A BiPAP machine, or Bilevel Positive Airway Pressure machine, is a medical device used to help people with breathing difficulties, particularly those with sleep apnea or certain respiratory conditions. Unlike continuous positive airway pressure (CPAP) machines, BiPAP provides two different pressure levels: a higher pressure during inhalation and a lower pressure during exhalation. This dual-pressure system makes it more comfortable for some individuals to breathe and can be beneficial for those who require additional respiratory support.