PMID: 8945021Nov 1, 1996Paper

New integrated sensor pacemaker: comparison of rate responses between an integrated minute ventilation and activity sensor and single sensor modes during exercise and daily activities and nonphysiological interference

Pacing and Clinical Electrophysiology : PACE
S K LeungZ Leung

Abstract

A dual sensor DDDR pacemaker (DX2 Model 7970, Medtronic Inc.) has integrated the rate response of minute ventilation (MV) and activity (ACT) sensors. False rate acceleration by the ACT (constrained upper rate) and MV (cross-checked by ACT) is reduced. We examined the rate response profile and rate kinetics of the automatically optimized integrated sensor by comparing with the projected rate response of ACT and MV sensors alone in nine patients. After 1 month of sensor optimization using rate profile optimization (RPO), patients underwent maximal and submaximal treadmill exercises and performed activities of daily living (ADL). The integrated sensor mode gave a faster speed of rate response with a shorter delay time, time to 50% rate response and time to 90% of rate response compared to the MV sensor during hall walk (0.37 +/- 0.08, 0.7 +/- 0.09, 1.43 +/- 0.19 vs 1.11 +/- 0.1, 1.75 +/- 0.14, 2.91 +/- 0.17 min; P < 0.05). The average maximal sensor rates were significantly more proportional for the integrated sensor mode compared with either the ACT or MV mode. There was no significant difference in both the maximal pacing rate among the three sensor modes during maximal exercise and the rate decay during recovery. During interfe...Continue Reading

References

Oct 1, 1990·Pacing and Clinical Electrophysiology : PACE·C P LauW H Leung
Feb 1, 1988·Pacing and Clinical Electrophysiology : PACE·C P LauA J Camm
Jun 1, 1988·Pacing and Clinical Electrophysiology : PACE·C P LauA J Camm
Feb 1, 1989·Pacing and Clinical Electrophysiology : PACE·C P LauA J Camm
May 1, 1989·Pacing and Clinical Electrophysiology : PACE·R NordlanderS K Pehrsson
Apr 1, 1989·The American Journal of Cardiology·C P LauA J Camm
May 1, 1983·Pacing and Clinical Electrophysiology : PACE·L FananapazirP Monks
Jul 1, 1993·Pacing and Clinical Electrophysiology : PACE·R CowellA J Camm
Dec 1, 1994·Pacing and Clinical Electrophysiology : PACE·C P Lau, S K Leung
Oct 1, 1995·Pacing and Clinical Electrophysiology : PACE·G N KayS M Dailey

❮ Previous
Next ❯

Citations

Aug 1, 1997·Clinical Cardiology·S S Barold, H S Barold
Jan 24, 2002·Medical & Biological Engineering & Computing·J W ShinY R Yoon
Nov 21, 2000·The American Journal of Cardiology·C W Israel, S H Hohnloser
Jan 31, 2006·Pacing and Clinical Electrophysiology : PACE·Luigi PadelettiS Serge Barold
May 3, 2006·Pacing and Clinical Electrophysiology : PACE·Jörg NothroffReiner Buchhorn
Mar 10, 2000·Cardiology Clinics·S K Leung, C P Lau
Mar 1, 1997·Pacing and Clinical Electrophysiology : PACE·S S Barold, J Clémenty

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.