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What is status asthmaticus?

Status Asthmaticus - StatPearls - NCBI Bookshelf Status asthmaticus is a medical emergency, an extreme form of asthma exacerbation characterized by hypoxemia, hypercarbia, and secondary respiratory failure.

What is the Pulsus paradoxus in status asthmaticus?

Pulsus paradoxus is the difference between end-expiratory and end-inspiratory systolic blood pressure. It is augmented to more than 12 mm Hg in status asthmaticus, although it may paradoxically decline in late-stage with increasing fatigability and loss of respiratory drive.

When is mechanical ventilation indicated in the treatment of Status asthmaticus?

Consider mechanical ventilation as a salvage therapy in patients with status asthmaticus. Mechanical ventilation in patients with asthma requires careful monitoring, because these patients have high end-expiratory pressure and, therefore, are at high risk for pneumothorax.

What are the risk factors for Status asthmaticus (SAS)?

Patients with other preexisting conditions (eg, restrictive lung disease, congestive heart failure, chest deformities) are at particular risk of death from status asthmaticus. Patients who smoke regularly have chronic inflammation of the small airways and are also at greater risk of death from status asthmaticus.


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