Invasive Respiratory Support in Critical Pediatric Asthma

Area of Science:

• Critical Care Medicine
• Pulmonology
• Pediatric Respiratory Medicine

Background:

• Severe asthma requiring mechanical ventilation has decreased due to noninvasive therapies.
• Mechanical ventilation is a life-saving intervention when other treatments fail.
• Advance planning for intubation and ventilation is crucial.

Purpose of the Study:

• To outline best practices for mechanical ventilation in severe asthma.
• To highlight potential complications and strategies to mitigate them.
• To discuss alternative and rescue therapies.

Main Methods:

• Review of current mechanical ventilation strategies for severe asthma.
• Discussion of ventilator parameter optimization (e.g., plateau pressure, PEEP).
• Evaluation of adjunctive therapies like Heliox, inhaled anesthetics, and ECMO.

Main Results:

• Elevated minute ventilation can cause hyperinflation and hemodynamic instability.
• Plateau pressure should ideally be kept below 25-30 cm H2O.
• Low ventilator rates and PEEP, without rapid blood gas correction, are recommended.
• Extracorporeal membrane oxygenation (ECMO) is effective for air-leak syndrome.

Conclusions:

• Mechanical ventilation for severe asthma requires careful management to prevent complications.
• Adjunctive therapies and rescue options like ECMO can be vital.
• While most mechanically ventilated children survive, long-term asthma-related mortality is a concern.