Nremt Paramedic Level Quiz: Acute Coronary Syndromes And Ischemic Syndromes

What this quiz covers

This quiz focuses on Acute Coronary Syndromes And Ischemic Syndromes, giving you a quick way to practice the rules, question types, and explanations that matter most for Nremt Paramedic Level.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

Question 1

1. Administer an oral antacid and reassess her pain level in 15 minutes.
2. Obtain a 12-lead ECG and establish IV access without delay. (correct answer)
3. Perform a detailed abdominal exam and palpate for rebound tenderness.
4. Administer 2 mg of morphine sulfate intravenously for immediate pain control.

Explanation: The patient's presentation, particularly as a female with diabetes, is highly suggestive of an atypical acute coronary syndrome (ACS). Epigastric pain, nausea, and diaphoresis are common atypical symptoms. The highest priority is to acquire a 12-lead ECG to rule out or confirm myocardial ischemia or infarction. Establishing IV access is a concurrent priority for potential medication administration.

Question 2

1. Initiation of an unfractionated heparin infusion per protocol.
2. Administration of a 300 mg loading dose of clopidogrel.
3. Administration of a fibrinolytic agent such as tenecteplase. (correct answer)
4. Application of transcutaneous pacing pads for potential bradycardia.

Explanation: A new or presumably new left bundle branch block in the setting of ischemic chest pain is considered a STEMI equivalent and an indication for reperfusion. However, an ischemic stroke within the past 3 months is an absolute contraindication to fibrinolytic therapy due to the high risk of intracranial hemorrhage. The patient should be transported for primary PCI.

Question 3

1. He is likely experiencing a non-ST-elevation myocardial infarction (NSTEMI).
2. He has a critical stenosis of the left anterior descending artery. (correct answer)
3. The ECG changes are likely due to a previous, resolved pericarditis episode.
4. The patient is at immediate risk for a life-threatening ventricular arrhythmia.

Explanation: The described ECG finding of deep, biphasic T-waves in the precordial leads (V2-V3) in a patient with a history of recent angina is characteristic of Wellens' Syndrome (Type A). This pattern indicates a critical, high-grade stenosis of the proximal left anterior descending (LAD) artery and signals a high risk of impending massive anterior wall myocardial infarction.

Question 4

1. Rapidly administer a 1-liter normal saline bolus to increase her blood pressure.
2. Administer high-dose nitroglycerin to reduce preload and afterload.
3. Administer furosemide to reduce pulmonary edema from fluid overload.
4. Improve perfusion by carefully titrating a vasopressor agent and providing oxygen. (correct answer)

Explanation: When you encounter a patient with recent MI presenting with signs of cardiogenic shock, you need to recognize the underlying pathophysiology: damaged heart muscle cannot pump effectively, leading to poor perfusion and backup of blood into the lungs. This patient shows classic signs - hypotension, tachycardia, pulmonary edema (crackles), and poor perfusion (cool, clammy skin). The primary goal is improving tissue perfusion while supporting the failing heart. Answer D correctly identifies this approach: vasopressors can help maintain blood pressure and perfusion to vital organs, while oxygen supports cellular metabolism in the face of poor circulation. Dopamine or norepinephrine would be appropriate choices, carefully titrated to effect. Answer A is dangerous because fluid boluses worsen pulmonary edema in cardiogenic shock. The problem isn't volume depletion - it's pump failure. Adding more fluid increases preload on an already failing heart. Answer B, high-dose nitroglycerin, would further drop her already dangerously low blood pressure, potentially causing cardiovascular collapse. While nitroglycerin can help with pulmonary edema by reducing preload, the hypotension makes this inappropriate. Answer C, furosemide, addresses the pulmonary edema but ignores the critical perfusion problem. Diuretics can actually worsen hypotension and reduce cardiac output in cardiogenic shock. Remember: In cardiogenic shock, perfusion comes first. While you may eventually need diuretics or nitrates, stabilizing blood pressure and organ perfusion takes priority. Always treat the most life-threatening problem first - here, it's shock, not just pulmonary edema.

Question 5

1. Administration of 324 mg of aspirin chewed and swallowed.
2. Administration of sublingual nitroglycerin 0.4 mg. (correct answer)
3. Establishment of a large-bore IV and administration of a normal saline bolus.
4. Initiation of rapid transport to a PCI-capable facility.

Explanation: ST elevation in the inferior leads (II, III, aVF) should raise suspicion for a right ventricular infarction, especially in the presence of borderline hypotension. Nitroglycerin is a vasodilator that reduces preload. In a preload-dependent state like an RV infarction, nitroglycerin can cause profound hypotension and cardiovascular collapse. Therefore, it is contraindicated until RV involvement is ruled out (typically with a right-sided ECG) and blood pressure is stable.

Question 6

1. Administer aspirin and transport emergently, as PCI is always superior to fibrinolytics.
2. Contact medical control to recommend initiating fibrinolytic therapy prior to transport. (correct answer)
3. Transport to the closest community hospital for stabilization before a secondary transfer.
4. Administer a heparin bolus and begin transport, withholding fibrinolytics until arrival.

Explanation: Guidelines for STEMI care emphasize minimizing total ischemic time. While PCI is the preferred reperfusion strategy, it must be timely. A 'door-to-balloon' time of over 90-120 minutes is considered an unacceptable delay. Given the 90-minute transport time, the patient would benefit more from early reperfusion with prehospital fibrinolytics (door-to-needle time < 30 min) than a delayed PCI.

Question 7

1. Rupture of an unstable atherosclerotic plaque causing thrombosis.
2. A fixed, high-grade stenosis of a major coronary artery.
3. Focal spasms of the coronary arteries that temporarily restrict blood flow. (correct answer)
4. Microvascular dysfunction unrelated to the epicardial coronary arteries.

Explanation: This clinical picture is classic for Prinzmetal's (or variant) angina. It is characterized by transient ST-segment elevation during an episode of chest pain (typically at rest), caused by focal coronary artery spasm. The arteries themselves are often free of significant atherosclerotic disease. The ECG changes and symptoms resolve when the spasm subsides.

Question 8

1. Have the patient sign the refusal form and immediately clear the scene.
2. Contact medical control for an order to physically restrain the patient for transport.
3. Inform the patient that you will be required to call law enforcement to force him to go to the hospital.
4. Calmly explain the ECG findings, the diagnosis, and the risk of sudden death or permanent heart damage without immediate treatment. (correct answer)

Explanation: This question tests your understanding of informed consent and patient autonomy in emergency medicine. When you encounter a competent adult patient refusing life-saving treatment, you must balance respecting their autonomy with your duty to provide appropriate care. The correct approach is D - calmly explaining the ECG findings, diagnosis, and serious risks without immediate treatment. An inferior STEMI represents a medical emergency where delay significantly increases mortality and morbidity. Your role is to ensure the patient truly understands the gravity of their condition before making an informed decision. Many patients minimize cardiac symptoms, attributing them to less serious causes like indigestion. By clearly explaining that the ECG shows active heart muscle death and the immediate risk of cardiac arrest or permanent disability, you're providing the information necessary for truly informed consent. A is inappropriate because simply having a refusal signed without ensuring informed consent is inadequate - the patient doesn't understand the true nature of their condition. B is wrong because competent adults cannot be physically restrained for medical treatment against their will, and medical control cannot override patient autonomy in this situation. C is incorrect because law enforcement cannot force a competent adult to accept medical treatment for their own benefit. Key takeaway: Always ensure informed refusal by clearly explaining the diagnosis, immediate risks, and consequences of refusing treatment. Document that you provided this information. If the patient still refuses after understanding the risks, then respect their autonomy and have them sign the refusal form.

Question 9

1. A new pulmonary embolism from deep vein thrombosis.
2. Reocclusion of the previously stented coronary artery.
3. Acute rupture of a papillary muscle leading to mitral regurgitation. (correct answer)
4. Development of a left ventricular aneurysm.

Explanation: This patient's presentation is a classic example of a mechanical complication of an MI. The sudden onset of severe pulmonary edema (rales) combined with a new, loud holosystolic murmur points to acute severe mitral regurgitation, most commonly caused by the rupture of a papillary muscle. This is a surgical emergency.

Question 10

1. Obtain a posterior 12-lead ECG to rule out posterior wall extension.
2. Auscultate the lungs for the presence of rales or crackles.
3. Obtain a right-sided 12-lead ECG to assess for right ventricular involvement. (correct answer)
4. Check for a peripheral pulse deficit to rule out aortic dissection.

Explanation: An inferior wall MI (ST elevation in II, III, aVF) can extend to the right ventricle. Given the patient's borderline hypotension, assessing for RV involvement is critical before administering any preload-reducing medications like nitroglycerin or morphine, which could cause a precipitous drop in blood pressure. A right-sided ECG is the definitive prehospital tool for this assessment.

Question 11

1. Right Coronary Artery (RCA).
2. Left Circumflex Artery (LCx).
3. Posterior Descending Artery (PDA).
4. Proximal Left Anterior Descending Artery (LAD). (correct answer)

Explanation: When you encounter ECG patterns suggesting coronary occlusion without obvious ST elevation, you need to recognize subtle but critical signs that indicate a high-grade blockage requiring immediate intervention. The key finding here is the combination of upsloping ST depression at the J-point with tall, symmetric, peaked T-waves in leads V2-V4. This specific pattern is called "hyperacute T-waves" and represents the earliest ECG manifestation of acute coronary occlusion. When these hyperacute T-waves appear in the anterior precordial leads (V2-V4), they indicate proximal LAD occlusion. The upsloping ST depression often precedes frank ST elevation and shouldn't be dismissed as "non-STEMI" – this patient needs emergent catheterization. Looking at the wrong answers: Choice A (RCA) would typically show changes in leads II, III, and aVF, not the anterior leads V2-V4. Choice B (LCx) occlusion usually presents with changes in lateral leads (I, aVL, V5-V6) or may be electrically silent. Choice C (PDA) would manifest similarly to RCA since the PDA is typically a branch of the RCA, affecting inferior leads. The correct answer is D because proximal LAD occlusion affects the large anterior wall territory supplied by leads V2-V4, and hyperacute T-waves are often the first sign before progression to ST elevation. Remember this pattern: tall, peaked, symmetric T-waves in any lead group indicate hyperacute changes and suggest complete vessel occlusion in that territory's corresponding artery. Don't wait for ST elevation – hyperacute T-waves demand immediate reperfusion therapy.

Question 12

1. The radiation of the pain to his left arm and jaw.
2. The patient's complaint of associated diaphoresis and nausea.
3. The sharp, pleuritic nature of the pain and its relief with positional changes. (correct answer)
4. The presence of ST elevation in contiguous leads such as V2, V3, and V4.

Explanation: While several signs and symptoms can overlap, the most classic differentiator between pericarditis and ACS is the nature of the pain. Pericarditis pain is typically sharp, pleuritic (worse with inspiration), and significantly affected by position, with relief upon sitting up and leaning forward. ACS pain is typically a constant pressure or squeezing that is not pleuritic or positional.

Question 13

1. Administer a fibrinolytic to dissolve the suspected coronary thrombus.
2. Prevent thrombus propagation and complete occlusion with antiplatelet therapy. (correct answer)
3. Immediately apply transcutaneous pacing pads in anticipation of bradycardia.
4. Administer a sodium bicarbonate infusion to correct metabolic acidosis.

Explanation: This patient's presentation and ECG are consistent with a non-ST-elevation acute coronary syndrome (NSTE-ACS), which includes unstable angina and NSTEMI. The underlying pathology is a partially occlusive thrombus. The primary goal of prehospital management is to prevent the thrombus from growing and causing a complete occlusion (evolving into a STEMI). This is achieved with antiplatelet (aspirin, P2Y12 inhibitors) and anticoagulant (heparin) therapy. Fibrinolysis is not indicated for NSTE-ACS.

Question 14

1. It is contraindicated due to the high risk of causing cardiogenic shock.
2. It should be administered to reduce myocardial oxygen demand and limit infarct size. (correct answer)
3. It should be deferred until after the patient has undergone percutaneous coronary intervention.
4. It is only indicated if the patient develops a supraventricular tachycardia.

Explanation: In patients with STEMI who are tachycardic and/or hypertensive and do not have signs of heart failure, acute decompensation, or risk factors for cardiogenic shock, early IV beta-blockers are recommended. They decrease heart rate, blood pressure, and contractility, which reduces myocardial oxygen demand, potentially limiting the size of the infarct and reducing the risk of arrhythmias.

Question 15

1. V7 at the posterior axillary line, V8 at the mid-scapular line, and V9 at the left paravertebral border, all in the 5th intercostal space. (correct answer)
2. V7, V8, and V9 are placed identically to V4, V5, and V6 but on the right side of the chest.
3. V7, V8, and V9 are placed two intercostal spaces higher than V4, V5, and V6 on the left side of the chest.
4. V7 at the anterior axillary line, V8 at the mid-clavicular line, and V9 at the right sternal border, all in the 4th intercostal space.

Explanation: ST depression and tall R waves in the anterior leads (V1-V4) are 'mirror images' of a posterior STEMI. To directly visualize the posterior wall and confirm ST elevation, posterior leads are required. The correct placement is V7 on the posterior axillary line, V8 on the mid-scapular line, and V9 on the left paravertebral border, all on the same horizontal plane as V4-V6 (5th intercostal space).

Question 16

1. The nearest hospital for general stabilization and targeted temperature management.
2. A comprehensive stroke center to rule out an anoxic brain injury.
3. A trauma center in case of injuries sustained during the collapse or CPR.
4. A hospital with 24/7 cardiac catheterization laboratory capabilities. (correct answer)

Explanation: When you encounter a post-cardiac arrest patient with ROSC, your destination decision hinges on identifying the underlying cause and the most time-sensitive intervention needed. This patient presents classic signs of ST-elevation myocardial infarction (STEMI) as the likely precipitating event for his ventricular fibrillation arrest. The correct answer is D because the 4mm ST elevation in leads V2-V5 indicates an acute anterior STEMI requiring emergent percutaneous coronary intervention (PCI). This patient needs immediate cardiac catheterization to open the blocked coronary artery - the "door-to-balloon" time is critical for myocardial salvage and preventing re-arrest. His neurological status (following commands) suggests minimal anoxic brain injury, making cardiac intervention the priority. Option A is incorrect because general stabilization and targeted temperature management, while important, are secondary to treating the acute coronary occlusion. Most hospitals cannot provide emergent PCI. Option B is wrong because stroke centers focus on cerebrovascular interventions, not cardiac catheterization. His ability to follow commands also suggests stroke workup isn't the immediate priority. Option C misses the mark because trauma evaluation is far less urgent than addressing the STEMI, and CPR-related injuries are typically minor compared to the life-threatening coronary occlusion. Remember this pattern: Post-arrest patients with STEMI findings need cardiac catheterization capabilities above all else. The ST elevation tells you the heart attack is ongoing and reversible with prompt intervention - don't get distracted by other post-arrest considerations when you see clear STEMI criteria.

Question 17

1. Explain that heartburn is a side effect, not a true allergy, and then administer the aspirin. (correct answer)
2. Document the allergy on the chart and withhold the aspirin as requested.
3. Administer clopidogrel as a substitute for the aspirin due to the patient's allergy.
4. Contact medical control to request an order for an alternative antiplatelet agent.

Explanation: When encountering patient-reported allergies in emergency medicine, you must distinguish between true allergic reactions and side effects or intolerances. This differentiation is crucial for medication administration, especially with critical drugs like aspirin in acute coronary syndrome. The patient describes heartburn as their "allergic" reaction to aspirin. Heartburn is a well-known gastrointestinal side effect of aspirin due to its irritation of the stomach lining, not an immune-mediated allergic response. True aspirin allergies typically present as bronchospasm, urticaria, angioedema, or anaphylaxis. Since aspirin is a cornerstone therapy for ACS that significantly reduces mortality and morbidity, withholding it based on a misunderstood side effect could harm the patient. Answer A is correct because you should educate the patient about the difference between side effects and allergies, then administer this life-saving medication. The potential cardiac benefit far outweighs the risk of temporary gastric discomfort. Answer B is wrong because it accepts the patient's mischaracterization as a true allergy and withholds essential treatment. Answer C is incorrect because clopidogrel isn't typically carried on ambulances and requires medical control authorization. Answer D unnecessarily delays treatment when you can resolve the issue through patient education and proceed with appropriate care. Remember: On NREMT questions about drug allergies, differentiate between true allergic reactions (immune-mediated) and side effects or intolerances. Don't let patient misconceptions prevent you from delivering evidence-based emergency care, especially for time-sensitive conditions like ACS.

Question 18

1. Leads II, III, and aVF. (correct answer)
2. Leads I and aVL.
3. Leads V5 and V6.
4. Leads aVR and V1.

Explanation: When interpreting 12-lead ECGs, understanding anatomical relationships and electrical views of the heart is crucial for recognizing reciprocal changes in STEMIs. An anteroseptal STEMI affects the front and septal walls of the left ventricle, viewed by leads V1-V4. Reciprocal changes occur in leads that view the "opposite" wall of the heart from the infarct location. Since the anterior wall is being damaged, you'll see reciprocal ST depression in leads viewing the inferior wall. The inferior leads are II, III, and aVF, making choice A correct. This reciprocal pattern helps confirm the diagnosis and indicates the extent of coronary artery involvement. Choice B (leads I and aVL) represents the lateral leads, which view the lateral wall of the left ventricle. While these might show some changes in extensive anterior MIs, they're not the primary reciprocal leads for anteroseptal STEMIs. Choice C (leads V5 and V6) are also lateral leads that view the lateral wall, not the reciprocal territory for anterior damage. Choice D (leads aVR and V1) is incorrect because aVR rarely shows clinically significant reciprocal changes due to its unique positioning, and V1 is actually part of the anteroseptal territory showing ST elevation, not depression. Study tip: Memorize the lead groups and their anatomical views: inferior (II, III, aVF), anterior (V1-V4), and lateral (I, aVL, V5-V6). Reciprocal changes appear in the leads "across" from the infarct - anterior STEMIs show reciprocal depression in inferior leads, and vice versa.

Question 19

1. An acute coronary syndrome presenting atypically. (correct answer)
2. A transient ischemic attack (TIA).
3. Sepsis secondary to a urinary tract infection.
4. Dehydration and orthostatic hypotension.

Explanation: When evaluating elderly patients with syncope and altered mental status, you must consider that cardiac conditions often present atypically in this population. The combination of bradycardia (HR 54), hypotension, and syncopal episode creates a clinical picture highly suggestive of cardiac compromise. Answer A is correct because acute coronary syndrome (ACS) frequently presents without classic chest pain in elderly patients, especially those over 75. The "silent MI" phenomenon is well-documented in geriatric populations due to altered pain perception and autonomic dysfunction. The bradycardia could indicate conduction system involvement or be a compensatory response to decreased cardiac output. This constellation of findings—syncope, altered mental status, bradycardia, and hypotension—makes ACS a high-priority consideration requiring immediate cardiac monitoring and 12-lead ECG. Answer B (TIA) is less likely because while TIAs can cause confusion, they typically don't cause the hemodynamic instability seen here. Answer C (sepsis/UTI) would more commonly present with tachycardia rather than bradycardia, and fever would be expected. Answer D (dehydration/orthostatic hypotension) could explain some findings but wouldn't typically cause the degree of bradycardia observed. Key takeaway: In elderly patients with syncope, always prioritize cardiac causes, especially when bradycardia and hypotension are present. Remember that ACS presentations become increasingly atypical with advancing age—absence of chest pain doesn't rule out acute coronary syndrome. Always obtain a 12-lead ECG early in your assessment of elderly patients with unexplained syncope or altered mental status.

Question 20

1. Severe electrolyte abnormalities, specifically hyperkalemia.
2. A massive pulmonary embolism causing right heart strain.
3. Occlusion or critical stenosis of the left main coronary artery. (correct answer)
4. An extensive posterior wall myocardial infarction.

Explanation: The ECG pattern of widespread ST depression, most prominent in leads I, II, and V4-V6, with concurrent ST elevation in lead aVR (and sometimes V1) is a highly specific marker for severe stenosis or occlusion of the left main coronary artery or equivalent multi-vessel disease. This is a high-mortality condition requiring immediate intervention.