A client presents to the emergency healthcare setting and diagnosed with a life-threatening ventricular dysrhythmia. Which of the following medications would the nurse begin to prepare?
Atenolol
Lisinopril
Adenosine
Procainamide
The Correct Answer is D
A) Atenolol: This is a beta-blocker that can be used for various cardiac conditions, including hypertension and certain arrhythmias, but it is not typically the first-line treatment for acute life-threatening ventricular dysrhythmias in the emergency setting.
B) Lisinopril: This medication is an ACE inhibitor primarily used to manage hypertension and heart failure. It does not address acute ventricular dysrhythmias and would not be appropriate for immediate use in this scenario.
C) Adenosine: While adenosine is effective for certain types of supraventricular tachycardia, it is not indicated for life-threatening ventricular dysrhythmias. It has a very short duration of action and is not the drug of choice in this context.
D) Procainamide: This antiarrhythmic medication is specifically used to treat life-threatening ventricular dysrhythmias. It works by stabilizing the cardiac membrane and is indicated in emergency situations to manage these types of arrhythmias. Therefore, preparing procainamide is the most appropriate action for the nurse in this scenario.
Free Nursing Test Bank
- Free Pharmacology Quiz 1
- Free Medical-Surgical Quiz 2
- Free Fundamentals Quiz 3
- Free Maternal-Newborn Quiz 4
- Free Anatomy and Physiology Quiz 5
- Free Obstetrics and Pediatrics Quiz 6
- Free Fluid and Electrolytes Quiz 7
- Free Community Health Quiz 8
- Free Promoting Health across the Lifespan Quiz 9
- Free Multidimensional Care Quiz 10
View Related questions
Correct Answer is C
Explanation
A) "Acts on the beta cells within the heart and lungs to regulate cardiac rhythm.": This statement is incorrect because calcium channel blockers do not primarily act on beta cells. Instead, they block calcium channels in cardiac and smooth muscle, which affects heart contractility and conductivity.
B) "Increases heart rate and increases myocardial contractility.": Calcium channel blockers typically do the opposite; they decrease heart rate and myocardial contractility by inhibiting calcium entry into the heart muscle cells. Therefore, this statement does not accurately describe their mechanism of action.
C) "Reduces the contractility and conductivity of the heart.": This statement accurately reflects the action of calcium channel blockers. By blocking calcium entry, these medications decrease myocardial contractility and slow down electrical conduction through the heart, which can help manage dysrhythmias.
D) "Increase oxygen to the systemic circulation.": While calcium channel blockers can improve blood flow and reduce myocardial oxygen demand by decreasing heart workload, their primary action does not directly focus on increasing oxygen delivery to systemic circulation. Their primary role is in managing heart contractility and rhythm.
Correct Answer is D
Explanation
A) "This medication decreases chest pain by dissolving blood clots that are occluding the arteries.": This statement is incorrect because nitroglycerin does not dissolve blood clots. Instead, it works by relaxing and dilating blood vessels, which helps improve blood flow to the heart muscle and relieve angina.
B) "Place one tablet under your tongue every 15 minutes and repeat up to 5 times for relief of chest pain.": This is not accurate; while nitroglycerin can be taken sublingually, the typical recommendation is to take one tablet every 5 minutes as needed for chest pain, not every 15 minutes, and not to exceed 3 tablets within 15 minutes.
C) "This medication is the first-line treatment for hypertension.": Although nitroglycerin can lower blood pressure, it is not typically considered a first-line treatment for hypertension. It is primarily used for angina relief rather than as a primary antihypertensive agent.
D) "This medication dilates cardiac blood vessels to deliver more oxygen to the heart.": This statement accurately describes the action of nitroglycerin. By dilating the coronary arteries, nitroglycerin increases blood flow and oxygen delivery to the heart muscle, which helps alleviate angina symptoms. This is a key point to emphasize during patient education.