The Home Health Aide (HHA) is trained and certified in caring for patients in their homes. The primary role of the HHA is to perform assistive duties, such as: personal hygiene, grooming, transfers (bed to chair), range-of motion exercises (moving the joints(, and proper positioning of the patient. Take vital signs: blood pressure, pulse, respiratory rate, and temperature), change non-sterile dressings (coverings for wounds), and assist with oral medications.