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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).
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).
Microscopic hematuria is sometimes observed in healthy people after exercise [98] or as a consequence of contamination of the sample with menstrual blood. [97] Pathologic causes of hematuria are diverse and include trauma to the urinary tract, kidney stones , urinary tract infections , drug toxicity , genitourinary cancers, and a variety of ...
Mesangial proliferative glomerulonephritis often presents with hematuria (gross or microscopic) or nephrotic syndrome. [2] Presentation can also include asymptomatic proteinuria. [2] These presenting symptoms are relatively non-specific and are often seen in other glomerular disorders.
Most patients with thin basement membrane disease are incidentally discovered to have microscopic hematuria on urinalysis. The blood pressure, kidney function, and the urinary protein excretion are usually normal. Mild proteinuria (less than 1.5 g/day) and hypertension are seen in a small minority of patients.
Hematuria (one of the symptoms of Nephritic syndrome Historically, nephritic syndrome has been characterized by blood in the urine ( hematuria ), high blood pressure ( hypertension ), decreased urine output <400 ml/day ( oliguria ), red blood cell casts , pyuria , and mild to moderate proteinuria .
Chronic asymptomatic bacteriuria occurs in as many as 50% of the population in long-term care. [12] There is an association between asymptomatic bacteriuria in pregnant women with low birth weight, preterm delivery, cystitis, infection of the newborn and fetus death. [8] [13] [10] However, most of these studies were graded as poor quality. [8]
Blood tests (to monitor levels of platelets, red blood cells, and white blood cells), stool tests (especially to check for microscopic or macroscopic levels of fresh or old blood), urinalysis (to help monitor kidney function, like blood urea nitrogen, or BUN, levels, pH, and for blood in the urine- hematuria) [3]