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For this test, the patient takes oral phenazopyridine (Pyridium) 200 mg three times a day, and indigo carmine or methylene blue is filled into the empty urinary bladder via a urethral catheter. Pyridium turns urine orange in the kidneys, and methylene blue (or indigo carmine) turns urine blue in the bladder. [1] A tampon is placed into the ...
Methylene blue may turn it blue to bluish-green. [32] Phenolphthalein, a stimulant laxative previously found in Ex-Lax, [33] can produce colors ranging from red to purple, and levodopa, used to treat Parkinson's disease, may result in "cola-colored" urine. [27] The clarity of urine is also recorded during urinalysis.
Since its reduction potential is similar to that of oxygen and can be reduced by components of the electron transport chain, large doses of methylene blue are sometimes used as an antidote to potassium cyanide poisoning, a method first successfully tested in 1933 by Matilda Moldenhauer Brooks in San Francisco, [15] although first demonstrated ...
The blue light cystoscopy contains a light source and light is transmitted through a fluid light cable connected to an endoscope to light up the area to be observed. The photosensitizing agent preferentially accumulates porphyrins in malignant cells as opposed to nonmalignant cells of urothelial origin.
New methylene blue (also NMB) [clarify] is an organic compound of the thiazine class of heterocycles. It is used as a stain and as an antimicrobial agent. It is classified as an azine dye, and the chromophore is a cation, the anion is often unspecified.
The original sources of azure B (one of the oxidation products of methylene blue) were from polychromed methylene blue solutions, which were treated with oxidizing agents or allowed to naturally age in the case of Romanowsky. [3] [13] Ernst Malachowsky in 1891 was the first to purposely polychrome methylene blue for use in a Romanowsky-type stain.
Longer lives. Lifespans have increased by around a decade since the 1960s, putting even more pressure on people to save. The number of Americans 65 and older is projected to increase from 58 ...
Methyl blue is a chemical compound with the molecular formula C 37 H 27 N 3 Na 2 O 9 S 3.It is used as a stain in histology, [1] and stains collagen blue in tissue sections. It can be used in some differential staining techniques such as Mallory's trichrome stain and Gömöri trichrome stain, and can be used to mediate electron transfer in microbial fuel cells.
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