Juvenile arthritis should be suspected in a child who exhibits
frequent fractures.
joint swelling and pain lasting longer than 6 weeks.
lurching and abnormal gait with limited abduction.
increased joint mobility.
The Correct Answer is B
Juvenile arthritis should be suspected in a child who exhibits joint swelling and pain lasting
longer than 6 weeks. Juvenile arthritis refers to a group of chronic inflammatory conditions
that affect the joints in children and adolescents. Persistent joint swelling and pain are
common symptoms of juvenile arthritis and are often accompanied by other signs such as
morning stiffness, limited range of motion, and joint warmth.
, frequent fractures in (option A) is not correct because it, is not typically associated with
juvenile arthritis. Fractures are more commonly associated with conditions affecting bone
strength, such as osteoporosis or certain genetic disorders.
lurching and abnormal gait with limited abduction in (option A) is not correct because it,
may be seen in certain musculoskeletal conditions or hip joint abnormalities, but it is not
specific to juvenile arthritis.
increased joint mobility in (option D) is incorrect because it, is not typically associated with
juvenile arthritis. In fact, joint stiffness and limited range of motion are more characteristic of
this condition.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Compartment syndrome is a condition that can occur following an injury, such as a fracture, where there is increased pressure within a closed space (compartment) in the body. In the case of a forearm fracture, swelling and increased pressure within the compartment can lead to compression of the nerves and blood vessels, resulting in symptoms such as pain, numbness, and decreased function of the affected muscles.
The inability to extend the fingers suggests impairment of the extensor muscles, which are innervated by the radial nerve. If the radial nerve is compressed or injured due to compartment syndrome, it can result in a loss of function in the muscles it innervates, leading to the inability to extend the fingers.
damage to the epiphyseal plate in (option A) is incorrect because it, is not related to the inability to extend the fingers. The epiphyseal plate is the growth plate in long bones, and damage to it would typically affect bone growth rather than finger extension.
, stating that it is normal following this type of injury in (option B), is incorrect. Inability to extend the fingers is not a normal or expected finding after a forearm fracture. It suggests a potential complication or underlying issue.
fat embolism in (option D) is incorrect because it, is unlikely to cause an inability to extend the fingers. Fat embolism occurs when fat globules from a broken bone enter the bloodstream and can lead to respiratory and neurological symptoms, but it would not specifically cause an isolated loss of finger extension.
Correct Answer is B
Explanation
The regulation of acid-base balance in the body involves multiple systems working together. The respiratory system, renal system, and chemical-buffering systems play key roles in maintaining the balance of acids and bases in the body.
The respiratory system helps regulate acid-base balance through the control of carbon dioxide (CO2) levels in the blood. By adjusting the rate and depth of breathing, the respiratory system can increase or decrease the elimination of CO2, which affects the pH of the blood.
The renal system (kidneys) plays a crucial role in regulating acid-base balance by controlling the excretion and reabsorption of hydrogen ions (H+) and bicarbonate ions (HCO3-) in the urine. The kidneys can excrete excess acids or bases to help maintain the body's pH within a normal range.
The chemical-buffering systems involve various chemical compounds in the body that can absorb or release hydrogen ions to help maintain pH balance. Examples of chemical buffers include bicarbonate ions (HCO3-), phosphate ions (HPO4-), and proteins.
the cardiovascular and integumentary systemin (option A) is incorrect because they, are not primarily responsible for regulating acid-base balance in the body.
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