A nurse is caring for a client who is alert and oriented and is receiving continuous ECG monitoring.
The cardiac rhythm strip shows a wavy baseline, no distinguishable P waves, and an increased heart rate.
The nurse should identify the cardiac rhythm as which of the following?
Atrial fibrillation.
Ventricular asystole.
Second-degree heart block.
Sinus tachycardia.
The Correct Answer is A
Choice A rationale:
The described cardiac rhythm with a wavy baseline, no distinguishable P waves, and an increased heart rate is consistent with atrial fibrillation. In atrial fibrillation, the atria quiver instead of contracting effectively, leading to an irregular and often rapid heart rate. This rhythm is characterized by the absence of distinct P waves on the ECG.
Choice B rationale:
Ventricular asystole is a flatline on the ECG, indicating the absence of electrical activity in the heart. It is a life-threatening arrhythmia and requires immediate intervention with cardiopulmonary resuscitation (CPR) and advanced cardiac life support (ACLS) protocols.
Choice C rationale:
Second-degree heart block is characterized by intermittent failure of atrial electrical impulses to conduct to the ventricles. This results in occasional dropped beats and a varying heart rate. It is not consistent with the described ECG findings in the question.
Choice D rationale:
Sinus tachycardia is a regular, fast heart rate originating from the sinoatrial (SA) node. In sinus tachycardia, P waves are present, indicating that the electrical impulses originate in the SA node. The described ECG findings do not match the characteristics of sinus tachycardia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Baked potato chips are a healthier alternative to regular potato chips because they contain less fat due to the baking process. However, they are still a processed snack and might not be the healthiest option, especially for a school-age group. The high sodium content in many baked chips is also a concern for cardiovascular health.
Choice B rationale:
A milkshake made with whole milk might provide essential nutrients like calcium and protein, but it is also high in calories and can be loaded with sugar, especially if additional sugars or syrups are added. Consuming sugary beverages in excess can contribute to weight gain and dental issues.
Choice C rationale:
"Air-popped popcorn." This is the correct answer. Air-popped popcorn is a healthy whole-grain snack option. It is low in calories, high in fiber, and can be a good source of antioxidants. It is important to note that while air-popped popcorn is healthy, adding excessive butter, salt, or sugar can diminish its nutritional value.
Choice D rationale:
Cheesecake is a rich, high-calorie dessert that is not considered a healthy snack option. It is high in saturated fats, sugars, and calories, making it an occasional treat rather than a suitable healthy snack choice for school-age children.
Correct Answer is A
Explanation
Choice A rationale:
Consuming foods high in bran fiber can help regulate bowel movements and alleviate symptoms of irritable bowel syndrome (IBS). Fiber adds bulk to the stool and can prevent constipation, a common symptom in IBS patients. Adequate dietary fiber intake is generally recommended for individuals with IBS.
Choice B rationale:
Increasing intake of foods high in gluten might worsen symptoms in individuals with gluten sensitivity or celiac disease. Gluten-containing foods can trigger gastrointestinal distress in susceptible individuals and should be avoided if gluten intolerance is present.
Choice C rationale:
Some individuals with IBS are lactose intolerant, which means they have difficulty digesting milk products. Increasing intake of milk products can exacerbate symptoms such as bloating, gas, and diarrhea in these individuals. It is important to assess the client's tolerance to lactose-containing foods before recommending their consumption.
Choice D rationale:
Sweetening foods with fructose corn syrup may worsen symptoms in individuals with IBS. Fructose is a type of sugar that can cause gastrointestinal distress in some people, especially those with fructose malabsorption. Recommending sweeteners with low fructose content would be more appropriate for individuals with IBS.
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