Which enzyme level is first elevated in myocardial infarction?
Which enzyme level is first elevated in myocardial infarction?
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Thrombolytic drugs are indicated for any patient with acute myocardial infarction, provided the likely benefits outweigh the possible risks. Trials have shown that the benefit is greatest in those with electrocardiogram (ECG) changes that include ST-segment elevation, especially in those with anteriRead more
Thrombolytic drugs are indicated for any patient with acute myocardial infarction, provided the likely benefits outweigh the possible risks. Trials have shown that the benefit is greatest in those with electrocardiogram (ECG) changes that include ST-segment elevation, especially in those with anterior infarction, and in patients with bundle branch block.
The patient has received a thrombolytic, possibly streptokinase, in the past. Mr MT should be asked if he was given a card to carry with him with the identity of the therapy he was given. If
the prior treatment was with streptokinase, prolonged persistence of antibodies to streptokinase may reduce the effectiveness of subsequent treatment.
Therefore, streptokinase should not be used again beyond 4 days of first administration of streptokinase, and urgent consideration should be given to the use of an alternative thrombolytic agent such as alteplase
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The most sensitive early marker for myocardial infarction is myoglobin. Troponin levels should be measured at presentation and again 10-12 hours after the onset of symptoms. When there is uncertainty regarding the time of symptom onset, troponin should be measured at twelve hours after the presentatRead more
The most sensitive early marker for myocardial infarction is myoglobin. Troponin levels should be measured at presentation and again 10-12 hours after the onset of symptoms. When there is uncertainty regarding the time of symptom onset, troponin should be measured at twelve hours after the presentation.
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