Abstract
The anaerobic threshold (AT) has proved to be a useful parameter in the evaluation of cardiac function in patients with rate responsive (RR) pacemakers (PM). The AT is easily reproducible and is not influenced by emotional aspects of both the patient and the physician, moreover being submaximal it is easy to achieve. The aim of our study was to compare the data from three RRPM driven by different sensors in order to determine the correct programme. We studied 24 patients (pts) (13 M, 11 F, mean age 56 ± 3 years), 10 with Medtronic Activitrax I (A), 8 with Telectronics Meta MV (M), 6 with Medico Italia Phymos MPT (P) devices, implanted for atrioventricular (AV) block. Patients underwent symptom limited bicycle ergometer stress tests at two different pacemaker settings: 1) fixed rate at 70 bpm, 2) increasing rate up to 85% of maximum heart rate achievable for each patient, with steps of 10 W/min. Gas exchange data were continuously collected using an automated system (Medical Graphics System 2001) based on Myers and Froelicher's method. Heart rate changed in pts with A: 1) 70 bpm <2) 102 ± 5 bpm (p <0.05); in pts with M: 1) 70 bpm <2) 121 + 6 bpm (p <0.001);in pts with P: 1) 70 bpm <2) 132 ± 5 bpm (p <0.001); the exercise time changed in pts with A: 1) 3.9 ± 1.5 min <2) 7.1 ± 1.5 min (p <0.05); in pts with M: 1) 4.0 ± 1.0 min <2) 9.8 ± 2.5 min (p <0.001); in pts with P: 1) 5.1 ± 2.0 min <2) 12.0 ± 2.6 min (p <0.001); the AT changed in pts with A: 1) 8.0 ± 1.0 ml/kg/min <2) 10.3 ± 1.0 ml/kg/min (p <0.05); in pts with M: 1) 9.1 ± 1.0 ml/kg/min <2) 14.3 ± 0.6 ml/kg/min (p <0.001); in pts with P: 1) 9.0 ± 0.6 ml/kg/min <2) 15.4 ± 0.6 ml/kg/min (p <0.001). Cardiopulmonary exercise testing proved to be a useful noninvasive method for evaluation of cardiac performance in rate adaptive paced patients.
| Original language | English |
|---|---|
| Pages (from-to) | 27-33 |
| Number of pages | 7 |
| Journal | European Journal of Cardiac Pacing and Electrophysiology |
| Volume | 4 |
| Issue number | 1 |
| Publication status | Published - 1994 |
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Keywords
- Anaerobic threshold
- Pacemakers
- Rate responsive
- VDD
- VVIR
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
Cite this
UTILITE DE L'EVALUATION DU POINT D'ANAEROBIE POUR ETUDIER LA FONCTION CARDIAQUE DES PATIENTS IMPLANTES AVEC UN STIMULATEUR A FREQUENCE ASSERVIE. / Santomauro, M.; Damiano, M.; Pappone, C.; Romano, M.; Telese, M.; Lamberti, E.; Condorelli, M.; Chiariello, M.
In: European Journal of Cardiac Pacing and Electrophysiology, Vol. 4, No. 1, 1994, p. 27-33.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - UTILITE DE L'EVALUATION DU POINT D'ANAEROBIE POUR ETUDIER LA FONCTION CARDIAQUE DES PATIENTS IMPLANTES AVEC UN STIMULATEUR A FREQUENCE ASSERVIE
AU - Santomauro, M.
AU - Damiano, M.
AU - Pappone, C.
AU - Romano, M.
AU - Telese, M.
AU - Lamberti, E.
AU - Condorelli, M.
AU - Chiariello, M.
PY - 1994
Y1 - 1994
N2 - The anaerobic threshold (AT) has proved to be a useful parameter in the evaluation of cardiac function in patients with rate responsive (RR) pacemakers (PM). The AT is easily reproducible and is not influenced by emotional aspects of both the patient and the physician, moreover being submaximal it is easy to achieve. The aim of our study was to compare the data from three RRPM driven by different sensors in order to determine the correct programme. We studied 24 patients (pts) (13 M, 11 F, mean age 56 ± 3 years), 10 with Medtronic Activitrax I (A), 8 with Telectronics Meta MV (M), 6 with Medico Italia Phymos MPT (P) devices, implanted for atrioventricular (AV) block. Patients underwent symptom limited bicycle ergometer stress tests at two different pacemaker settings: 1) fixed rate at 70 bpm, 2) increasing rate up to 85% of maximum heart rate achievable for each patient, with steps of 10 W/min. Gas exchange data were continuously collected using an automated system (Medical Graphics System 2001) based on Myers and Froelicher's method. Heart rate changed in pts with A: 1) 70 bpm <2) 102 ± 5 bpm (p <0.05); in pts with M: 1) 70 bpm <2) 121 + 6 bpm (p <0.001);in pts with P: 1) 70 bpm <2) 132 ± 5 bpm (p <0.001); the exercise time changed in pts with A: 1) 3.9 ± 1.5 min <2) 7.1 ± 1.5 min (p <0.05); in pts with M: 1) 4.0 ± 1.0 min <2) 9.8 ± 2.5 min (p <0.001); in pts with P: 1) 5.1 ± 2.0 min <2) 12.0 ± 2.6 min (p <0.001); the AT changed in pts with A: 1) 8.0 ± 1.0 ml/kg/min <2) 10.3 ± 1.0 ml/kg/min (p <0.05); in pts with M: 1) 9.1 ± 1.0 ml/kg/min <2) 14.3 ± 0.6 ml/kg/min (p <0.001); in pts with P: 1) 9.0 ± 0.6 ml/kg/min <2) 15.4 ± 0.6 ml/kg/min (p <0.001). Cardiopulmonary exercise testing proved to be a useful noninvasive method for evaluation of cardiac performance in rate adaptive paced patients.
AB - The anaerobic threshold (AT) has proved to be a useful parameter in the evaluation of cardiac function in patients with rate responsive (RR) pacemakers (PM). The AT is easily reproducible and is not influenced by emotional aspects of both the patient and the physician, moreover being submaximal it is easy to achieve. The aim of our study was to compare the data from three RRPM driven by different sensors in order to determine the correct programme. We studied 24 patients (pts) (13 M, 11 F, mean age 56 ± 3 years), 10 with Medtronic Activitrax I (A), 8 with Telectronics Meta MV (M), 6 with Medico Italia Phymos MPT (P) devices, implanted for atrioventricular (AV) block. Patients underwent symptom limited bicycle ergometer stress tests at two different pacemaker settings: 1) fixed rate at 70 bpm, 2) increasing rate up to 85% of maximum heart rate achievable for each patient, with steps of 10 W/min. Gas exchange data were continuously collected using an automated system (Medical Graphics System 2001) based on Myers and Froelicher's method. Heart rate changed in pts with A: 1) 70 bpm <2) 102 ± 5 bpm (p <0.05); in pts with M: 1) 70 bpm <2) 121 + 6 bpm (p <0.001);in pts with P: 1) 70 bpm <2) 132 ± 5 bpm (p <0.001); the exercise time changed in pts with A: 1) 3.9 ± 1.5 min <2) 7.1 ± 1.5 min (p <0.05); in pts with M: 1) 4.0 ± 1.0 min <2) 9.8 ± 2.5 min (p <0.001); in pts with P: 1) 5.1 ± 2.0 min <2) 12.0 ± 2.6 min (p <0.001); the AT changed in pts with A: 1) 8.0 ± 1.0 ml/kg/min <2) 10.3 ± 1.0 ml/kg/min (p <0.05); in pts with M: 1) 9.1 ± 1.0 ml/kg/min <2) 14.3 ± 0.6 ml/kg/min (p <0.001); in pts with P: 1) 9.0 ± 0.6 ml/kg/min <2) 15.4 ± 0.6 ml/kg/min (p <0.001). Cardiopulmonary exercise testing proved to be a useful noninvasive method for evaluation of cardiac performance in rate adaptive paced patients.
KW - Anaerobic threshold
KW - Pacemakers
KW - Rate responsive
KW - VDD
KW - VVIR
UR - http://www.scopus.com/inward/record.url?scp=0028264477&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028264477&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0028264477
VL - 4
SP - 27
EP - 33
JO - European Journal of Cardiac Pacing and Electrophysiology
JF - European Journal of Cardiac Pacing and Electrophysiology
SN - 0939-6780
IS - 1
ER -