How many seconds should adequate ventilation with bag-mask be performed before reassessing?

Adequate ventilation with a bag-mask device should typically be continued for a duration of about 30 seconds before reassessing the effectiveness of the ventilations. This time frame strikes a balance between providing enough ventilation to clear carbon dioxide and maintain oxygenation without prolonging the reassessment process excessively. During this period, you should be observing for signs that indicate whether the ventilation is successful, such as chest rise, improving oxygenation, and patient responsiveness.

Choosing this duration allows healthcare providers to make a more informed decision on whether the current technique is effective or if adjustments are required, such as changing the mask fit or considering alternative airway management methods. It's important to consistently reassess after this interval, as both the condition of the patient and technique efficacy are dynamic and can change rapidly.