Chronic inflammatory autoimmune disease characterized by unusual antibodies in
the blood that target tissues of the body with a butterfly-shaped rash that appears on
the face (See Fig. 5–12.)
There is a sensitivity to sunlight, fatigue, and joint pain. Treatment includes anti-
inflammatories, immunosuppressives, and corticosteroids. The rash tends to get worse
when exposed to direct sunlight.
Diagnostic Procedures
Cardiovascular System
Insertion of a catheter into the heart through a vein or artery, usually of an arm
(brachial approach) or leg (femoral approach) to provide evaluation of the heart
(See Fig. 5–13.)
During CC, the cardiologist may also inject a contrast medium and take x-rays
(angiography). Cardiac catheterization is used mainly in diagnosing and evaluating
congenital, rheumatic, and coronary artery lesions, including myocardial infarction.
Tests that measure levels of enzymes and proteins in the blood that increase with an
injury to heart muscle, such as from a heart attack
Cardiac enzyme studies help determine whether angina, shortness of breath, or abnor-
mal electrocardiography results indicate a heart attack or imminent heart attack.
194 CHAPTER 5• Cardiovascular and Lymphatic Systems
systemic lupus erythe-
matosus (SLE)
LŪ-pŭs
ĕr-ĭ-thē-mă-TŌ-sĭs
cardiac enzyme studies
KĂR-dē-ăk ĔN-zīm
cardiac catheterization
(CC)
KĂR-dē-ăk
kăth-ĕ-tĕr-ĭ-ZĀ-shŭn
cardi: heart
-ac: pertaining to
Figure 5-12Butterfly rash of systemic lupus erythematosus.