Circuit Set-ups to Reduce Virus Aerosolization During Noninvasive Positive Pressure Ventilation: Dancing in the Dark.

Providing optimal care to patients with acute respiratory illness while preventing hospital transmission of COVID-19 is of paramount importance during the pandemic; the challenge lies in achieving both goals simultaneously. Controversy exists regarding the role of early intubation versus use of non-invasive respiratory support measures to avoid intubation. This review summarizes available evidence and provides a clinical decision algorithm with risk mitigation techniques to guide clinicians in care of the hypoxemic, non-intubated, patient during the COVID-19 pandemic. Although aerosolization of droplets may occur with aerosol-generating medical procedures (AGMP), including high flow nasal oxygen and non-invasive ventilation, the risk of using these AGMP is outweighed by the benefit in carefully selected patients, particularly if care is taken to mitigate risk of viral transmission. Non-invasive support measures should not be denied for conditions where previously proven effective and may be used even while there is suspicion of COVID-19 infection. Patients with de novo acute respiratory illness with suspected/confirmed COVID-19 may also benefit. These techniques may improve oxygenation sufficiently to allow some patients to avoid intubation; however, patients must be carefully monitored for signs of increased work of breathing. Patients showing signs of clinical deterioration or high work of breathing not alleviated by non-invasive support should proceed promptly to intubation and invasive lung protective ventilation strategy. With adherence to these principles, risk of viral spread can be minimized.

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Circuit Set-ups to Reduce Virus Aerosolization During Noninvasive Positive Pressure Ventilation: Dancing in the Dark.

References

Knowledge translation tools to guide care of non-intubated patients with acute respiratory illness during the COVID-19 Pandemic.

Lessons Learned in Critical Care at a 23 Hospital Health System in New York During the Coronavirus Disease 2019 Pandemic.

Non Invasive Respiratory Support Therapies in COVID-19 Related Acute Respiratory Failure: Looking at the Neglected Issues.