Final answer:
CPAP therapy is typically applied if the SBP is within the range of normal to prehypertension levels, ensuring that the MAP remains above 60 mm Hg to avoid severe complications such as ischemia or hypoxia.
Step-by-step explanation:
CPAP therapy may be considered when the systolic blood pressure (SBP) is in a certain range of values, which must be adequate to ensure circulation and tissue oxygenation. The classification of blood pressure suggests that an SBP of 90-119 mmHg is normal, while an SBP of 120-139 mmHg is prehypertension, and an SBP of 140 mmHg or higher indicates hypertension. Mean Arterial Pressure (MAP), which is significant for determining organ perfusion, is normally within the range of 70-110 mm Hg, and pressures below 60 mm Hg may lead to ischemia and other severe complications. Therefore, CPAP may be applied if the SBP is within these ranges, ensuring MAP does not fall below 60 mm Hg.