An oropharyngeal airway should be measured
  1. From the corner of the mouth to the earlobe.
  2. From the corner of the mouth to the pharynx.
  3. From the nose to the earlobe.
  4. From the nose to the pharynx.
Explanation
Answer - A - Ideally, the corner of the mouth to the earlobe is the best measurement tool for sizing an OPA.
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