Causes and mechanisms of development
Motor disorders are based on two processes: alteration of the physicochemical properties of bile due to hepatocyte dysfunction (dyscholia) and impaired neurogenic regulation of duct tone.
The disease is polyetiological. Its development can be triggered by:
- Neurological factors: autonomic dysfunction, neuroses.
- Diet and allergies: food allergies, irregular meals, nutritional quality errors.
- Infections and parasites: helminthic invasions, past viral hepatitis, bacterial infections (often Escherichia coli).
- Concomitant diseases: obesity, diabetes mellitus, chronic gastrointestinal pathologies.
- Genetics and anatomy: heredity, structural anomalies of the bile ducts.
Classification
Dysfunctions are divided according to three main criteria:
- By cause:
- Primary: initial motility regulation disorder.
- Secondary: reflex response to pathology of other organs.
- By localization:
- Gallbladder dysfunction.
- Sphincter of Oddi dysfunction.
- By type of motility disorder:
- Gallbladder: hyperfunction (increased contraction) or hypofunction (decreased contractility).
- Sphincter of Oddi: spasm or tone insufficiency.
Clinical presentation
Symptoms depend on the type of motility disorder. It is important to distinguish manifestations in hyper- and hypokinetic forms:
| Morphology | Character of pain | Dyspepsia | Features |
|---|---|---|---|
| Hyperkinetic | Acute, paroxysmal (stabbing, cutting) | Nausea, vomiting, eructation | Presence of pain-free intervals between attacks |
| Hypokinetic | Dull, aching, pressing, feeling of heaviness | Bitterness in the mouth, nausea | Constant pain, which may intensify. Positive gallbladder signs |
In addition to local symptoms, general autonomic manifestations are typical: fatigue, hyperhidrosis, tachycardia, irritability. Deterioration is often associated with stress.
Diagnostics and treatment
In pediatrics, invasive methods (such as sphincter of Oddi manometry) are not used. The main routine method is ultrasound with a choleretic breakfast. Normally, the gallbladder contracts by 50%. In the hypertonic form — by more than 50%, in the hypotonic form — by less than 40%.
Therapy depends on the form of dysfunction:
- Hypotonic form: diet with foods that have a natural choleretic effect (eggs, vegetable fats), choleretics, cholekinetics, neurotropic stimulants, tubages, room-temperature mineral water.
- Hypertonic form: sparing diet with fat restriction, antispasmodics, sedatives, warm thermal procedures, warm non-carbonated mineral water.
To memorize the forms: Hyper is "acute, fast, and strong" (acute pain, strong gallbladder contraction). Hypo is "dull, slow, and weak" (dull heaviness, weak contraction).
Class and exam questions
What is the difference between primary and secondary dysfunction?
Primary dysfunction occurs due to a failure in the neurohumoral regulation of the biliary system itself. Secondary dysfunction is a reflex response to pre-existing diseases of other abdominal organs.
How is gallbladder motor function assessed by ultrasound?
An ultrasound with a choleretic breakfast is performed. Normally, the gallbladder should contract by approximately 50%. Contraction of less than 40% indicates hypotonia, and more than 50% indicates hypertonia.
Which drugs are used to stimulate gallbladder contraction?
Cholekinetics are used — drugs that stimulate gallbladder contraction and the release of bile into the intestine.
What else to study on this topic
- Pathogenesis of dyscholia and calculus formation
- Specific gallbladder signs (Murphy, Ortner, Boas)
- Sphincter of Oddi dysfunction: clinical features
- Principles of hepatobiliary scintigraphy
- Dymov's duodenal tubage procedure
Master the entire topic in the Pediatrics course
This is a summary. The course covers everything tested in classes and exams.
- Complete study guide on "Biliary Tract Dysfunctions" and 3,738 more pages of the subject
- Assignments and quizzes after every topic — just like in a colloquium
- AI tutor answers questions on the topic anytime
- 71 video lessons on the subject
Other topics in "Chapter 7. Digestive System Diseases"
Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.