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Hematuria can be classified according to visibility, anatomical origin, and timing of blood during urination. [1] [6]In terms of visibility, hematuria can be visible to the naked eye (termed "gross hematuria") and may appear red or brown (sometimes referred to as tea-colored), or it can be microscopic (i.e. not visible but detected with a microscope or laboratory test).
The syndrome presents with hematuria (blood in the urine) and flank (a region of the lower back beneath the ribs and above the ilium) pain which can result from a number of causes. Nonglomerular causes of bleeding (e.g., urinary infection, tumor, or nephrolithiasis) must be excluded.
Hematuria (one of the symptoms of Nephritic syndrome. Historically, nephritic syndrome has been characterized by blood in the urine (), high blood pressure (hypertension), decreased urine output <400 ml/day (), red blood cell casts, pyuria, and mild to moderate proteinuria.
For an adult patient with isolated hematuria, tests such as ultrasound of the kidney and cystoscopy are usually done first to pinpoint the source of the bleeding. These tests would rule out kidney stones and bladder cancer, two other common urological causes of hematuria. In children and younger adults, the history and association with ...
Microhematuria, also called microscopic hematuria (both usually abbreviated as MH), is a medical condition in which urine contains small amounts of blood; the blood quantity is too low to change the color of the urine (otherwise, it is known as gross hematuria).
Most patients have been reported to have gross or microscopic hematuria. [8] Significantly increased serum lactate dehydrogenase levels and proteinuria may also be observed. [7] Renal angiography is still the gold standard, but CT renal angiography, CT angiography, and DMSA radioisotope scan can also be used to establish the diagnosis. [4]
Hemoglobinuria is a condition in which the oxygen transport protein hemoglobin is found in abnormally high concentrations in the urine. [1] The condition is caused by excessive intravascular hemolysis, in which large numbers of red blood cells (RBCs) are destroyed, thereby releasing free hemoglobin into the plasma. [2]
Thin basement membrane disease must be differentiated from the other two common causes of glomerular hematuria, IgA nephropathy and Alport syndrome. The history and presentation are helpful in this regard: [citation needed] In Alport syndrome, there is often a family history of kidney failure, which may be associated with hearing impairment.
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