Questions About Chronic Diseases Related

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In the UK, orthognathic surgery is likely to:

  • A. Be undertaken in specialist craniofacial surgery units rather than in maxillofacial surgery units.
  • B. Be associated with a high incidence of postoperative nausea and vomiting.
  • C. Require a nasal rather than an oral tracheal tube when a Le Fort I osteotomy is performed.
  • D. Require admission of the patient to a high-dependency unit.
Correct Answer: B

Rationale: Orthognathic surgery corrects jaw deformities in the UK, typically by maxillofacial surgeons, not solely craniofacial units (reserved for complex congenital cases). Postoperative nausea and vomiting (PONV) are common due to blood swallowing, prolonged surgery, and opioids risk factors per Apfel criteria. Le Fort I osteotomy (maxillary) often uses oral intubation; nasal tubes suit mandibular focus or surgeon preference, not a requirement. High-dependency unit (HDU) admission isn't routine most recover in general wards unless complications (e.g., airway) arise. Cleft palate repair precedes, not follows, orthognathic work. PONV's prevalence reflects surgical and anaesthetic challenges, necessitating robust antiemetic prophylaxis.