An Evaluation of Long‐term Stimulation Thresholds by Measurement of Chronic Strength Duration Curves

JOHN K. HYNES, David Holmes, JOHN MERIDETH, JANE M. TRUSTY

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Successful long‐term cardiac pacemaker therapy requires both reliable generator output and stable, altainable chronic stimulation thresholds. Strength duration curves, which display cardiac stimulalion thresholds as a function of impulse duration, provide needed data to evaluate more thoroughly acute and chronic lead thresholds. We measured chronic strength duration curves at the time of generator replacement in 47 patients with three different types of lead systems of variable geometry and surface area and compared these curves with acute strength duration curves measured at the time of initial lead implantation in 19 patients. We found that strength duration curves have a characteristic shape; however, chronic strength duration curves were shifted upward and to the right of acute strength duration curves, regardless of electrode tip surface area or geometric design. Our data suggest that variable pulse width exceeding 1 ms may not significantly reduce stimulation thresholds.

Original languageEnglish (US)
Pages (from-to)376-379
Number of pages4
JournalPacing and Clinical Electrophysiology
Volume4
Issue number4
DOIs
StatePublished - Jan 1 1981

Fingerprint

Electrodes
Lead
Therapeutics

Keywords

  • chronic strength duration curves
  • pacemaker therapy

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

An Evaluation of Long‐term Stimulation Thresholds by Measurement of Chronic Strength Duration Curves. / HYNES, JOHN K.; Holmes, David; MERIDETH, JOHN; TRUSTY, JANE M.

In: Pacing and Clinical Electrophysiology, Vol. 4, No. 4, 01.01.1981, p. 376-379.

Research output: Contribution to journalArticle

@article{bc15edae9db4437fb7a3a254147b8f83,
title = "An Evaluation of Long‐term Stimulation Thresholds by Measurement of Chronic Strength Duration Curves",
abstract = "Successful long‐term cardiac pacemaker therapy requires both reliable generator output and stable, altainable chronic stimulation thresholds. Strength duration curves, which display cardiac stimulalion thresholds as a function of impulse duration, provide needed data to evaluate more thoroughly acute and chronic lead thresholds. We measured chronic strength duration curves at the time of generator replacement in 47 patients with three different types of lead systems of variable geometry and surface area and compared these curves with acute strength duration curves measured at the time of initial lead implantation in 19 patients. We found that strength duration curves have a characteristic shape; however, chronic strength duration curves were shifted upward and to the right of acute strength duration curves, regardless of electrode tip surface area or geometric design. Our data suggest that variable pulse width exceeding 1 ms may not significantly reduce stimulation thresholds.",
keywords = "chronic strength duration curves, pacemaker therapy",
author = "HYNES, {JOHN K.} and David Holmes and JOHN MERIDETH and TRUSTY, {JANE M.}",
year = "1981",
month = "1",
day = "1",
doi = "10.1111/j.1540-8159.1981.tb03715.x",
language = "English (US)",
volume = "4",
pages = "376--379",
journal = "PACE - Pacing and Clinical Electrophysiology",
issn = "0147-8389",
publisher = "Wiley-Blackwell",
number = "4",

}

TY - JOUR

T1 - An Evaluation of Long‐term Stimulation Thresholds by Measurement of Chronic Strength Duration Curves

AU - HYNES, JOHN K.

AU - Holmes, David

AU - MERIDETH, JOHN

AU - TRUSTY, JANE M.

PY - 1981/1/1

Y1 - 1981/1/1

N2 - Successful long‐term cardiac pacemaker therapy requires both reliable generator output and stable, altainable chronic stimulation thresholds. Strength duration curves, which display cardiac stimulalion thresholds as a function of impulse duration, provide needed data to evaluate more thoroughly acute and chronic lead thresholds. We measured chronic strength duration curves at the time of generator replacement in 47 patients with three different types of lead systems of variable geometry and surface area and compared these curves with acute strength duration curves measured at the time of initial lead implantation in 19 patients. We found that strength duration curves have a characteristic shape; however, chronic strength duration curves were shifted upward and to the right of acute strength duration curves, regardless of electrode tip surface area or geometric design. Our data suggest that variable pulse width exceeding 1 ms may not significantly reduce stimulation thresholds.

AB - Successful long‐term cardiac pacemaker therapy requires both reliable generator output and stable, altainable chronic stimulation thresholds. Strength duration curves, which display cardiac stimulalion thresholds as a function of impulse duration, provide needed data to evaluate more thoroughly acute and chronic lead thresholds. We measured chronic strength duration curves at the time of generator replacement in 47 patients with three different types of lead systems of variable geometry and surface area and compared these curves with acute strength duration curves measured at the time of initial lead implantation in 19 patients. We found that strength duration curves have a characteristic shape; however, chronic strength duration curves were shifted upward and to the right of acute strength duration curves, regardless of electrode tip surface area or geometric design. Our data suggest that variable pulse width exceeding 1 ms may not significantly reduce stimulation thresholds.

KW - chronic strength duration curves

KW - pacemaker therapy

UR - http://www.scopus.com/inward/record.url?scp=0019795416&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0019795416&partnerID=8YFLogxK

U2 - 10.1111/j.1540-8159.1981.tb03715.x

DO - 10.1111/j.1540-8159.1981.tb03715.x

M3 - Article

C2 - 6167954

AN - SCOPUS:0019795416

VL - 4

SP - 376

EP - 379

JO - PACE - Pacing and Clinical Electrophysiology

JF - PACE - Pacing and Clinical Electrophysiology

SN - 0147-8389

IS - 4

ER -