Sleep-Disordered Breathing in ICU: Management, Complications & Treatment Guide.
Sleep-Disordered Breathing in the Intensive Care Unit Management and complications:
Management:
Obstructive sleep apnea and obesity hypoventilation should be considered in patients presenting with hypercapnic respiratory failure. Central sleep apnea should be suspected in patients with a history of heart failure, stroke, or narcotic use.
Continuous positive airway pressure (CPAP) is commonly used in patients with obstructive sleep apnea, as it helps maintain airway patency and correct hypercapnia. In cases where hypoventilation is present, bilevel positive airway pressure (BiPAP) is often required, particularly when there is a need for a backup respiratory rate.
If available, a sleep study is the best method to diagnose sleep-disordered breathing and determine appropriate pressure settings. However, if immediate therapy is required, treatment should be initiated in a closely monitored setting such as an ICU.
Patients with severe obesity or severe OSA may require higher pressures to resolve respiratory events. If pressures are too low, hypoxemia may persist. If pressures are too high, complications may arise, reducing patient compliance.
Complications of CPAP/BiPAP:
Common complications include nasal or oral dryness, eye dryness, mask leakage, aerophagia leading to gastric distention, and skin irritation.
In patients presenting with signs or symptoms suggestive of severe obstructive sleep apnea, central sleep apnea, or obesity hypoventilation syndrome, the first step is to determine whether an inpatient sleep study is available. If a sleep study is available, it should be performed at the bedside to confirm the diagnosis and to titrate CPAP or BiPAP therapy.
If a sleep study is not available and the patient has hypercapnia, further evaluation is needed. If there is concern for central sleep apnea due to comorbid conditions, empiric BiPAP therapy should be initiated with close monitoring, including overnight oximetry, and arterial blood gas analysis. A backup respiratory rate should be added if central sleep apnea is suspected.
If there is no concern for central sleep apnea, empiric CPAP therapy should be initiated with close monitoring. If the patient is intolerant to CPAP, escalation to tracheostomy may be required.
Similarly, if a patient receiving BiPAP therapy is intolerant, tracheostomy with or without nocturnal ventilation may be considered as a definitive treatment option.