4.3 Article

Transient Hiatal Separation During Straight Leg Raise Can Predict Reflux Burden in Gastroesophageal Reflux Disease Patients With Ineffective Esophageal Motility

Journal

JOURNAL OF NEUROGASTROENTEROLOGY AND MOTILITY
Volume 28, Issue 4, Pages 589-598

Publisher

KOREAN SOC NEUROGASTROENTEROLOGY & MOTILITY
DOI: 10.5056/jnm21189

Keywords

Esophageal sphincter; lower; Hernia; hiatal; Leg; Manometry

Funding

  1. Ministry of Science and Tech- nology, Taiwan
  2. [MOST 109-2314-B-303-012-MY2]

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This study aimed to assess the value of transient hiatal separation during SLR in reflux patients, and found that in patients with ineffective esophageal motility, transient hiatal separation during SLR was associated with higher total acid exposure time, DeMeester scores, total acid reflux events, and longest acid reflux episodes.
Background/Aims Straight leg raise (SLR) can be utilized to evaluate the integrity of the esophagogastric junction during high-resolution manometry (HRM). We aim to assess the value of transient hiatal separation during SLR in symptomatic reflux patients.Methods Consecutive reflux patients undergoing esophageal HRM and pH monitoring were included. Transient hiatal separation was defined by a >= 1 cm separation between the lower esophageal sphincter and crural diaphragm during SLR. We compared esophageal motor patterns and reflux monitoring parameters between patients with normal, transiently abnormal and consistently abnormal esophagogastric junction morphology during SLR.Results Of 85 (56.3% female, mean age: 46.7 +/- 12.3 years) completed SLR, esophagogastric junction morphology was normal in 31 (36.5%), transient hiatal separation in 19 (22.3%), and consistently hiatal hernia in 35 (41.2%). The values of total acid exposure time (P = 0.016), longest acid reflux episodes (P = 0.024), and DeMeester scores (P = 0.016) were higher in hiatal hernia compared to patients with non-transient hiatal separation, but there were no differences between those with and without transient hiatal separation. Within ineffective esophageal motility, the presence of transient hiatal separation during SLR significantly associated with a higher total acid exposure time (P = 0.014), higher DeMeester scores (P = 0.019), higher total acid reflux events (P = 0.037), and higher longest acid reflux episodes (P = 0.006).Conclusion Our work suggests that SLR may have value as a provocative test during HRM, and future outcome studies are warranted to elucidate the clinical relevance of motor abnormalities depicted from SLR. (J Neurogastroenterol Motil 2022;28:589-598)

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