Which of the following situations of altered perfusion could be triggered by chronic obstructive pulmonary disease?
Ventilation perfusion mismatching
Impaired cardiac output
Impaired circulation
Excessive cardiac demand
The Correct Answer is A
A. In chronic obstructive pulmonary disease (COPD), airflow obstruction leads to ventilation-perfusion (V/Q) mismatching. This means that some parts of the lungs may receive air but not enough blood flow, or vice versa, resulting in inefficient gas exchange and reduced oxygenation. This is a hallmark of COPD.
B. While COPD can eventually affect the heart, particularly leading to right heart failure (cor pulmonale), it does not directly impair cardiac output in the early stages. The primary issue in COPD is with lung function.
C. COPD does not directly impair circulation but can lead to pulmonary hypertension and strain on the circulatory system over time. However, impaired circulation is not the primary issue triggered by COPD.
D. COPD may lead to increased work of breathing, but it does not directly cause excessive cardiac demand in the same way that conditions like anemia or sepsis might.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Dehydration increases the risk of renal calculi (kidney stones) because it leads to concentrated urine, which promotes the formation of stones. When there is insufficient fluid intake, the kidneys cannot dilute substances like calcium and oxalate, which can form crystals and eventually stones.
B. A sedentary lifestyle is a risk factor for a variety of health issues, including obesity, but it does not directly increase the risk of kidney stones. Physical inactivity can contribute to weight gain, which in turn may increase the risk of developing stones, but it is not as direct a cause as dehydration.
C. Drinking 32 ounces of milk per day does not directly increase the risk for kidney stones. In fact, moderate calcium intake can help prevent the formation of certain types of kidney stones. However, excessive calcium intake from supplements (rather than food) may increase the risk.
D. Running 5 miles does not increase the risk of kidney stones. In fact, regular physical activity can help prevent the formation of kidney stones by promoting overall health and hydration.
Correct Answer is A
Explanation
A. Alkalemia refers to a condition in which the blood pH is higher than the normal range (7.35–7.45), specifically above 7.45. A pH of 7.5 indicates alkalemia, which is an increase in blood pH.
B. Alkalosis refers to a condition in which the body is in a state of alkalinity, but it is a broader term that can describe either metabolic or respiratory alkalosis. Alkalemia specifically refers to the pH measurement itself.
C. Acidosis refers to a condition in which the blood pH is lower than normal (below 7.35), indicating an excess of hydrogen ions or a deficiency of bicarbonate.
D. Acidemia refers to a condition in which the blood pH is below the normal range, indicating acidosis. A pH of 7.5 does not fall into this category.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.