All of the following are correct regarding endotracheal intubation complications EXCEPT:

Question

Accepted Answer

C. Sinusitis is a common complication that develops within 48 hours of nasal intubation and requires routine prophylactic antibiotics. ## Endotracheal Intubation Complications: Timing and Management

**Key Point:** Understanding the timeline and pathophysiology of ETT complications is essential for prevention and early detection.

### Early Complications (During Intubation)

| Complication | Timing | Mechanism | Management |
|---|---|---|---|
| Tube obstruction | Within hours | Kinking, secretions, blood clots, tube migration | Regular suctioning, tube position checks |
| Sinusitis | 48 hours onwards | Obstruction of sinus ostia by tube; bacterial overgrowth | Avoid nasal route when possible; NO routine prophylaxis |
| Laryngeal edema | 24–72 hours post-extubation | Mucosal trauma, inflammatory response | Steroids (dexamethasone 0.5 mg/kg IV), humidified oxygen |
| Vocal cord injury | Immediate to delayed | Direct trauma during intubation or tube movement | Voice rest, speech therapy |

### Late Complications (After Extubation)

| Complication | Timeline | Pathophysiology | Risk Factors |
|---|---|---|---|
| Tracheal stenosis | Weeks to months | Cuff pressure > 30 cm H₂O → mucosal ischemia → fibrosis | Prolonged intubation, high cuff pressure, repeated intubations |
| Laryngeal stenosis | Weeks to months | Scarring of anterior/posterior larynx | Traumatic intubation, prolonged intubation |
| Tracheomalacia | Weeks to months | Loss of cartilage integrity from pressure necrosis | High cuff pressure, prolonged intubation |

**High-Yield:** Sinusitis is NOT a routine complication requiring prophylactic antibiotics. It develops in 5–60% of intubated patients (higher with nasal tubes) but is often subclinical. Prophylactic antibiotics are NOT recommended and promote antibiotic resistance. Treatment is indicated only if clinically significant (fever, purulent drainage, imaging confirmation).

**Clinical Pearl:** The cuff pressure should be maintained at 20–30 cm H₂O (or 25–30 mL air) to balance airway seal with mucosal perfusion. Pressures >30 cm H₂O cause capillary occlusion and ischemic injury within 15 minutes.

**Mnemonic: LOST** (Late complications of intubation):
- **L**aryngeal stenosis
- **O**bstructive tracheomalacia
- **S**tenosis (tracheal)
- **T**racheal granuloma

Answer

A. Laryngeal edema and stridor are delayed complications that typically manifest 24–72 hours post-extubation

Answer

B. Tracheal stenosis develops as a late complication due to prolonged cuff pressure exceeding mucosal perfusion pressure

Answer

D. Tube obstruction can occur due to kinking, secretions, or blood clots within 24 hours of intubation

All of the following are correct regarding endotracheal intubation complications EXCEPT:

Explanation

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