Myocardial Infarction (MI)

Terms in this set (15)

1. chest pain lasts for 20 min or more described as pain, pressure, tightness, heaviness, burning, squeezing, or crushing at the central chest or starts in or radiates to arms, shoulders, neck, jaw, or back
2. weakness, dyspnea, diaphoresis, anxiety
3. Nausea, vomitting (inferior wall MI). Women have more GI symptoms than men
4. Painless or silent (diabetics)
5. Tachycardia and Hypertension are usually due to sympathetic hyperactivity in anterior wall MI
6. Bradycardia and hypotension are most commonly associated with inferior wall MI>
7. S4 (4th heart sound) indicates reduced ventricular compliance
8. S3 or bibasilar crackles indicates LV failure due to systolic dysfunction
9. DIminised PMI (point of maximal impulse) during systole
10. new systolic murmur suggest ventricular septal defect or mitral regurgitation secondary to papillary muscle dysfunction due to ischemia
11. jugular vein distention with clear lungs indicate inferior wall MI
12. usually occurs between 6 AM-noon possibly due to increased in sympathetic activity cathecholamine released and platelet adhesiveness during this time (circadian pattern)
13. St-segment - elevation (> 1mm or more abouve baseline) is an indication of occlusive thrombus with poorer prognosis
14. reciprocal ST segment depression may occur in the leads facing the area opposite the site of injury
15. T wave inversion and new Q wave (more than or equal to 0.04 second in duration and greater than 25% of the height of the R wave) develop as MI evolves
16. No-ST segment elevation MI. ST segment depression and T wave inversion