Antares' size/Sun's size = (5840/3340)2 Ã Sqrt[9120] = 3.057 Ã 95.5 = 292. Antares is almost 300 times the size of the Sun! If the Sun were replaced by Antares, the inner planets Mercury, Venus, and Earth would be inside Antares! It is a red giant star---a star close to death.
The Modified Medical Research Council Dyspnea Scale, or MMRC, uses a simple grading system to assess a patient's level of dyspnea -- shortness of breath. This scale doesn't define the sensation of breathlessness per se, but rather the degree of disability that such breathlessness poses on day-to-day activities.
Director of OSHA-compliant Respiratory Protection Program (usually the hospital Employee Health Director) reviews the medical clearance questionnaire and decides if employee needs referral to personal physician for clearance to wear PPE, N95 or PAPR.