EKG and Ischemia Quiz

What is the primary focus of the EKG lesson discussed in the video?

• Blood pressure monitoring

• Cardiac output measurement

• Heart rate variability

• ST depression and T-wave inversion

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• Free medical equipment

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Which of the following is a non-ischemic cause of ST depression?

• Acute coronary syndrome

• Pulmonary embolism

• Therapeutic digitalis usage

• Myocardial infarction

What is the significance of reciprocal changes in ST depression?

• They are irrelevant to ischemia

• They confirm a diagnosis of heart failure

• They suggest a posterior transmural infarction

• They indicate a normal EKG

What is a common cause of ST depression in acute coronary syndrome?

• High blood pressure

• Complete blockage of coronary arteries

• Non-occlusive thrombus

• Viral infection

How does an imbalance in oxygen supply and demand affect the heart?

• It improves cardiac function

• It has no effect on the heart

• It leads to increased heart rate

• It causes ischemia

Which of the following is NOT a factor that can increase oxygen demand?

• Sepsis

• Hypotension

• Hyperthyroidism

• Tachycardia

In which leads is T-wave inversion considered normal?

• Leads 1 and 2

• Leads 3, AVR, and V1

• Leads V5 and V6

• Leads V2 and V3

What does T-wave inversion indicate in the context of ischemia?

• Normal heart function

• Delayed and abnormal repolarization

• Increased blood pressure

• Improved cardiac output

Why should T-wave inversion be taken seriously in ischemic conditions?

• It is a sign of complete heart block

• It is a common finding in healthy individuals

• It always indicates a heart attack

• It can precede other significant EKG changes