Streptococcus, group A
A well-known strain (type) of streptococcus (strep) bacteria that can cause strep throat and common skin problems such as impetigo as well as rheumatic fever.
Autoimmune reactions to strep have also recently been associated with a number of disorders, including guttate psoriasis (cradle cap), Sydenham’s chorea (a movement disorder related to rheumatic fever), obsessive-compulsive disorder, Tourette syndrome, autism, and anorexia nervosa.
Group A strep are also known popularly as flesh-eating bacteria.
- Streptococcus, group B
A major cause of infections, including those involving pregnant women and newborn infants. Group B strep can infect the mother’s uterus, placenta, and urinary tract; in fact, it is present in the vagina of around 10 to 25 percent of all pregnant women. Group B strep can be transferred between heterosexual couples via oral sex. […]
Acceleration of heart and lung action, paling or flushing, or alternating between both, inhibition of stomach and upper-intestinal action to the point where digestion slows down or stops, the general effect on the sphincters of the body, constriction of blood vessels in many parts of the body, liberation of nutrients (particularly fat and glucose) for […]
- Stress echocardiography
A supplement to the routine exercise cardiac stress test. During stress echocardiography, the sound waves of ultrasound are used to produce images of the heart at rest and at the peak of exercise. In a heart with normal blood supply, all segments of the left ventricle (the major pumping chamber of the heart) exhibit enhanced […]
- Stress exercise thallium scan
an exercise part and a rest part. The patient has an IV (intravenous) line placed in the arm, EKG patches are applied to chest and connected to an EKG machine to monitor the heart. Then the patient exercises as hard as possible on the treadmill to give information about how well the heart functions with […]
- Stress fracture
A fracture caused by repetitive stress, as may occur in sports, strenuous exercise, or heavy physical labor. Stress fractures are especially common in the metatarsal bones of foot, particularly in runners. Osteoporosis increases the possibility of stress fractures. Treatment is by rest, disuse, and sometimes splinting or casting to prevent reinjury during healing.