for COPD.

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