TCAR Education Programs, Stephen Von Weller Radiopaque Radiopaque structures impede penetration by x-rays and, therefore, appear white on radiographic images. Some structures partially absorb radiation and are represented in varying degrees of radiopacity... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Reactive oxygen species Highly reactive chemicals formed from oxygen, including hydrogen peroxide (H2O2), superoxide (O2-), and hydroxyl radicals (bleach) (OH). These substances cause oxidant injury to cells. Also known as f... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Rebound tenderness Pain when pressure is removed from the abdomen; also called Blumber's sign.... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Recidivism Relapsing to a previous condition or mode of behavior. In the context of trauma care, this term is used to refer to individuals who repeatedly sustain traumatic injuries; often those who engage in hig... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Refractory A disease or condition that does not respond to treatment. PRONUNCIATION: reh-FRAK-tor-ee.... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Refractory hypoxemia Inadequate arterial oxygen despite sufficient alveolar oxygen; diffusion failure. Often evaluated with the P:F ratio.... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Reimplantation The reattachment of an amputated body part. Also known as replantation.... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Renal failure, intrarenal Decreased urine output due to damage to the renal glomeruli or tubules. Caused by extended low blood flow or exposure to nephrotoxic agents. Also known as infrarenal failure.... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Renal failure, myoglobinuric A form of intrarenal failure caused by high levels of myoglobin in the urine due to muscle breakdown in the patient with rhabdomyolysis.... R 3/06/2026
TCAR Education Programs, Stephen Von Weller Renal failure, postrenal Decreased urine output due to a blockage or obstruction below the kidneys in the ureters, bladder, or urethra.... R 3/06/2026
