Chapter 17- Acute Myocardial Infraction Flashcards
What does the pain of an AMI signal?
The actual death of cells in the area of the heart muscle where blood flow is obstructed
Can dead heart muscle cells be revived?
No, dead cells cannot be revived
What do dead heart cells eventually turn into?
Scar tissue
Why is fast action critical in treating a heart attack?
The sooner the arterial blockage can be cleared, the fewer cells may die
How long after blood flow is cut off do some heart muscle cells begin to die?
About 30 minutes
After how long can as many as one-half of the heart muscle cells in the area be dead?
About 2 hours
What percentage of heart muscle cells will be dead after 4 to 6 hours?
More than 90%
What treatments can prevent permanent damage to the heart muscle if done within the first few hours after symptoms?
Clot-busting (thrombolytic) medications or angioplasty
What is essential for treating a heart attack effectively?
Immediate prehospital treatment and transport to the emergency department (ED)
In which part of the heart is an AMI more likely to occur?
The larger, thick-walled left ventricle
Why does the left ventricle need more blood and oxygen than the right ventricle?
It has a larger workload
Fill in the blank: The sooner the arterial blockage can be cleared, the _______.
fewer the cells that may die
True or False: Dead heart muscle cells can regenerate.
False
