On an urine dipstick for suspected UTI, it is not uncommon to find positive nitrites. Nitrates are normally excreted by the kidney, however nitrites are not normally found in urine. Nitrites will be found when nitrate reductase organisms are present in the patient’s urine. These organisms are gram-negative bacteria including E. coli and other bacteria in the family Enterobacteriaceae (i.e Klebsiella).
NOTE: However, several other common urinary pathogens do not produce nitrites, such as: enterococci, S. saprophyticus, and Pseudomonas!! Therefore negative nitrites DOES NOT RULE OUT BACTERIURIA.
WATCH OUT FOR FALSE (-):
REFERENCES
Though often used synonymously; Trapped Lung and Lung Entrapment technically describe separate entities along the…
It is not clearly understood why patients with pulmonary hypertension (PH) develop pericardial effusions. However,…
The two drugs are not interchangeable nor dose equivalents. Mycophenolate mofetil (Cellcept) is a semi…
Serum Creatinine can be a deceptive surrogate during an acute kidney injury. It may lag…
Macrophage activation syndrome (MAS) is a life-threatening complication of rheumatic diseases (i.e SLE, Juvenile idiopathic…
After creation of a percutaneous tracheotomy site for prolonged ventilation, one of the immediate complications…
This website uses cookies.