Test on Chronic Hand and Upper Extremity Infections
Chronic Hand & Upper Extremity Infections: Student Guide
Test: Hand infections — Clinical syndromes, Hand infections — Microbiology & lab, Viral infections, Mycetoma and hand infections, Sexually transmitted infections, Fungal infections of the hand, Fungal skin and systemic infections, Cutaneous and Lymphocutaneous Infections, Leprosy overview & nomenclature, Leprosy clinical features, Leprosy diagnosis & investigations, Leprosy treatment & management, Leprosy reactions & nerve complications, Mycobacterial infections: tuberculosis, Mycobacterial infections: hand and soft tissue, Mycobacterial infections: skin and cutaneous, Mycobacterial infections: musculoskeletal, Parasitic and other tropical infections, HIV/AIDS
20 questions
Question 1: Treatment for tuberculosis hand infection always begins with a two-drug regimen of isoniazid and rifampin.
A. Ano
B. Ne
Explanation: Initial treatment for tuberculosis hand infection begins with a four-drug regimen (isoniazid, rifampin, pyrazinamide, ethambutol) for the first two months. A two-drug regimen is only resumed after this initial period if the bacillus is sensitive to both drugs.
Question 2: When culturing mycobacteria from a suspected chronic hand infection, which of the following organisms requires incubation at a temperature significantly higher than average body temperature for optimal growth?
A. M. marinum
B. M. tuberculosis
C. M. xenopi
D. M. haemophilum
Explanation: M. marinum and M. haemophilum grow at 25°C to 30°C (room temperature), which is lower than body temperature. M. tuberculosis and other NTM (Non-Tuberculous Mycobacteria) generally grow at 37°C (body temperature). M. xenopi, however, grows best at 42°C, which is notably higher than average body temperature.
Question 3: The optimal treatment for cutaneous Mycobacterium marinum infection is well established.
A. Ano
B. Ne
Explanation: The study materials state that the "Optimal treatment of cutaneous M. marinum infection is not well established."
Question 4: According to the study materials, which of the following antibiotics have shown emerging resistance when used to treat cutaneous Mycobacterium marinum infection?
A. Tetracycline
B. Amikacin
C. Minocycline
D. Ethambutol and rifampin combination
Explanation: The study materials state, 'Resistance to tetracycline, minocycline, doxycyline, rifampin, and cotrimoxazole is emerging.' Amikacin and the combination of ethambutol and rifampin are listed as successfully used regimens, but not specifically noted for emerging resistance in the context of M. marinum treatment in this text.
Question 5: M. marinum joint infections are typically differentiated from M. tuberculosis infections primarily through radiographic findings.
A. Ano
B. Ne
Explanation: Joint infections with M. tuberculosis and M. marinum can usually be differentiated by history, specifically traumatic exposure to salt water or a fish tank, not primarily through radiographic findings.