What is the most accurate diagnostic test Flashcards
Asthma
- Pulmonary function testing (PFTs)
- In stable patient do it with methacholine which will lead to decrease in FEV1 by > 20% in asthmatic patient
RTA Type I
Infusion of acid into the blood with ammonium chloride (urine pH will remain above 5.5)
RTA Type II
Evaluation of bicarbonate malabsorption by giving bicarbonate and test for urine pH (it will rise after giving the bicarbonate)
RTA IV
Persistently high urine sodium despite sodium-depleted diet; in addition to hyperkalemia
Atheroemboli
Biopsy of the purplish skin lesions
Acute (allergic) Interstitial nephritis (AIN)
Hansel or Wright stain of urine to determine the presence of eosinophils
Renal Papillary Necrosis
CT scan
Urinary Tract Infection (UTI)
Urine culture
Achalasia
Manometry
Esophageal cancer
Endoscopy with biopsy
Diffuse esophageal spasm
Manometry
Nutcracker esophagus
Manometry
Zenker diverticulum
Barium swallow
H. pylori infection
Biopsy
Gastrinoma (Zollinger-Ellison syndrome)
After biopsy (that confirms the presence of ulcers), persistent high gastrin levels despite injecting secretin