These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Evaluation of a Holter system to record ST-segment changes.
    Author: Hammill SC.
    Journal: J Electrocardiol; 1987 Oct; 20 Suppl():12-5. PubMed ID: 3694091.
    Abstract:
    This study was performed to establish the accuracy of the Avionics 445B recorder and Innovator 750 scanner for identifying ST-segment changes in patients undergoing treadmill exercise testing. A series of 143 patients underwent treadmill exercise testing with 12-lead ECG monitoring and 2-lead Holter monitoring. The mean age of the patients (134 men and 9 women) was 59.3 years (range, 27 to 77). The frequency range of the recorder was 0.08 to 30 Hz. A modified V2 and V5 bipolar lead system was used for the Holter recording. The Holter tape was then scanned using the Innovator 750 scanner. The technician adjusted the baseline-reference point and J-point and then did not interact further with the recording. Treadmill exercise testing was undertaken using a submaximal Bruce protocol with 12 standard ECG leads recorded. Forty-two patients had positive ST-segment changes recorded by both the 12-lead ECG and the Holter monitor. Ninety-two patients had no ST-segment changes recorded by either of the systems. With the 12-lead ECG recorded during the treadmill exercise test used as the standard, the sensitivity of the Holter system was 89%, specificity 96%, and positive predictive accuracy 91%. The Holter recorder and automated scanning system should reliably detect episodes of ST-segment change occurring during ambulatory ECG monitoring.
    [Abstract] [Full Text] [Related] [New Search]