Biot's Breath
Specialty: Respiratory.
Why it occurs
- Destructive or ischemic lesions of the pons or medulla oblongata (direct damage to the pneumotaxic center that coordinates respiratory rhythmicity)
- Decompensated intracranial hypertension with impending tonsillar herniation (mechanical compression of the brainstem nuclei)
- Severe bacterial meningitis or meningoencephalitis (inflammation of the basal subarachnoid space with vascular or trunk parenchyma involvement)
- Massive and potentially lethal intoxication by central nervous system depressants (barbiturates, benzodiazepines or industrial alcohol)
- Brain trauma with skull base fracture and diffuse axonal damage in the brainstem
Initial workup
Urgent computed tomography (CT) or magnetic resonance imaging (MRI) of the brain; Lumbar puncture (after ruling out massive intracranial hypertension by CT) for cerebrospinal fluid analysis; Continuous intracranial pressure (ICP) monitoring; Arterial blood gases and urgent metabolic panel.
red flags
Completely irregular breathing with imprecise periods of apnea followed by few breaths of variable depth, deep stupor or coma, non-reactive pupils or anisocoria, severe hemodynamic instability, or imminent respiratory arrest.
Standard management
- Mannitol 20% — intravenous infusion of 0.5-1 g/kg over 20-30 minutes if massive cerebral edema and intracranial hypertension are suspected
- 3% hypertonic saline solution — alternative to mannitol for ICP control, administered centrally
- Ceftriaxone — 2 g intravenously every 12 hours empirically if a meningeal infectious origin is suspected
- Dexamethasone (10 mg intravenous initially followed by 4 mg every 6 hours if there is peritumoral edema).
Educational guidance for study. It is NOT a prescription recommendation. The actual choice depends on the cause, the patient, and current guidelines.
- Area
- Respiratory
- Listed causes
- 5
- Treatment options
- 4