What is the recommended ventilation rate for a casualty with suspected increased intracranial pressure?

The recommended ventilation rate for a casualty with suspected increased intracranial pressure is typically around 20 breaths per minute. This rate is aligned with guidelines aiming to prevent hypercapnia (elevated carbon dioxide levels in the blood), which can exacerbate intracranial pressure. By maintaining an appropriate ventilation rate, the goal is to facilitate adequate gas exchange and reduce the risk of complications associated with increased pressure within the skull.

This 20 breaths per minute rate is calculated to ensure that the patient receives adequate oxygenation while not over-ventilating, which can lead to respiratory alkalosis and further complications. A balance is essential in managing patients with increased intracranial pressure, hence the preference for this specific ventilation rate.

Other rates suggested in the options, such as 10 breaths per minute or higher rates like 25 breaths per minute, may not effectively address the need to manage intracranial pressure without causing additional adverse effects.