What condition is the most likely cause of a barrel chest?
Chronic alveolar distention
Chronic costochondritis
Smoking
Hypokalemia
The Correct Answer is A
A. Chronic alveolar distention, often seen in conditions like emphysema, leads to the enlargement of the alveoli and results in a barrel-shaped chest. This is due to the loss of elasticity in the lungs, causing air trapping and an increased anterior-posterior diameter of the chest.
B. Chronic costochondritis causes inflammation of the cartilage between the ribs and sternum, leading to localized pain but not a barrel chest.
C. Smoking is a major risk factor for the development of chronic obstructive pulmonary disease (COPD), which can lead to chronic alveolar distention and a barrel chest, but smoking alone is not the direct cause of the chest shape.
D. Hypokalemia affects muscle function, including the muscles involved in respiration, but it does not directly cause a barrel chest.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Oxygen does play a role in maintaining acid-base balance indirectly, as it is required for aerobic metabolism, which produces carbon dioxide that is regulated by the body to maintain acid-base balance. However, this is not its primary role.
B. Oxygen does trigger chemoreceptors, but this is more of a secondary function to regulate breathing based on oxygen and carbon dioxide levels.
C. While oxygen has many roles, its most critical function is providing the necessary support for cellular metabolism, which is vital for energy production in cells.
D. Oxygen is essential for cellular metabolism as it is required for the process of oxidative phosphorylation in mitochondria, which produces ATP, the energy currency of cells.
Correct Answer is A
Explanation
A. Progeria, also known as Hutchinson-Gilford Progeria Syndrome (HGPS), is characterized by accelerated aging. One of the biochemical changes observed in this condition is an increase in hyaluronic acid levels, which is associated with skin changes and the premature aging process seen in affected individuals.
B. Low levels of glutamate are not characteristic of progeria. Glutamate is a neurotransmitter, and its levels are not typically altered in progeria.
C. High levels of thyroxine are not associated with progeria. Thyroxine levels are related to thyroid function, and there is no direct link between high thyroxine levels and progeria.
D. Low levels of calcitonin are not characteristic of progeria. Calcitonin is a hormone involved in calcium regulation, and its levels are not notably altered in progeria.
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.