Examkin

Soru

Zorluk: ZorGastroenterology and Hepatology

Match each clinical presentation of dysphagia and chest pain to its most characteristic high-resolution esophageal manometry finding.

  • A 41-year-old woman with a history of recurrent digital vasospasm in cold weather presents with worsening heartburn and difficulty swallowing solid foods. Physical examination reveals taut, thickened skin over her fingers.Absent esophageal peristalsis and diminished lower esophageal sphincter resting pressure
  • A 29-year-old man reports a 6-month history of difficulty swallowing both solids and liquids. He frequently regurgitates undigested food, especially at night, and has experienced a 4-kg (8.8-lb) weight loss.Absent esophageal peristalsis and incomplete lower esophageal sphincter relaxation
  • A 52-year-old woman presents with episodes of squeezing central chest pain that often radiate to her back, accompanied by intermittent dysphagia. A cardiac stress test is entirely normal.Premature, simultaneous, uncoordinated contractions with normal lower esophageal sphincter relaxation
  • A 64-year-old man undergoes evaluation for severe, episodic dysphagia and retrosternal pain. Upper endoscopy shows no structural abnormalities, and a barium swallow demonstrates normally coordinated but exceptionally forceful contractions.High-amplitude, prolonged, coordinated peristaltic contractions with normal lower esophageal sphincter relaxation

Cevap

Systemic sclerosis pairs with absent peristalsis and diminished LES pressure; Achalasia pairs with absent peristalsis and incomplete LES relaxation; Diffuse esophageal spasm pairs with premature simultaneous contractions; Hypercontractile esophagus pairs with high-amplitude coordinated contractions.
Esophageal motility disorders frequently present with overlapping symptoms of dysphagia, regurgitation, and non-cardiac chest pain. High-resolution manometry is the gold standard for differentiating these conditions based on two primary metrics: peristaltic integrity (coordination and amplitude) and lower esophageal sphincter (LES) dynamics (resting pressure and relaxation). Systemic sclerosis causes smooth muscle fibrosis leading to a weak LES; achalasia is caused by neuronal degeneration leading to a non-relaxing LES; diffuse esophageal spasm causes uncoordinated contractions; and hypercontractile esophagus causes excessively strong but coordinated contractions.

Adım Adım Çözüm

1
Diagnose the underlying condition for each clinical vignette based on the provided symptoms and physical findings.
The vignettes represent systemic sclerosis (CREST syndrome features), achalasia, diffuse esophageal spasm (DES), and hypercontractile esophagus, respectively.
Accurate clinical diagnosis is a prerequisite for anticipating the expected diagnostic test findings on high-resolution manometry.
2
Correlate each diagnosed motility disorder with its specific pathophysiologic mechanism and manometric pattern.
Systemic sclerosis = hypotensive LES + aperistalsis. Achalasia = failure of LES relaxation + aperistalsis. DES = premature simultaneous contractions. Hypercontractile esophagus = high-amplitude peristaltic contractions.
High-resolution manometry directly measures the specific neuromuscular deficits responsible for each condition's symptoms.

Anahtar Kavram

Pathophysiology and manometric findings of esophageal motility disorders
Bu soruyu puanla

Konular

Gastroenterology and Hepatology

Bu konudan daha fazla soru