Which bacteria nitrite positive




















Nitrites in Urine. How do you test for nitrites in urine? What is it used for? Why do I need a nitrites in urine test? Symptoms of a UTI may include: Frequent urge to urinate, but little urine comes out Painful urination Dark, cloudy, or reddish colored urine Bad smelling urine Weakness and fatigue , particularly in older women and men Fever. What happens during a nitrites in urine test? Clean your genital area with a cleansing pad given to you by your provider.

Men should wipe the tip of their penis. Women should open their labia and clean from front to back. Start to urinate into the toilet. Move the collection container under your urine stream. Collect at least an ounce or two of urine into the container, which should have markings to indicate the amounts. Finish urinating into the toilet. Return the sample container as instructed by your health care provider.

Will I need to do anything to prepare for the test? It can generate hydrogen peroxide, which may adversely affect host cell membranes through the production of reactive oxygen species. Treatments differ for gonorrheal and nongonococcal urethritis.

However, N. NGU is most commonly treated using tetracyclines such as doxycycline and azithromycin ; erythromycin is an alternative option. Tetracyclines and fluoroquinolones are most commonly used to treat U. Clindamycin and fluoroquinolones are alternatives. Like other mycoplasma, M. Urinary tract infections can cause inflammation of the urethra urethritis , bladder cystitis , and kidneys pyelonephritis , and can sometimes spread to other body systems through the bloodstream.

Table 1 captures the most important features of various types of UTIs. A strain of bacteria associated with a bladder infection shows gram-negative rods. What species is most likely to be the causative agent? Skip to main content. Urogenital System Infections. Search for:. Bacterial Infections of the Urinary System Learning Objectives Identify the most common bacterial pathogens that can cause urinary tract infections Compare the major characteristics of specific bacterial diseases affecting the urinary tract.

Why is it important to identify the causative agent in a UTI? Think about It What is the most common cause of a kidney infection? What are the most common symptoms of a kidney infection? Think about It What are the three most common causes of urethritis? What three members of the normal microbiota can cause urethritis? Bacterial Infections of the Urinary Tract Urinary tract infections can cause inflammation of the urethra urethritis , bladder cystitis , and kidneys pyelonephritis , and can sometimes spread to other body systems through the bloodstream.

Table 1. Bacterial Infections of the Urinary Tract Disease Pathogen Signs and Symptoms Transmission Diagnostic Tests Antimicrobial Drugs Cystitis Escherichia coli , Enterococcus faecalis , Streptococcus agalactiae , Klebsiella pneumoniae , Staphylococcus saprophyticus , others Dysuria, pyuria, hematuria, and bladder pain; most common in females due to the shorter urethra and abundant normal vaginal microbiota Nontransmissible; opportunistic infections occur when fecal bacteria are introduced to urinary tract or when normal urination or immune function is impaired Urine dipstick, urine culture for confirmation Fluoroquinolones, nitrofurantoin, cephalosporins, trimethoprim, sulfamethoxazole Leptospirosis Leptospira spp.

Fever, headache, chills, vomiting, diarrhea, rash, muscular pain; in disseminated infections, may cause jaundice, pulmonary hemorrhaging, meningitis From animals to humans via contact with urine or body fluids PCR, ELISA, slide agglutination, indirect immunofluorescence Doxycycline, amoxicillin, ampicillin, erythromycin, penicillin Nongonococcal urethritis NGU Chlamydia trachomatis , Mycoplasma genitalium , Mycoplasma hominis , Ureaplasma urealyticum Mild or asymptomatic; may cause purulent discharge and dysuria Transmitted sexually or from mother to neonate during birth Urethral swabs and urine culture, PCR, NAAT Azithromycin, doxycycline, erythromycin, fluoroquinolones Pyelonephritis, glomerulonephritis E.

Key Concepts and Summary Bacterial cystitis is commonly caused by fecal bacteria such as E. Pyelonephritis is a serious kidney infection that is often caused by bacteria that travel from infections elsewhere in the urinary tract and may cause systemic complications.

Leptospirosis is a bacterial infection of the kidney that can be transmitted by exposure to infected animal urine, especially in contaminated water. It is more common in tropical than in temperate climates. Nongonococcal urethritis NGU is commonly caused by C. Diagnosis and treatment for bacterial urinary tract infections varies. Urinalysis e. Broad-spectrum antibiotics are typically used.

Tests to detect nitrites and leukocyte esterase have become part of a routine urinalysis. Most species of bacteria that colonize in the urine cause nitrates, which are derived from dietary metabolites, to be converted to nitrites. In healthy people, both the urinary nitrite test and the leukocyte esterase LE tests are negative. A negative nitrite test does not necessarily mean that the urine is free of all bacteria, particularly if there are clinical symptoms, because some bacteria do not produce nitrites.

UTIs may cause preterm labor or low birth weight. The most likely cause of nitrites in urine is a UTIs. Most UTIs, especially those in the bladder and urethra, are easy to treat and will clear up within a week of taking antibiotics. If left untreated, a UTI in the lower tract can spread to the kidneys and cause more severe complications.

In this article, we take a closer look at how safe and effective baking soda is for treating urinary tract infections, otherwise known as UTIs. Learn about nine ways to make yourself pee when you are unable to go. We also look at when someone might need to induce urination, and when to seek…. A kidney infection, or renal infection, happens when bacteria infecting the bladder or urethra spread to at least one of the kidneys.

In most cases…. Learn all about urinary tract infections in men, which are less frequent but can be more serious than UTIs in women. We look at symptoms and…. What does having nitrites in urine mean? Medically reviewed by Carissa Stephens, R. What are nitrites?



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