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Protocol For Patients With Suspected Acute Porphyria.
F J Castelbón Fernández1, I Solares Fernandez1, E Arranz Canales1
1Grupo CSUR de errores congénitos del metabolismo en el adulto, Hospital Universitario 12 de Octubre, Madrid, España.
Porphyrias are genetic disorders affecting heme synthesis. Acute porphyria crises, marked by severe abdominal pain, show high urinary porphyrin precursors, detectable by the Hoesch test, guiding treatment.
Area of Science:
- Biochemistry
- Genetics
- Internal Medicine
Background:
- Porphyrias are inherited metabolic disorders impacting the heme biosynthetic pathway.
- Accumulation of porphyrin precursors, like delta-aminolaevulinic acid and porphobilinogen, causes neurovisceral crises in acute porphyria.
- Intense abdominal pain is a primary clinical manifestation of acute porphyric crises.
Purpose of the Study:
- To outline the diagnostic and management protocol for acute porphyria.
- To emphasize the role of the Hoesch test in identifying acute porphyric crises.
Main Methods:
- Clinical assessment in emergency settings.
- Identification of urinary porphobilinogen using the Hoesch test.
- Suppression of potential triggers for porphyric crises.
Main Results:
- Elevated urinary levels of porphobilinogen and delta-aminolaevulinic acid are characteristic of acute porphyria crises.
- A negative Hoesch test effectively rules out a current porphyric crisis.
- The Hoesch test provides a simple method for detecting excessive urinary porphobilinogen.
Conclusions:
- The Hoesch test is crucial for suspecting acute porphyria in patients with unexplained abdominal pain.
- Management involves emergency assessment, trigger avoidance, and specific treatments like hemin or glucose overload.
- Prompt diagnosis and treatment are essential for managing acute porphyric crises.
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