Impedance Planimetry

2012 ◽  
pp. 329-337 ◽  
Author(s):  
Johannes Lenglinger
Keyword(s):  
Impedance Planimetry

scholarly journals Impedance planimetry values for predicting clinical response following peroral endoscopic myotomy

Endoscopy ◽  
2020 ◽  
Author(s):  
Robert A. Moran ◽  
Olaya I. Brewer Gutierrez ◽  
Burkhard Rahden ◽  
Kenneth Chang ◽  
Michael Ujiki ◽  
...  
Keyword(s):  
Clinical Response ◽  
Predictive Ability ◽  
Peroral Endoscopic Myotomy ◽  
Predictive Capacity ◽  
Multicenter Cohort Study ◽  
Cross Sectional ◽  
Impedance Planimetry ◽  
Percent Change ◽  
Eckardt Score ◽  
Endoscopic Myotomy

Abstract Background There is growing interest in developing impedance planimetry as a tool to enhance the clinical outcomes for endoscopic and surgical management of achalasia. The primary aim of this study was to determine whether impedance planimetry measurements can predict clinical response and reflux following peroral endoscopic myotomy (POEM). Methods A multicenter cohort study of patients with achalasia undergoing POEM was established from prospective databases and retrospective chart reviews. Patients who underwent impedance planimetry before and after POEM were included. Clinical response was defined as an Eckardt score of ≤ 3. Tenfold cross-validated area under curve (AUC) values were established for the different impedance planimetry measurements associated with clinical response and reflux development. Results Of the 290 patients included, 91.7 % (266/290) had a clinical response and 39.4 % (108/274) developed reflux following POEM. The most predictive impedance planimetry measurements for a clinical response were: percent change in cross-sectional area (%ΔCSA) and percent change in distensibility index (%ΔDI), with AUCs of 0.75 and 0.73, respectively. Optimal cutoff values for %ΔCSA and %ΔDI to determine a clinical response were a change of 360 % and 272 %, respectively. Impedance planimetry values were much poorer at predicting post-POEM reflux, with AUCs ranging from 0.40 to 0.62. Conclusion Percent change in CSA and distensibility index were the most predictive measures of a clinical response, with a moderate predictive ability. Impedance planimetry values for predicting reflux following POEM showed weak predictive capacity.

Impedance planimetry (EndoFLIP) measurements persist long term after anti-reflux surgery

Surgery ◽  
2021 ◽  
Author(s):  
Hoover Wu ◽  
Mikhail Attaar ◽  
Harry J. Wong ◽  
Michelle Campbell ◽  
Kristine Kuchta ◽  
...  
Keyword(s):  
Impedance Planimetry

Identification of the biomechanical factors associated with the perception of distension in the human esophagus

2002 ◽  
Vol 282 (4) ◽  
pp. G683-G689 ◽  
Author(s):  
J. D. Barlow ◽  
H. Gregersen ◽  
D. G. Thompson
Keyword(s):  
Cross Sectional Area ◽  
Sectional Area ◽  
Limited Information ◽  
Butyl Bromide ◽  
Cross Sectional ◽  
Impedance Planimetry ◽  
Sensory Responses ◽  
Human Esophagus ◽  
Biomechanical Factors ◽  
The Relationship

Current techniques used to investigate the mechanisms responsible for the sensory responses to distension of the human esophagus provide limited information because the degree of circumferential stretch required to determine tension can only be inferred. We used impedance planimetry to measure the cross-sectional area during esophageal distension to ascertain the degree of stretch and tension that initiated motor and sensory responses. Hyoscine- N-butyl bromide (HBB), a cholinergic muscarinic receptor blocker, was also used to alter esophageal tension during distension. Motor activity was initiated at a lower degree of stretch and tension than that which initiated sensory awareness; both increased directly with increasing distension. HBB reduced both esophageal motility and tension during distension without altering the relationship between sensation intensity and cross-sectional area. Esophageal stretch, rather than tension, thus appears to be the major factor influencing sensory responses to esophageal distension.

Impedance Planimetry (Endoflip™) Shows That Length of Narrowing After Fundoplication Does Not Impact Dysphagia

2021 ◽  
Author(s):  
Hoover Wu ◽  
Mikhail Attaar ◽  
Harry J. Wong ◽  
Michelle Campbell ◽  
Kristine Kuchta ◽  
...  
Keyword(s):  
Impedance Planimetry

Impedance planimetry (EndoFLIP™) reveals changes in gastroesophageal junction compliance during fundoplication

2022 ◽  
Author(s):  
Hoover Wu ◽  
Mikhail Attaar ◽  
Harry J. Wong ◽  
Michelle Campbell ◽  
Kristine Kuchta ◽  
...  
Keyword(s):  
Gastroesophageal Junction ◽  
Impedance Planimetry

Impedance Planimetry: Clinical Impedance Planimetry

2006 ◽  
pp. 105-113
Author(s):  
Graeme S. Duthie ◽  
Angela B. Gardiner
Keyword(s):  
Impedance Planimetry

scholarly journals Esophageal peroral endoscopic myotomy (POEM) for treatment of esophagogastric junction outflow obstruction: results from the first prospective trial

2020 ◽  
Vol 08 (09) ◽  
pp. E1137-E1143
Author(s):  
Yervant Ichkhanian ◽  
Omid Sanaei ◽  
Andrew Canakis ◽  
Kia Vosoughi ◽  
Erik Almazan ◽  
...  
Keyword(s):  
Esophagogastric Junction ◽  
Clinical Success ◽  
Short Form ◽  
Tertiary Care ◽  
Prospective Trial ◽  
Peroral Endoscopic Myotomy ◽  
Outflow Obstruction ◽  
Impedance Planimetry ◽  
Sf 36 ◽  
Endoscopic Myotomy

Abstract Background and study aims Esophagogastric junction outflow obstruction (EGJOO) is a rare esophageal dysmotility disease that is characterized by elevated integrated relaxation pressuse (IRP) with evidence of preserved peristalsis. The role of peroral endoscopic myotomy (POEM) in management of EGJOO is currently unknown. Patients and methods This is a prospective trial conducted in a single US tertiary care center from June 2015 to June 2019. Symptomatic patients, diagnosed with EGJOO on both HRM and endoluminal functional lumen imaging probe (EndoFLIP), who were eligible for POEM were recruited. Primary outcome was clinical success, defined as Eckardt score (ES) ≤ 3, at 6 months post-POEM. Other outcomes included dysphagia score, quality of life as measured by 36-item Short Form health survey scales (SF-36), post-POEM HRM, EndoFLIP, and pH measurements, and adverse events. Results A total of 15 patients (51.8 yr. 9 F) with EGJOO underwent POEM. Pre-POEM mean IRP on HRM and Distensibility index (DI) on EndoFLIP were 24.3 ± 2.2 mmHg and 1.1 ± 0.6 mm2/mmHg, respectively. Clinical success was achieved in 93 % at 6 months post-POEM. There was significant decrease in IRP (-17.6 mmHg) post-POEM. There was significant improvement at 6 months in two of the SF-36 subscales. Ten patients underwent post-POEM pH testing, seven of whom had abnormal DeMeester score. Seven patients underwent EGD evaluation revealing esophagitis in five (2 Los Angeles grade A and 3 grade B). Conclusions POEM offers a high clinical success rate for patients with EGJOO confirmed by impedance planimetry.

Sign in / Sign up

Export Citation Format

Share Document