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Cystinuria
Educational only: videos on MedicalVideos.com are for general information and are not medical advice. Always consult your own doctor about your health.
Cystinuria is a condition characterized by the buildup of the amino acid cystine, a building block of most proteins, in the kidneys and bladder. As the kidneys filter blood to create urine, cystine is normally absorbed back into the bloodstream. People with cystinuria cannot properly reabsorb cystine into their bloodstream, so the amino acid accumulates in their urine. As urine becomes more concentrated in the kidneys, the excess cystine forms crystals. Larger crystals become stones that may lodge in the kidneys or in the bladder. Sometimes cystine crystals combine with calcium molecules in the kidneys to form large stones. These crystals and stones can create blockages in the urinary tract and reduce the ability of the kidneys to eliminate waste through urine. The stones also provide sites where bacteria may cause infections.
This video in 30 seconds
This video explains cystinuria, a condition characterized by buildup of the amino acid cystine in the kidneys and bladder. It describes how cystine is normally absorbed back into the bloodstream as kidneys filter blood, but in cystinuria accumulates in urine, forms crystals as urine becomes concentrated, and larger crystals become stones that may lodge in the kidneys or bladder, creating blockages, reducing elimination of waste and providing sites for bacterial infection.
Key points
- Explains cystinuria as buildup of cystine in the kidneys and bladder
- Describes failure to reabsorb cystine into the bloodstream
- Covers cystine crystals and stones forming in concentrated urine
- Covers blockages of the urinary tract and sites for bacterial infection
Video Overview
This video presents “Cystinuria” — Cystinuria is a condition characterized by the buildup of the amino acid cystine, a building block of most proteins, in the kidneys and bladder. As the kidneys filter blood to create urine, cystine is normally absorbed back into the. Whether you are preparing for a procedure, studying the technique, or learning how a condition is assessed, the recording shows the process as it is performed in practice.
From our Pediatrics collection: Pediatric videos: child health, newborn care, common childhood illnesses and pediatric procedures explained for parents, students and clinicians. Browse all Pediatrics videos →
Educational content only — not a substitute for professional medical advice.
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