Document Detail

Correlation of impedance minute ventilation with measured minute ventilation in a rate responsive pacemaker.
MedLine Citation:
PMID:  11449596     Owner:  NLM     Status:  MEDLINE    
Although rate responsive pacing based on impedance minute ventilation (IMV) is now standard, there is almost no data confirming the relationship between IMV from an implanted pacemaker and measured minute ventilation (VE) during exercise. Nineteen completely paced adults implanted with Medtronic Kappa 400 pacemakers underwent symptom-limited maximal metabolic treadmill testing using a modified Minnesota Pacemaker Response Protocol. Minute ventilation (VE, L/min) was simultaneously measured using the flowmeter of a respiratory metabolic gas analysis system and the transthoracic impedance minute ventilation circuitry of the pacemaker. Correlation coefficients (r) were used to find the best fit line to describe the relationship between the two measurements. Mean (+/- SD) r values for the first, second, and third order polynomial equations and for log and exponential equations were: 0.92 +/- 0.08, 0.94 +/- 0.04, 0.95 +/- 0.04, 0.91 +/- 0.06, and 0.91 +/- 0.07, respectively. None of the r values were statistically different from the first order equation. Transthoracic IMV as measured by the Medtronic Kappa 400 is closely correlated to measured minute ventilation and is represented well by a first order (linear) equation.
C R Cole; D N Jensen; Y Cho; G Portzline; R Candinas; F Duru; S Adler; L Nelson; C Condie; B L Wilkoff
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Publication Detail:
Type:  Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  24     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-07-13     Completed Date:  2002-05-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  989-93     Citation Subset:  IM    
Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44121, USA.
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MeSH Terms
Electric Impedance
Exercise Test
Middle Aged
Pacemaker, Artificial*
Pulmonary Ventilation*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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