Podcast #295: UTI

Podcast #295: UTI

Author: Sam Killian, M.D.

Educational Pearls

  • Traditionally, UTI diagnosis has been dependent on urine culture, urinalysis and clinical symptoms. But a recent study casts some doubt on the utility of urine cultures.
  • A study in the Journal of Clinical Microbiology did urine cultures and E. coli PCR in 220 women with UTI symptoms and 86 women without UTI symptoms.
  • In the symptomatic women, 67% had positive E. Coli PCR and 98% had a pathogenic bacteria in their urine culture.
  • In the asymptomatic women, 10% had positive E. coli PCR and/or urine culture.
  • Therefore, this study suggests that urine culture may be of limited utility, since symptoms alone seemed to predict bacteriuria.

References: Burd EM, Kehl KS. A Critical Appraisal of the Role of the Clinical Microbiology Laboratory in the Diagnosis of Urinary Tract Infections. Journal of Clinical Microbiology. 2011;49(9 Supplement). doi:10.1128/jcm.00788-11.

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Podcast #293: Transient Global Amnesia

Podcast #293: Transient Global Amnesia

Author: Sam Killian, M.D. Educational Pearls Transient global amnesia is a paroxysmal, transient memory issue. Remote and immediate memory is preserved, but new memories cannot be made. Patients will...

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Podcast #292: Hypercalcemia

Podcast #292: Hypercalcemia

Author: John Winkler, M.D. Educational Pearls Normally, the parathyroid is the master regulator of serum Ca levels. It secretes PTH, which stimulates calcium uptake from the bone and gut. Causes of ...

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Podcast #291: Cincinnati Stroke Scale

Podcast #291: Cincinnati Stroke Scale

Author: Nick Hatch, M.D. Educational Pearls The Cincinnati Stroke Scale uses 3 measures to screen for ischemic stroke. The measures are: facial asymmetry, speech quality and arm drift. This scale is ...

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Podcast #290: The Biochemistry of DKA

Podcast #290: The Biochemistry of DKA

Author: Dave Rosenberg, M.D. Educational Pearls DKA commonly causes hyperkalemia, leading to peaked T-waves on ECG. However, DKA causes hypokalemia at the same time. In DKA, glucose cannot be taken i...

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Podcast #289: Cannabinoid Hyperemesis

Podcast #289: Cannabinoid Hyperemesis

Author: Dylan Luyten, M.D. Educational Pearls Cannabinoid Hyperemesis syndrome is a relatively new diagnosis that presents with vomiting and abdominal pain without a clear etiology in the setting of ...

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Podcast #288: Diarrhea

Podcast #288: Diarrhea

Author: Peter Bakes, M.D. Educational Pearls Chronic diarrhea is defined as 3 or more loose, watery stools lasting more than 2-3 weeks. Look for clues in the history, including travel (could suggest...

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Podcast #287: Sepsis Bundles

Podcast #287: Sepsis Bundles

Author: Aaron Lessen, M.D. Educational Pearls Treatment "bundles" are a popular approach to the rapid resuscitation of septic patients. A recent study in New York, where sepsis bundles are mandatory,...

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Podcast #286: Coronary Vascular Conditions that aren't STEMI

Podcast #286: Coronary Vascular Conditions that aren't STEMI

Author: Don Stader, M.D. Educational Pearls While we usually associate the coronary vasculature with STEMIs, there are other pathologies that can affect the heart's blood supply. Kounis syndrome: an ...

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