Question

Which explanation by the nurse best describes why heart failure may develop after a myocardial infarction?

Answer 1

Correct Answers:

"After a heart attack, some heart muscle cells die and scar tissue forms, causing changes in heart structure and hormone levels that weaken the heart's pumping ability."

Rationale :

🟣Myocardial infarction (MI) causes irreversible necrosis of cardiac muscle tissue due to interrupted blood flow and oxygen supply.

🟣The affected area becomes fibrotic scar tissue, which cannot contract or conduct electrical impulses, reducing the overall cardiac output.

🟣This loss of functional myocardium triggers ventricular remodeling, where the remaining myocardium dilates and thickens in an attempt to compensate.

🟣Over time, these compensatory changes and neurohormonal activation (especially RAAS and sympathetic stimulation) lead to chronic heart failure.

🟣Heart failure post-MI thus develops primarily because the heart’s contractility and ejection fraction are diminished due to structural damage.

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Answer 2

Correct Answers:

Avoid strenuous activities

Rationale :

➡️After minor corneal surgery, avoiding strenuous activities is essential to prevent increased intraocular pressure (IOP), which could disrupt the surgical site or incision healing.

➡️Heavy lifting, bending, or straining can cause a sudden rise in IOP, leading to bleeding or corneal rupture.

➡️The cornea is delicate and requires adequate rest and protection to recover properly after surgery. ➡️The nurse should also instruct the client to use prescribed eye drops and wear protective eyewear to avoid trauma or infection.

➡️Gradual resumption of activities is advised only after clearance from the ophthalmologist to ensure complete healing.

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Answer 3

Correct Answers:

Obtain an electrocardiogram (ECG) immediately

Rationale :

✨Atypical symptoms such as indigestion, nausea, or lightheadedness in a female client may indicate an acute myocardial infarction (AMI).

✨Women often present with non-classic cardiac symptoms, so prompt evaluation is critical to detect ischemic changes early.

✨Performing an ECG immediately allows rapid identification of ST-segment changes, arrhythmias, or myocardial injury patterns.

✨Early diagnosis and intervention, such as reperfusion therapy, can significantly reduce myocardial damage and mortality.

✨Delaying assessment can lead to rapid deterioration, as cardiac events in women are frequently underrecognized and undertreated.

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Answer 4

Correct Answers:

"To prevent injury, the syringe tip should be placed just at the entrance of the ear canal, not inside it."

Rationale :

🌿The syringe tip must be positioned at the outer ear canal entrance to prevent trauma to the tympanic membrane (eardrum).

🌿Inserting it deeply can cause perforation or infection, especially if excessive pressure is applied during irrigation.

🌿The goal of irrigation is to gently loosen and flush out cerumen using body-temperature water, not to forcefully dislodge it.

🌿The nurse should also instruct the client to tilt the head and pull the pinna appropriately to straighten the canal during irrigation.

🌿Gentle, controlled irrigation ensures safe wax removal and protects the delicate structures of the inner ear.

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Answer 5

Correct Answers

Blank 1 Correct Option: Streptococcus viridans
Blank 2 Correct Option: Routine

Rationale :

🦷Streptococcus viridans (alpha-hemolytic streptococci) are normal oral flora that can enter the bloodstream during gingival manipulation (e.g., toothbrushing, flossing, dental procedures) and are a leading cause of community-acquired infective endocarditis (IE), especially in individuals with pre-existing valvular lesions.

🦷Once in the blood, viridans streptococci produce dextran-rich biofilms that bind to platelet-fibrin deposits on damaged endocardium or prosthetic material, forming vegetations that impair valve function and can embolize to the brain, spleen, kidneys, or coronaries.

🦷Poor oral hygiene and untreated periodontal disease increase gingival inflammation and bacteremia frequency, which raises IE risk in predisposed clients (e.g., prosthetic heart valves, prior IE, certain congenital heart diseases, cardiac transplant with valvulopathy).

🦷Routine dental care (professional cleanings, cavity management, periodontal therapy) combined with daily brushing and flossing reduces oral bacterial load, thereby lowering bacteremia episodes and subsequent valvular seeding by S. viridans.

🦷For high-risk cardiac conditions only, antibiotic prophylaxis is recommended before dental procedures that manipulate gingiva, periapical tissue, or perforate oral mucosa; commonly amoxicillin 2 g PO 30–60 min prior (with evidence-based alternatives if penicillin-allergic per current guidance).

🦷Client teaching should stress “everyday prevention”: meticulous twice-daily brushing, daily interdental cleaning, regular dental visits, and prompt treatment of oral infections, which have greater impact on IE prevention than a single antibiotic dose.

🦷Because S. viridans originates from the mouth, preventive efforts must focus on the oral portal of entry; by contrast, pathogens like Staphylococcus aureus often relate to skin/line infections or IVDU, underscoring why dental hygiene is uniquely critical for viridans-mediated IE.

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Answer 6

Correct Answers:

Rheumatic heart disease and murmur

Rationale :

◼️Valvular heart disease (VHD) refers to damage or defect in one or more of the heart valves (aortic, mitral, tricuspid, or pulmonary), leading to either stenosis (narrowing) or regurgitation (leakage) of blood flow.

◼️Rheumatic heart disease (RHD) is one of the most significant and preventable causes of acquired valvular disease globally.

◼️It develops after untreated or inadequately treated Group A Streptococcal pharyngitis, which triggers an autoimmune inflammatory reaction that damages the heart valves—especially the mitral and aortic valves.

◼️The inflammatory process results in fibrosis, leaflet thickening, and commissural fusion, causing the classic rheumatic murmur that indicates valvular involvement.

◼️The presence of a cardiac murmur after a history of rheumatic fever is a hallmark of valvular pathology.

◼️Clients with rheumatic fever or RHD are at high risk for progressive valve dysfunction, heart failure, atrial fibrillation, and infective endocarditis due to the damaged endothelial surface, which becomes a nidus for bacterial colonization.

◼️Nursing management includes monitoring for signs of heart failure, encouraging adherence to prophylactic antibiotics (e.g., penicillin), and educating clients on infection prevention, as secondary infections can further worsen valve damage.

◼️Other causes of valvular disease include congenital malformations, degenerative changes (especially in older adults), and infective endocarditis, but rheumatic etiology remains a classic and preventable cause recognized by the presence of a murmur and inflammatory cardiac history.

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Answer 7

Correct Answers:

Renal embolic event

Rationale :

♦️Clients with infective endocarditis (IE) are at high risk for embolization because vegetations on infected heart valves can break off and travel through circulation.

♦️When an embolus lodges in the splenic artery, it leads to splenic infarction, which manifests as sharp, radiating pain in the left upper quadrant, often extending to the left shoulder (Kehr’s sign) and back.

♦️This pain results from diaphragmatic irritation caused by splenic inflammation or infarction.

♦️Other signs may include fever, tenderness in the LUQ, and leukocytosis.

♦️Prompt reporting and further diagnostic evaluation (such as abdominal ultrasound or CT scan) are essential to prevent splenic rupture, which can cause life-threatening hemorrhage.

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Answer 8

Correct Answers:

Blood pressure

Rationale :

✅Nitroglycerin is a vasodilator that primarily acts on venous smooth muscle, reducing preload and myocardial oxygen demand.

✅Because of its potent vasodilating effect, it can cause significant hypotension, especially at higher infusion rates.

✅Continuous blood pressure monitoring is crucial to ensure safe titration of the infusion and prevent systemic hypotension and reflex tachycardia.

✅The nurse should also assess for headache and dizziness, which indicate excessive vasodilation.

✅If systolic BP drops below 90 mmHg or MAP <65, the infusion should be slowed or temporarily stopped per protocol.

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Answer 9

Correct Answers:

The client will walk for at least 30 minutes, five days per week for the next 6 weeks to help improve cardiovascular health and increase HDL levels.

Rationale :

💠This goal meets all components of the SMART framework—Specific, Measurable, Achievable, Relevant, and Time-bound.

💠Regular aerobic exercise (such as brisk walking) is clinically proven to increase HDL, reduce LDL and triglycerides, and improve overall cardiac function.

💠The frequency (five days/week), duration (30 minutes), and timeframe (6 weeks) provide clear parameters for evaluation.

💠Promoting lifestyle modifications like physical activity, balanced diet, and weight management is the first-line intervention for dyslipidemia before medication adjustments.

💠Encouraging adherence through achievable goals enhances patient motivation and long-term cardiovascular health.

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Answer 10

Correct Answers:

Administer aspirin 324 mg PO, chew

Rationale :

♦️The client’s symptoms—fatigue, dyspnea, nausea, and upper back pressure—along with tachycardia and low oxygen saturation, are consistent with an acute myocardial infarction (MI).

♦️Aspirin (acetylsalicylic acid) is administered immediately because it inhibits platelet aggregation, helping prevent further coronary thrombosis.

♦️Early administration of aspirin significantly reduces mortality and infarct size in acute coronary syndromes.

♦️Chewable aspirin ensures rapid absorption and onset of action compared to enteric-coated formulations.

♦️After aspirin, additional interventions (oxygen, nitroglycerin, heparin, ECG monitoring) follow per protocol, but antiplatelet therapy comes first in suspected MI.

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QLexNursing

1 :
Which explanation by the nurse best describes why heart failure may develop after a myocardial infarction?

2 :
A nurse is teaching a client about postoperative care following minor corneal surgery. Which instruction should the nurse include to prevent complications?

3 :
A female client denies classic chest pain but reports indigestion, nausea, and lightheadedness. Which nursing action is most appropriate?

5 :
The nurse is teaching a client with a history of valvular heart disease about preventing infective endocarditis.

Correct Answers

6 :
A nurse is caring for a client on a medical surgical floor.

Answer Options

7 :
A patient being treated for infective endocarditis reports sharp, radiating abdominal pain that extends to the left shoulder and back. The nurse recognizes that the patient’s symptoms may indicate a(n):

8 :
The provider orders a nitroglycerin IV drip at 5–10 mcg/min. Which parameter is most important to monitor before and during infusion?

9 :
A nurse is reviewing the laboratory results of a client during a routine health check-up. The client has elevated total cholesterol, LDL, and triglycerides, and decreased HDL. Which of the following SMART goals is most appropriate for the nurse to recommend?

10 :
A client arrives to the ED with fatigue, shortness of breath, nausea, mild pressure in the upper back and neck, HR 112 bpm, BP 104/64 mmHg, and SpO₂ 91% on room air. Which provider order should the nurse implement first?

QLexNursing

1 : Which explanation by the nurse best describes why heart failure may develop after a myocardial infarction?

2 : A nurse is teaching a client about postoperative care following minor corneal surgery. Which instruction should the nurse include to prevent complications?

3 : A female client denies classic chest pain but reports indigestion, nausea, and lightheadedness. Which nursing action is most appropriate?

5 : The nurse is teaching a client with a history of valvular heart disease about preventing infective endocarditis.

Correct Answers

6 : A nurse is caring for a client on a medical surgical floor.

Answer Options

7 : A patient being treated for infective endocarditis reports sharp, radiating abdominal pain that extends to the left shoulder and back. The nurse recognizes that the patient’s symptoms may indicate a(n):

8 : The provider orders a nitroglycerin IV drip at 5–10 mcg/min. Which parameter is most important to monitor before and during infusion?

9 : A nurse is reviewing the laboratory results of a client during a routine health check-up. The client has elevated total cholesterol, LDL, and triglycerides, and decreased HDL. Which of the following SMART goals is most appropriate for the nurse to recommend?

10 : A client arrives to the ED with fatigue, shortness of breath, nausea, mild pressure in the upper back and neck, HR 112 bpm, BP 104/64 mmHg, and SpO₂ 91% on room air. Which provider order should the nurse implement first?

1 :
Which explanation by the nurse best describes why heart failure may develop after a myocardial infarction?

2 :
A nurse is teaching a client about postoperative care following minor corneal surgery. Which instruction should the nurse include to prevent complications?

3 :
A female client denies classic chest pain but reports indigestion, nausea, and lightheadedness. Which nursing action is most appropriate?

5 :
The nurse is teaching a client with a history of valvular heart disease about preventing infective endocarditis.

6 :
A nurse is caring for a client on a medical surgical floor.

7 :
A patient being treated for infective endocarditis reports sharp, radiating abdominal pain that extends to the left shoulder and back. The nurse recognizes that the patient’s symptoms may indicate a(n):

8 :
The provider orders a nitroglycerin IV drip at 5–10 mcg/min. Which parameter is most important to monitor before and during infusion?

9 :
A nurse is reviewing the laboratory results of a client during a routine health check-up. The client has elevated total cholesterol, LDL, and triglycerides, and decreased HDL. Which of the following SMART goals is most appropriate for the nurse to recommend?

10 :
A client arrives to the ED with fatigue, shortness of breath, nausea, mild pressure in the upper back and neck, HR 112 bpm, BP 104/64 mmHg, and SpO₂ 91% on room air. Which provider order should the nurse implement first?