| Automated identification of peristaltic pressure waves in oesophageal manometry investigations using the rolling correlation technique. | |
| | |
MedLine Citation:
|
PMID: 19812454 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
We have implemented the technique of rolling correlation coefficient as proposed by Buttfield and Bolton (2005 Real time measurement of RR intervals using a digital signal processor J. Med. Eng. Technol. 29 8-13) for ECG R-wave detection in the detection and timing of oesophageal peristalsis. 43 sequential patients attending for oesophageal manometry were retrospectively reviewed. Two expert reviewers visually assessed each swallow for normality of peristaltic amplitude and propagation speed. Automatic assessment was performed using rolling correlation, maximum amplitude, threshold and maximum gradient techniques of identifying onset of peristalsis. Rolling correlation was comparable with the maximum amplitude technique at identifying peristaltic pressure waves visually identified as present. Rolling correlation was most effective at correctly identifying propagation velocity as normal (698 out of 845 normally propagating waves) and highest correlation with expert visual assessment of percentage abnormal propagation for each patient (R value 0.918). In a sub-group of 11 studies assessed as displaying normal motility, rolling correlation gave lowest variation of propagation speed and highest consistency with visual assessment. The rolling correlation technique is effective and accurate at identifying oesophageal peristalsis and characterizing peristaltic propagation in manometric studies even in the presence of abnormally weak peristalsis and other confounding pressure perturbations. |
| | |
Authors:
|
S Perring; E Jones |
Related Documents
:
|
2313154 - The role of transient internal sphincter relaxation in faecal incontinence? 11774934 - Detection of incomplete lower esophageal sphincter relaxation with conventional point-p... 6468874 - Esophageal contraction pressures are not affected by normal menstrual cycles. 4077794 - Lung volume dependence of esophageal pressure in the neck. |
Publication Detail:
|
Type: Journal Article Date: 2009-10-08 |
Journal Detail:
|
Title: Physiological measurement Volume: 30 ISSN: 1361-6579 ISO Abbreviation: Physiol Meas Publication Date: 2009 Nov |
Date Detail:
|
Created Date: 2009-10-15 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9306921 Medline TA: Physiol Meas Country: England |
Other Details:
|
Languages: eng Pagination: 1241-50 Citation Subset: IM |
Affiliation:
|
Medical Physics Department, Poole Hospital NHS Trust, Longfleet Rd, Poole BH15 2JB, UK. Steve.perring@poole.nhs.uk |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Defining asymmetry in heart rate variability signals using a Poincaré plot.
Next Document: Assessing the blood volume and heart rate responses during haemodialysis in fluid overloaded patient...