<prompt> Which one of the following can provide 100 oxygen?VentimaskSimple oxygen maskOxygen catheterAnesthetic face mask  <response>: Anaesthesia face mask FEATURES These facemasks have a cuff that allows for a complete seal to be achieved between the mask and the patients face. Anesthetic facemasks can therefore be used to deliver non-invasive ventilation NIV. In order to ventilate with an anesthetic facemask youll need a pressurized gas source anesthesia gas suppliessuch as a cylinder or gas wall supply. If no pressurized gas source is available, a self-inflating bag will allow for positive pressure-ventilation through an anesthetic facemask. The cuff volume can typically be adjusted through a valve. A somewhat under-inflated cuff usually achieves a better seal than a fully inflated one. Most manufacturers supply these masks with a detachable hook ring, which allows for the mask to be held in place with a head strap for delivering NIV. USES Anaesthetic facemasks are generally used in two different settings scenarios: 1. For bag-mask ventilation BMV in the OR or resuscitation setting. 2. To provide non-invasive ventilation NIV or respiratory suppo, most commonly as either continuous or biphasisc positive airway pressure CPAP or BIPAP in patients with respiratory compromise. 