ATI Med Surg II (Acute Coronary Syndrome) Exam knowledge
Questions with Expertly written solution 2025/2026
what is myocardial injury? - correct answer the tissue is still potentially viable if blood
supply is returned
cells do not fully repolarize because of deficient blood suup;y
ST segment elevation
what is myocardial infarction? - correct answer dead necrotic tissue
lack of depolarization
cells become replaced with scar tissue
pathological Q wave on EKG
True or false: T wave inversion with myocardial injury? - correct answer false
T wave inversion with ischemia
True or false: ST elevation with myocardial injury? - correct answer true
true or false: T wave elevation with myocardial infarction? - correct answer false.
Pathologic Q wave and ST elevation with myocardial infarction
,what are cardiac biomarkers/cardiac enzymes that we may draw for labs? - correct
answer Myoglobin
CK
Troponin
electrolytes
CBC
CMP --> ALT/AST and albumin included in CMP but excluded from BMP
what happens to the biomarkers if the coronary artery is opened up by fibrinolytic
therapy or a percutaneous catheter? - correct answer then the biomarkers will have a
more rapid rise and dramatic fall
myoglobin - correct answer first thing to rise with chest pain
not used as much to determine
CK - correct answer will elevate 6 hours after an MI
peaks at 18 hours
returns to normal around 24 hours
There are lots of versions of CK. CKMB is specific to myocardial cells
, --> if CK is elevated they will look to see if the CKMB is elevated to determine cardiac
issue
Troponin - correct answer Troponin I is specific to cardiac cells.
Increases 4-6 hours after MI
peaks 10-24 hours
returns to baseline at 10-14 days
what electrolytes do we look at with the heart? - correct answer K+
Mg+
Ca+
why do we do a CBC with an MI? - correct answer to make sure that we have
adequate HGB to promote correct oxygenation
why do we do a CMP with an MI? - correct answer look at glucose levels in diabetics
look at elevated renal labs (BUN/Creat) --> this is especially important if we are sending
them to the cath lab where dye will damage the kidneys.
what are complications of an acute MI? - correct answer ventricular aneurysm
ventricular septal rupture
Questions with Expertly written solution 2025/2026
what is myocardial injury? - correct answer the tissue is still potentially viable if blood
supply is returned
cells do not fully repolarize because of deficient blood suup;y
ST segment elevation
what is myocardial infarction? - correct answer dead necrotic tissue
lack of depolarization
cells become replaced with scar tissue
pathological Q wave on EKG
True or false: T wave inversion with myocardial injury? - correct answer false
T wave inversion with ischemia
True or false: ST elevation with myocardial injury? - correct answer true
true or false: T wave elevation with myocardial infarction? - correct answer false.
Pathologic Q wave and ST elevation with myocardial infarction
,what are cardiac biomarkers/cardiac enzymes that we may draw for labs? - correct
answer Myoglobin
CK
Troponin
electrolytes
CBC
CMP --> ALT/AST and albumin included in CMP but excluded from BMP
what happens to the biomarkers if the coronary artery is opened up by fibrinolytic
therapy or a percutaneous catheter? - correct answer then the biomarkers will have a
more rapid rise and dramatic fall
myoglobin - correct answer first thing to rise with chest pain
not used as much to determine
CK - correct answer will elevate 6 hours after an MI
peaks at 18 hours
returns to normal around 24 hours
There are lots of versions of CK. CKMB is specific to myocardial cells
, --> if CK is elevated they will look to see if the CKMB is elevated to determine cardiac
issue
Troponin - correct answer Troponin I is specific to cardiac cells.
Increases 4-6 hours after MI
peaks 10-24 hours
returns to baseline at 10-14 days
what electrolytes do we look at with the heart? - correct answer K+
Mg+
Ca+
why do we do a CBC with an MI? - correct answer to make sure that we have
adequate HGB to promote correct oxygenation
why do we do a CMP with an MI? - correct answer look at glucose levels in diabetics
look at elevated renal labs (BUN/Creat) --> this is especially important if we are sending
them to the cath lab where dye will damage the kidneys.
what are complications of an acute MI? - correct answer ventricular aneurysm
ventricular septal rupture
