Telemetry ECG monitoring during cardiac rehabilitation to detect myocardial ischemia

Heart - Diseases - Exercise therapy;Heart - Diseases - Patients - Rehabilitation;Electrocardiography

Crenshaw, BenPorcari, J. ;

University of Wisconsin

关键词: Heart - Diseases - Exercise therapy;    Heart - Diseases - Patients - Rehabilitation;    Electrocardiography;   

Others  :  https://minds.wisconsin.edu/bitstream/handle/1793/48683/Ocrenshawben2000.PDF?sequence=1&isAllowed=y

瑞士|英语

来源: University of Wisconsin

【 摘 要 】

Historically, telemetric ECG monitoring (TELE) has been thought to be incapable ofdetecting ST-segment changes during exercise. One hundred and nine patients underwenta diagnostic exercise test. A 12-lead ECG (12L) and TELE (modified Lead 11) wererecorded simultaneously throughout the exercise test. A total of 1041 temporallycorrelated tracings were blinded, then interpreted by a cardiologist. ST depression wasdefined as >_ lmm horizontal or downsloping at .08 mm from the J point in 2 or moreadjacent leads. One hundred and twenty-nine tracings (in 36 patients) were positive forST depression on 12L. Corresponding changes (same time and lead group) were seen onTELE 61% (79/129) of the time. In normal 12L tracings, there were 29 ST abnormalitiesobserved in TELE (e.g. false positive). When changes were observed on TELE,corresponding changes were observed on 12L 73% (79/108) of the time. TELE matched12L in magnitude of ST depression within +/- 0.5 mm 54% of the time. In conclusion,TELE missed ST changes seen on 12L 39% of the time, and does not appear to be asensitive marker of ischemia. However, when changes are seen on TELE, they indicatethat ischemia may be present in a high percentage (73%) and should be taken seriously.