The Probability of Defibrillation Success and the Incidence of Postshock Arrhythmia as a Function of Shock Strength.
Saved in:
| Title: | The Probability of Defibrillation Success and the Incidence of Postshock Arrhythmia as a Function of Shock Strength. |
|---|---|
| Authors: | Gates, Adam W.1,2, Wolf, Patrick D.1,2, Hillsley, Russell E.1,2, Souza, Joseph J.3, Smith, William M.1,2, Ideker, Raymond E.1,2 |
| Source: | Pacing & Clinical Electrophysiology. Jul1994, Vol. 17 Issue 7, p1208-1217. 10p. |
| Subjects: | Electric countershock, Cardiac resuscitation, Arrhythmia, Electrodes, Right heart ventricle, Electrotherapeutics |
| Abstract: | The effects of high voltage defibrillation shocks given to six swine were studied to determine if there is a limit to the advantage gained from increasing the shock strength. An endocardial electrode was placed in the right ventricle, and a 114-cm² cutaneous patch was placed on the left lateral thorax. Monophasic (10 msec) and single capacitor biphosic (5/5 msec) shocks with leading edge voltages of 200, 400, 600, 800, and 990 volts (approximately 2.3-59 J) were tested. For monophasic shocks, the probability of successful defibrillation ranged from 0% at 200 V to 90% at 990 V. The incidence of postshock arrhythmia increased from 0% for successful shocks at 600 V to 67% for successful shocks at 990 V. For biphasic shocks, the probability of success peaked at 97% for the 600-, 800-, and 990-V shocks. The incidence of postshock arrhythmia increased from 8% at 400 V to 55% at 990 V. Although more postshock arrhythmias occurred at lower strengths for biphasic than for monophasic shocks, an efficacy criterion, quantifying the probability of defibrillation success acid the probability that a postshock arrhythmia will not occur, was always higher for biphasic shocks. The probability of success never reached 100% for either waveform while the incidence of postshock arrhythmia increased as the shock strength increased. In conclusion, for the catheter-patch electrode configuration, increasing the shock strength does not always improve the probability of success and may increase the incidence of postshock arrhythmia. [ABSTRACT FROM AUTHOR] |
| Copyright of Pacing & Clinical Electrophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 17475845 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: The Probability of Defibrillation Success and the Incidence of Postshock Arrhythmia as a Function of Shock Strength. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Gates%2C+Adam+W%2E%22">Gates, Adam W.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wolf%2C+Patrick+D%2E%22">Wolf, Patrick D.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Hillsley%2C+Russell+E%2E%22">Hillsley, Russell E.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Souza%2C+Joseph+J%2E%22">Souza, Joseph J.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Smith%2C+William+M%2E%22">Smith, William M.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ideker%2C+Raymond+E%2E%22">Ideker, Raymond E.</searchLink><relatesTo>1,2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Pacing+%26+Clinical+Electrophysiology%22">Pacing & Clinical Electrophysiology</searchLink>. Jul1994, Vol. 17 Issue 7, p1208-1217. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Electric+countershock%22">Electric countershock</searchLink><br /><searchLink fieldCode="DE" term="%22Cardiac+resuscitation%22">Cardiac resuscitation</searchLink><br /><searchLink fieldCode="DE" term="%22Arrhythmia%22">Arrhythmia</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Right+heart+ventricle%22">Right heart ventricle</searchLink><br /><searchLink fieldCode="DE" term="%22Electrotherapeutics%22">Electrotherapeutics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The effects of high voltage defibrillation shocks given to six swine were studied to determine if there is a limit to the advantage gained from increasing the shock strength. An endocardial electrode was placed in the right ventricle, and a 114-cm² cutaneous patch was placed on the left lateral thorax. Monophasic (10 msec) and single capacitor biphosic (5/5 msec) shocks with leading edge voltages of 200, 400, 600, 800, and 990 volts (approximately 2.3-59 J) were tested. For monophasic shocks, the probability of successful defibrillation ranged from 0% at 200 V to 90% at 990 V. The incidence of postshock arrhythmia increased from 0% for successful shocks at 600 V to 67% for successful shocks at 990 V. For biphasic shocks, the probability of success peaked at 97% for the 600-, 800-, and 990-V shocks. The incidence of postshock arrhythmia increased from 8% at 400 V to 55% at 990 V. Although more postshock arrhythmias occurred at lower strengths for biphasic than for monophasic shocks, an efficacy criterion, quantifying the probability of defibrillation success acid the probability that a postshock arrhythmia will not occur, was always higher for biphasic shocks. The probability of success never reached 100% for either waveform while the incidence of postshock arrhythmia increased as the shock strength increased. In conclusion, for the catheter-patch electrode configuration, increasing the shock strength does not always improve the probability of success and may increase the incidence of postshock arrhythmia. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Pacing & Clinical Electrophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=17475845 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/j.1540-8159.1994.tb01487.x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1208 Subjects: – SubjectFull: Electric countershock Type: general – SubjectFull: Cardiac resuscitation Type: general – SubjectFull: Arrhythmia Type: general – SubjectFull: Electrodes Type: general – SubjectFull: Right heart ventricle Type: general – SubjectFull: Electrotherapeutics Type: general Titles: – TitleFull: The Probability of Defibrillation Success and the Incidence of Postshock Arrhythmia as a Function of Shock Strength. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Gates, Adam W. – PersonEntity: Name: NameFull: Wolf, Patrick D. – PersonEntity: Name: NameFull: Hillsley, Russell E. – PersonEntity: Name: NameFull: Souza, Joseph J. – PersonEntity: Name: NameFull: Smith, William M. – PersonEntity: Name: NameFull: Ideker, Raymond E. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul1994 Type: published Y: 1994 Identifiers: – Type: issn-print Value: 01478389 Numbering: – Type: volume Value: 17 – Type: issue Value: 7 Titles: – TitleFull: Pacing & Clinical Electrophysiology Type: main |
| ResultId | 1 |
