Final answer:
Pursed lip breathing is a breathing technique that can assist patients with asthma during an attack by slowing down breathing and reducing the work of breathing.
Step-by-step explanation:
Pursed lip breathing is a breathing technique that can assist patients with asthma during an attack. This technique involves inhaling through the nose and exhaling through pursed lips, which helps to prolong the exhalation phase and prevent airways from collapsing. By doing so, pursed lip breathing helps to slow down breathing and reduce the work of breathing, making it easier for patients with asthma to breathe during an attack.