An abnormal EKG at rest, which may be due to abnormal serum electrolytes, abnormal cardiac electrical conduction, or certain medications, such as digitalis;
Heart conditions not related to CAD, such as mitral valve prolapse (drooping) or hypertrophy (increased size) of the heart; or
An inadequate increase in the heart rate and/or blood pressure during exercise.
If the initial EST does not clarify the diagnosis, additional tests are often used to clarify the condition. These further options include radionuclide isotope injection and ultrasound of the heart (stress echocardiography) during the stress test.
- Stretch, quadriceps
Lie on side. Rest head on pillow or hand. Bend knee that is on top. Grab heel of that leg. Gently pull that leg until front of thigh stretches. Hold position. Reverse position and repeat.
Part of the basal ganglia of the brain. The basal ganglia are interconnected masses of gray matter located in the interior regions of the cerebral hemispheres and in the upper part of the brainstem. The striatum is also called the striate body. It includes the caudate nucleus and the lentiform nucleus. The term striatum (striate) […]
An abnormal narrowing of a body passage, especially a tube or a canal. The stricture may be due, for example, to scar tissue or to a tumor. Stricture refers to both the process of narrowing and the narrowed part itself.
- Stricture, esophagus, acute
A narrowing or closure of the normal opening of the swallowing tube leading to the stomach, usually caused by scarring from acid irritation. Acute, complete obstruction of the esophagus occurs when food (usually meat) is lodged in the esophageal stricture. Patients experience chest pain, and are unable to swallow saliva. Attempts to relieve the obstruction […]
- Striopallidodentate calcinosis
Striopallidodentate (SPD) calcinosis, a condition first described in 1930 by T. Fahr and therefore called Fahr syndrome, is a genetic (inherited) neurological disorder characterized by abnormal deposits of calcium in certain of areas of the brain (including the basal ganglia and the cerebral cortex). Symptoms may include motor function deterioration, dementia, mental retardation, spastic paralysis, […]