standard, rises within 3 to 12 hours of onset
of chest pain, peaks at 24 hours, and returns
to baseline after 48 to 72 hours. Troponin I
rises within 3 to 12 hours of onset of chest
pain, peaks at 24 to 48 hours, and reaches
baseline over 5 to 14 days.
Other diagnostic tests that can be used to
detect MI include a cardiac stress test and
cardiac catheterization. A cardiac stress test
is usually done if cardiac enzyme testing
comes back negative and the 12-lead ECG is
normal. This can be done on an outpatient
basis or may be performed before the patient
is discharged. Cardiac catheterization is usually
ordered if there’s a high suspicion of MI,
sometimes even before completion of serial
cardiac enzyme testing. The earlier a definitive
diagnosis is made, the quicker treatment
can be started.
Mrs. Smith’s 12-lead ECG shows ST-segment
elevations in the V5 and V6 leads, indicating
injury to the lateral wall of the heart
(see Tissue destruction in MI). Her lab results
are as follows: CK, 132; CK-MB, 46; and troponin
I, 1.3.standard, rises within 3 to 12 hours of onsetof chest pain, peaks at 24 hours, and returnsto baseline after 48 to 72 hours. Troponin Irises within 3 to 12 hours of onset of chestpain, peaks at 24 to 48 hours, and reachesbaseline over 5 to 14 days.Other diagnostic tests that can be used todetect MI include a cardiac stress test andcardiac catheterization. A cardiac stress testis usually done if cardiac enzyme testingcomes back negative and the 12-lead ECG isnormal. This can be done on an outpatientbasis or may be performed before the patientis discharged. Cardiac catheterization is usuallyordered if there’s a high suspicion of MI,sometimes even before completion of serialcardiac enzyme testing. The earlier a definitivediagnosis is made, the quicker treatmentcan be started.Mrs. Smith’s 12-lead ECG shows ST-segmentelevations in the V5 and V6 leads, indicatinginjury to the lateral wall of the heart(see Tissue destruction in MI). Her lab resultsare as follows: CK, 132; CK-MB, 46; and troponinI, 1.3.
การแปล กรุณารอสักครู่..
