Premium
Correlation of Impedance Minute Ventilation with Measured Minute Ventilation in a Rate Responsive Pacemaker
Author(s) -
COLE CHRISTOPHER R.,
JENSEN DONALD N.,
CHO YONG,
PORTZLINE GERALD,
CANDINAS RETO,
DURU FIRAT,
ADLER STUART,
NELSON LINDA,
CONDIE CATHERINE,
WILKOFF BRUCE L.
Publication year - 2001
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1046/j.1460-9592.2001.00989.x
Subject(s) - medicine , ventilation (architecture) , respiratory minute volume , treadmill , cardiology , anesthesia , respiratory system , mechanical engineering , engineering
COLE, C.R., et al. : Correlation of Impedance Minute Ventilation with Measured Minute Ventilation in a Rate Responsive Pacemaker. 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 (V E ) 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 (V E , 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.