Can you give GTN to inferior MI?
Nitroglycerin is also contraindicated in the setting of an inferior MI with right ventricular involvement because, in this specific situation, the heart is dependent on preload.
What happens if you give Nitro to an inferior MI?
Up to 60% of patients with inferior wall acute myocardial infarction (AMI) develop hypotension. In many cases, profound hypotension is precipitated by the administration of nitroglycerin.
What is inferior myocardial infarction?
Inferior wall myocardial infarction (MI) occurs from a coronary artery occlusion with resultant decreased perfusion to that region of the myocardium. Unless there is timely treatment, this results in myocardial ischemia followed by infarction.
Why there is bradycardia in inferior wall MI?
Also, because the right coronary artery perfuses the sinoatrial node, heart block and bradycardia may occur. A high degree heart block, defined as a second or third-degree block, is seen in 19% of patients with acute inferior wall MI. The amount of collateral circulation to the AV impacts the rate of heart blocks.
Does myocardial infarction cause hypotension?
However, it is not uncommon to have increased blood pressure as the precipitant of acute MI. Alternatively, hypotension can also be seen. Usually this indicates either right ventricular MI or severe left ventricular dysfunction due to a large infarct area or impaired global cardiac contractility.
What type of myocardial infarction causes bradycardia?
Sinus bradycardia is particularly associated with inferior myocardial infarction as the inferior myocardial wall and the sinoatrial and atrioventricular nodes are usually all supplied by the right coronary artery.
What does inferior infarct age undetermined mean?
If the finding on an ECG is “septal infarct, age undetermined,” it means that the patient possibly had a heart attack at an undetermined time in the past. A second test is typically taken to confirm the finding, because the results may instead be due to incorrect placement of electrodes on the chest during the exam.
How is GTN used to treat myocardial infarction?
Since its discovery over 150 years ago, GTN has become the most common treatment for patients with unstable angina pectoris, myocardial infarction and heart failure.4–8The ability of GTN to promote vasodilation as well as tolerance was clearly noted during the GTN industry ascension in the 20thcentury.
What causes inferior wall myocardial infarction ( MI )?
Inferior wall myocardial infarction (MI) occurs from a coronary artery occlusion with resultant decreased perfusion to that region of the myocardium. Unless there is timely treatment, this results in myocardial ischemia followed by infarction.
What are the criteria for an inferior infarct?
The criteria for inferior infarct are Q waves in the inferior leads of 0.04 sec. or greater. But the computer algorithm accepts any size Q wave. Small q waves are often present normally; so “inferior infarcts” are over diagnosed. If the EKG is read by a trained cardiologist, a more accurate reading is likely.
Can a cigarette cause an inferior myocardial infarction?
Using tobacco products, such as cigarettes, can increase the risk of an inferior myocardial infarction. An inferior myocardial infarction is a problem with the heart where cells along the inferior wall of the heart die in response to oxygen deprivation.
