A pulse oximeter is a medical device that measures levels of blood oxygen saturation, monitors pulse rate and calculates heart rate.It utilizes a non-invasive analysis to measure blood oxygen saturation, so no blood samples need to be drawn.ormal blood oxygen saturation readings at or near sea level is between 95 to 100 percent, as measured by the pulse oximeter. Normal arterial blood flow and calculated heart rate depend on the state and age of the patient (such as newborn or unconscious adult).
agitated depression. a severe depressive disorder characterized by severe anxiety accompanied by continuous physical restlessness, and, frequently, somatic symptoms. Psychomotor agitation is prominent. Delusions, as well as depression with psychotic features, may also be present.
Depressive Disorders. A depressive disorder is not a passing blue mood but rather persistent feelings of sadness and worthlessness and a lack of desire to engage in formerly pleasurable activities.A complex mind/body illness, depression can be treated with drugs and/or therapy.1  Definition.A depressive disorder is an illness that involves the body, mood, and thoughts. It interferes with daily life, normal functioning, and causes pain for both the person with the disorder and those who care about him or her. A depressive disorder is not the same as a passing blue mood.epressive Disorders. A depressive disorder is not a passing blue mood but rather persistent feelings of sadness and worthlessness and a lack of desire to engage in formerly pleasurable activities.