Antimicrobials Practice Questions

Q: A 68-year-old woman comes to the physician for evaluation of diminished vision for several months. Twenty-eight years ago, she was diagnosed with systemic lupus erythematosus, which has been well controlled with hydroxychloroquine. Fundoscopic examination shows concentric rings of hypopigmentation and hyperpigmentation surrounding the fovea bilaterally. Visual field examination of this patient is most likely to show which of the following findings?

Paracentral scotoma. ***Paracentral scotoma*** - The fundoscopic findings of **concentric rings of hypopigmentation and hyperpigmentation surrounding the fovea** (bull's-eye maculopathy) are characteristic of **hydroxychloroquine toxicity**. - **Hydroxychloroquine toxicity** typically causes a **paracentral scotoma**, meaning loss of vision in an area adjacent to the central point of vision. *Right monocular blindness* - This would indicate a problem with the **right optic nerve** or the right eye itself, affecting all vision in that eye. - It is not a typical finding for **hydroxychloroquine retinopathy**, which primarily affects the macula. *Bitemporal hemianopia* - This visual field defect is characterized by loss of vision in the **outer (temporal) halves of both visual fields**. - It is typically caused by compression of the **optic chiasm**, often by a **pituitary tumor**, not by retinal toxicity from hydroxychloroquine. *Homonymous hemianopia* - This involves loss of vision in the **same half of the visual field in both eyes** (e.g., losing the right half of vision in both eyes). - This defect indicates a lesion **posterior to the optic chiasm** (e.g., in the optic tract, lateral geniculate nucleus, optic radiations, or visual cortex). *Binasal hemianopia* - This involves loss of vision in the **inner (nasal) halves of both visual fields**. - This rare defect can be caused by lesions compressing the **uncrossed nasal fibers** of both optic nerves, usually due to bilateral internal carotid artery aneurysms.

Q: A 31-year-old male traveler in Thailand experiences fever, headache, and excessive sweating every 48 hours. Peripheral blood smear shows trophozoites and schizonts indicative of Plasmodia infection. The patient is given chloroquine and primaquine. Primaquine targets which of the following Plasmodia forms:

Hypnozoite. ***Hypnozoite*** - **Primaquine** is a **radical cure** for malaria caused by *Plasmodium vivax* and *Plasmodium ovale* because it targets the dormant **hypnozoite** forms in the liver. - The presence of **hypnozoites** leads to relapses, as they can reactivate and re-initiate the erythrocytic cycle. *Schizont* - **Schizonts** are merozoite-producing forms in red blood cells (**erythrocytic schizonts**) or liver cells (**hepatic schizonts**). - While chloroquine targets **erythrocytic schizonts**, primaquine's primary unique action is against the dormant liver stages. *Trophozoite* - **Trophozoites** are the feeding and growing stages of the parasite within red blood cells, which mature into schizonts. - **Chloroquine** is highly effective against **erythrocytic trophozoites** and schizonts, resolving acute malarial symptoms. *Merozoite* - **Merozoites** are released from ruptured schizonts and infect new red blood cells during the erythrocytic cycle. - No specific antimalarial drug solely targets **merozoites** as a primary form; they are an infective stage for red blood cells. *Sporozoite* - **Sporozoites** are the forms injected by infected mosquitoes, which then travel to the liver and infect hepatocytes. - While some drugs like atovaquone have activity against sporozoites, primaquine is specifically indicated for destroying the **hypnozoite** stage, preventing relapses.

Q: A 71-year-old man with colon cancer presents to his oncologist because he has been experiencing photosensitivity with his current chemotherapeutic regimen. During the conversation, they decide that his symptoms are most likely a side effect of the 5-fluorouracil he is currently taking and decide to replace it with another agent. The patient is curious why some organs appear to be especially resistant to chemotherapy whereas others are particularly susceptible to chemotherapy. Which of the following cell types would be most resistant to chemotherapeutic agents?

Cardiac myocytes. ***Cardiac myocytes*** - **Cardiac myocytes** are highly differentiated, **terminally differentiated cells** that rarely divide, making them inherently resistant to chemotherapeutic agents which primarily target rapidly dividing cells. - Their **low mitotic activity** means they are less susceptible to agents that interfere with DNA replication, cell division, or other cell cycle-dependent processes. *Hematopoietic cells* - **Hematopoietic cells** in the bone marrow are among the most **rapidly dividing cells** in the body, making them extremely susceptible to chemotherapy. - Damage to these cells leads to **myelosuppression**, a common and serious side effect of chemotherapy. *Liver hepatocytes* - **Hepatocytes** have a **moderate proliferative capacity**, allowing for regeneration, but they are still more susceptible to chemotherapy than terminally differentiated cells. - While they can regenerate, they are particularly vulnerable to hepatotoxic chemotherapy agents due to their role in **drug metabolism** and detoxification. *Enterocytes* - **Enterocytes** of the small intestine lining have a **very high turnover rate**, making them highly sensitive to chemotherapeutic agents. - This sensitivity explains common side effects like **mucositis**, diarrhea, and nausea due to damage to the intestinal lining. *Hair follicle cells* - **Hair follicle cells** are also characterized by their rapid division and high metabolic activity, which makes them very vulnerable to chemotherapy. - Damage to these cells leads to **alopecia** (hair loss), a well-known side effect of many chemotherapeutic regimens.

Q: A 20-year-old man presents with a tremor involving his upper limbs for the past 3 weeks. He says his symptoms have been progressively worsening. Past medical history is significant for 2 episodes of undiagnosed jaundice over the last year. No significant family history. His temperature is 36.9°C (98.4°F), the pulse is 82/min, the blood pressure is 116/78 mm Hg, and the respiratory rate is 12/min. On physical examination, there is excessive salivation, and he has an expressionless face. He has an ataxic gait accompanied by asymmetric resting and kinetic tremors. Hepatomegaly is evident. There is a greenish-gold limbal ring in both corneas. After laboratory findings confirm the diagnosis, the patient is prescribed a medication that he is warned may worsen his tremors. The patient is also instructed to return in a week for a complete blood count and urinalysis. Which of the following additional adverse effects may be expected in this patient while taking this medication?

Myasthenia gravis. ***Myasthenia gravis*** - This patient's symptoms (tremor, excessive salivation, expressionless face, ataxic gait, hepatomegaly, greenish-gold limbal rings) are highly suggestive of **Wilson's disease**, a disorder of copper metabolism. The described medication is likely **D-penicillamine**, a copper-chelating agent used to treat Wilson's Disease. - **D-penicillamine** is associated with various adverse effects, including autoimmune conditions such as drug-induced **myasthenia gravis**, characterized by muscle weakness. *Weight gain* - **Weight gain** is not a typical adverse effect of D-penicillamine. - While D-penicillamine can cause gastrointestinal issues, it is not commonly linked to significant changes in weight. *Pulmonary fibrosis* - **Pulmonary fibrosis** is a rare but serious adverse effect associated with D-penicillamine, but it is less common than autoimmune reactions. - Other medications, such as amiodarone or methotrexate, are more commonly associated with drug-induced pulmonary fibrosis. *Constipation* - **Constipation** is not a commonly reported adverse effect of D-penicillamine. - Gastrointestinal side effects like nausea, vomiting, and diarrhea are more typical. *Sensorineural deafness* - **Sensorineural deafness** is not a known adverse effect of D-penicillamine. - Ototoxicity leading to hearing loss is more commonly associated with medications like aminoglycoside antibiotics or platinum-based chemotherapeutics.

Q: A 55-year-old man, who was recently diagnosed with tuberculosis, presents to his primary care provider as part of his routine follow-up visit every month. He is currently in the initial phase of anti-tubercular therapy. His personal and medical histories are relevant for multiple trips to Southeast Asia as part of volunteer activities and diabetes of 5 years duration, respectively. A physical examination is unremarkable except for a visual abnormality on a color chart; he is unable to differentiate red from green. The physician suspects the visual irregularity as a sign of toxicity due to one of the drugs in the treatment regimen. Which of the following is the mechanism by which this medication acts in the treatment of Mycobacterium tuberculosis?

Inhibition of arabinosyltransferase. ***Inhibition of arabinosyltransferase*** - The patient's inability to differentiate red from green is a classic symptom of **optic neuritis** (specifically retrobulbar neuritis), a known side effect of **ethambutol**. - **Ethambutol** works by inhibiting **arabinosyltransferase**, an enzyme essential for the synthesis of the mycobacterial cell wall component **arabinogalactan**. *Inhibition of DNA-dependent RNA polymerase* - This is the mechanism of action for **rifampin**, another first-line anti-TB drug. - While rifampin has various side effects (e.g., **hepatotoxicity**, **red-orange discoloration of bodily fluids**), **optic neuritis** is not its primary or common adverse effect. *Inhibition of protein synthesis by binding to the 30S ribosomal subunit* - This mechanism is characteristic of **aminoglycosides** (e.g., streptomycin, amikacin) and **tetracyclines**, which are used in certain TB regimens, especially for **drug-resistant cases**. - Common side effects include **ototoxicity** and **nephrotoxicity**, not optic neuritis. *Inhibition of mycolic acid synthesis* - This describes the mechanism of action of **isoniazid**, a cornerstone anti-TB drug. - Isoniazid's main side effects are **hepatotoxicity** and **peripheral neuropathy**, which is often prevented by **pyridoxine (vitamin B6) supplementation**. *Induction of free radical metabolites* - This is the mechanism by which **pyrazinamide** is thought to act, although its precise mechanism is not fully understood. - Pyrazinamide is primarily associated with **hepatotoxicity** and **hyperuricemia** leading to **gout**, not optic neuritis.

Q: A 32-year-old man is brought to the emergency department with fever, dyspnea, and impaired consciousness. His wife reports that he has also had an episode of dark urine today. Two weeks ago, he returned from a trip to the Republic of Congo. His temperature is 39.4°C (103°F), pulse is 114/min, and blood pressure is 82/51 mm Hg. Physical examination shows scleral icterus. Decreased breath sounds and expiratory crackles are heard on auscultation of the lungs bilaterally. His hemoglobin concentration is 6.3 g/dL. A blood smear shows red blood cells with normal morphology and ring-shaped inclusions. Further laboratory testing shows normal rates of NADPH production. Which of the following is the most appropriate pharmacotherapy for this patient?

Artesunate. ***Artesunate*** - This patient presents with **severe malaria**, indicated by fever, impaired consciousness, hypotension, dyspnea, dark urine (hemoglobinuria), scleral icterus (hemolysis), and anemia, following travel to an endemic area (Republic of Congo). The blood smear finding of **ring-shaped inclusions** with normal red cell morphology is characteristic of **Plasmodium falciparum** infection. - **Artesunate** is the drug of choice for **severe malaria** due to its rapid parasitic clearance and superior efficacy compared to other antimalarials, especially in regions with high chloroquine resistance, as is typical in the Republic of Congo for *P. falciparum*. *Proguanil* - Proguanil is primarily used in **malaria prophylaxis** or in combination with other drugs (e.g., atovaquone-proguanil) for uncomplicated malaria. - It is not indicated as monotherapy for **severe *P. falciparum* malaria**, nor is it suitable for emergency treatment of life-threatening infections. *Dapsone* - Dapsone is an **antibiotic** primarily used in the treatment of **leprosy** and prevention of *Pneumocystis jirovecii* pneumonia or toxoplasmosis in immunocompromised patients. - It has **no significant role** in the treatment of malaria, especially severe *P. falciparum* infection. *Chloroquine* - Chloroquine was historically a first-line treatment for malaria but is largely ineffective against **chloroquine-resistant *P. falciparum***, which is widely prevalent in the Republic of Congo and contributes to severe disease. - Administering chloroquine in this context would likely lead to **treatment failure** and worsening of the patient's severe condition. *Atovaquone* - Atovaquone, usually combined with proguanil (Malarone), is effective for **uncomplicated malaria** and prophylaxis. - However, it is **not the preferred agent for severe malaria** due to slower action and lack of intravenous formulation for initial critical management.

Q: A 55-year-old male with a 60 pack-year smoking history presents to his oncologist for ongoing management of his recently diagnosed small cell lung cancer. His oncologist discusses several options and decides to start the chemotherapeutic medication, etoposide. The patient is warned that one side effect of this drug is myelosuppression so he should be vigilant for development of any infectious symptoms. The beneficial effect of this drug in treating cancer is most likely due to which of the following effects?

Inhibition of supercoil relaxation. ***Inhibition of supercoil relaxation*** - **Etoposide** is a **topoisomerase II inhibitor**, preventing DNA uncoiling and replication, thus causing DNA strand breaks and **apoptosis** in rapidly dividing cancer cells. - This mechanism specifically targets the enzyme responsible for managing the topological state of DNA, a crucial process during cell division. *DNA intercalation* - **DNA intercalation** involves drugs inserting themselves between the base pairs of DNA, distorting its structure and inhibiting replication and transcription (e.g., **doxorubicin**). - This is not the primary mechanism of action for **etoposide**, which directly interferes with topoisomerase II enzymes. *Crosslinking of DNA* - **Crosslinking of DNA** involves forming covalent bonds within or between DNA strands, preventing DNA replication and transcription (e.g., **cisplatin**, **cyclophosphamide**). - While effective in chemotherapy, this mechanism is characteristic of **alkylating agents** and is distinct from how etoposide operates. *Stabilization of microtubules* - **Stabilization of microtubules** (e.g., **paclitaxel**, **docetaxel**) or destabilization (e.g., **vincristine**, **vinblastine**) are mechanisms of **microtubule-targeting agents** that disrupt cell division. - **Etoposide** does not primarily affect microtubules but rather targets **DNA topoisomerases**. *Alkylation of DNA* - **Alkylation of DNA** involves the addition of an alkyl group to DNA bases, leading to DNA damage, miscoding, and ultimately cell death. - This mechanism is typical of **alkylating agents** like **cyclophosphamide** and **busulfan**, but it is not the primary mode of action for **etoposide**.

Q: A 23-year-old woman is brought to the emergency department 30 minutes after stepping on a piece of broken glass. Physical examination shows a 3-cm, ragged laceration on the plantar aspect of the left foot. The physician uses hydrogen peroxide to clean the wound. Which of the following is the most likely mechanism of action of this disinfectant?

Formation of free radicals. ***Formation of free radicals*** - **Hydrogen peroxide** acts as an **oxidizing agent**, generating highly reactive **oxygen-free radicals** (e.g., superoxide, hydroxyl radicals) that damage microbial cellular components. - This **oxidative damage** disrupts proteins, lipids, and nucleic acids, leading to bacterial and viral cell death. *Intercalation of DNA* - This mechanism is characteristic of certain **chemotherapeutic agents** (e.g., doxorubicin, ethidium bromide) and some **antimicrobials**, which insert themselves between DNA base pairs, disrupting replication and transcription. - Hydrogen peroxide does not typically target DNA in this manner for its disinfectant action. *Crosslinking of proteins* - This mechanism is characteristic of **aldehydes** like **formaldehyde** and **glutaraldehyde**, which form covalent bonds between amino groups of proteins, denaturing them and disrupting cellular function. - While hydrogen peroxide can modify proteins, its primary disinfectant action is not through widespread protein crosslinking. *Halogenation of nucleic acids* - This mechanism is primarily associated with **halogens** such as **chlorine** and **iodine**, which react with nucleic acids to form halogenated compounds, thereby inactivating them. - Hydrogen peroxide, while an oxidizer, does not lead to halogenation as its primary mode of action. *Congealing of cytoplasm* - This mechanism, which refers to the coagulation or solidification of cellular contents, is typical of **alcohols** (e.g., ethanol, isopropanol) and some **heavy metal salts** that denature proteins and lipids, leading to cell lysis. - Hydrogen peroxide's action is more specific to oxidative damage rather than general cytoplasmic congealing.

Q: A 19-year-old woman presents with abdominal pain and diarrhea for the last week. She has missed 3 days of school and is extremely stressed about the effect of this absence on her academic performance. She has had a couple of similar though less intense episodes in the past. She says that the diarrhea alternates with constipation and is associated with bloating and flatus. She describes the abdominal pain as spasmodic and episodic, sometimes radiating to the legs, with each episode lasting for 10–15 minutes and relieved by defecation. The patient denies any change in the color of her feces, increased frequency of urination or burning during micturition, loss of appetite or weight loss. No significant past medical history. No significant family history. Physical examination is unremarkable. Laboratory investigations are normal. Which of the following would the best choice to manage the diarrheal symptoms in this patient?

Loperamide. ***Loperamide*** - This patient presents with symptoms consistent with **Irritable Bowel Syndrome (IBS)**, characterized by chronic abdominal pain, bloating, and altered bowel habits (diarrhea alternating with constipation), exacerbated by stress. - **Loperamide** is an **opioid receptor agonist** that decreases gut motility and fluid secretion, effectively treating the **diarrheal component** of IBS without causing central nervous system effects. *Dicyclomine* - **Dicyclomine** is an **anticholinergic/antispasmodic** agent used to reduce **abdominal pain and cramping** in IBS by relaxing smooth muscle in the gut. - While it can help with the spasmodic pain described, it is not the best choice for managing the *diarrheal symptoms* specifically, which is what the question asks for. *Sulfasalazine* - **Sulfasalazine** is an **anti-inflammatory drug** primarily used in the treatment of **inflammatory bowel disease (IBD)** like ulcerative colitis and Crohn's disease, as well as rheumatoid arthritis. - The patient's presentation with normal laboratory investigations and absence of red flag symptoms (e.g., weight loss, nocturnal symptoms, blood in stool) makes IBD unlikely. *Norfloxacin + metronidazole* - This combination is an antibiotic regimen typically used for treating **bacterial gastroenteritis** or specific parasitic infections. - The patient's symptoms are chronic and recurrent, not acute infectious, and laboratory investigations are normal, making bacterial infection an unlikely cause. *Metronidazole* - **Metronidazole** is an antibiotic effective against certain **anaerobic bacteria and parasites** (e.g., *Giardia*, *Clostridium difficile*). - Given the chronic nature of the symptoms, normal labs, and absence of specific infectious indicators, metronidazole is not indicated as a primary treatment.

Question 1

A 68-year-old woman comes to the physician for evaluation of diminished vision for several months. Twenty-eight years ago, she was diagnosed with systemic lupus erythematosus, which has been well controlled with hydroxychloroquine. Fundoscopic examination shows concentric rings of hypopigmentation and hyperpigmentation surrounding the fovea bilaterally. Visual field examination of this patient is most likely to show which of the following findings?

Accepted Answer

Paracentral scotoma

Answer

Right monocular blindness

Answer

Bitemporal hemianopia

Answer

Homonymous hemianopia

Answer

Binasal hemianopia

Question 2

A 55-year-old woman presents to the physician because of a fever 4 days after discharge from the hospital following induction chemotherapy for acute myeloid leukemia (AML). She has no other complaints and feels well otherwise. Other than the recent diagnosis of AML, she has no history of a serious illness. The temperature is 38.8°C (101.8°F), the blood pressure is 110/65 mm Hg, the pulse is 82/min, and the respirations are 14/min. Examination of the catheter site, skin, head and neck, heart, lungs, abdomen, and perirectal area shows no abnormalities. The results of the laboratory studies show:
Hemoglobin 9 g/dL
Leukocyte count 800/mm3
Percent segmented neutrophils 40%
Platelet count 85,000/mm3
Which of the following is the most appropriate pharmacotherapy at this time?

Accepted Answer

Imipenem

Answer

Valacyclovir

Answer

Vancomycin

Answer

Caspofungin

Answer

Ciprofloxacin

Question 3

A 31-year-old male traveler in Thailand experiences fever, headache, and excessive sweating every 48 hours. Peripheral blood smear shows trophozoites and schizonts indicative of Plasmodia infection. The patient is given chloroquine and primaquine. Primaquine targets which of the following Plasmodia forms:

Accepted Answer

Hypnozoite

Answer

Schizont

Answer

Trophozoite

Answer

Merozoite

Answer

Sporozoite

Question 4

A 71-year-old man with colon cancer presents to his oncologist because he has been experiencing photosensitivity with his current chemotherapeutic regimen. During the conversation, they decide that his symptoms are most likely a side effect of the 5-fluorouracil he is currently taking and decide to replace it with another agent. The patient is curious why some organs appear to be especially resistant to chemotherapy whereas others are particularly susceptible to chemotherapy. Which of the following cell types would be most resistant to chemotherapeutic agents?

Accepted Answer

Cardiac myocytes

Answer

Hematopoietic cells

Answer

Liver hepatocytes

Answer

Enterocytes

Answer

Hair follicle cells

Question 5

A 20-year-old man presents with a tremor involving his upper limbs for the past 3 weeks. He says his symptoms have been progressively worsening. Past medical history is significant for 2 episodes of undiagnosed jaundice over the last year. No significant family history. His temperature is 36.9°C (98.4°F), the pulse is 82/min, the blood pressure is 116/78 mm Hg, and the respiratory rate is 12/min. On physical examination, there is excessive salivation, and he has an expressionless face. He has an ataxic gait accompanied by asymmetric resting and kinetic tremors. Hepatomegaly is evident. There is a greenish-gold limbal ring in both corneas. After laboratory findings confirm the diagnosis, the patient is prescribed a medication that he is warned may worsen his tremors. The patient is also instructed to return in a week for a complete blood count and urinalysis. Which of the following additional adverse effects may be expected in this patient while taking this medication?

Accepted Answer

Myasthenia gravis

Answer

Weight gain

Answer

Pulmonary fibrosis

Answer

Constipation

Answer

Sensorineural deafness

Question 6

A 55-year-old man, who was recently diagnosed with tuberculosis, presents to his primary care provider as part of his routine follow-up visit every month. He is currently in the initial phase of anti-tubercular therapy. His personal and medical histories are relevant for multiple trips to Southeast Asia as part of volunteer activities and diabetes of 5 years duration, respectively. A physical examination is unremarkable except for a visual abnormality on a color chart; he is unable to differentiate red from green. The physician suspects the visual irregularity as a sign of toxicity due to one of the drugs in the treatment regimen. Which of the following is the mechanism by which this medication acts in the treatment of Mycobacterium tuberculosis?

Accepted Answer

Inhibition of arabinosyltransferase

Answer

Inhibition of DNA-dependent RNA polymerase

Answer

Inhibition of protein synthesis by binding to the 30S ribosomal subunit

Answer

Inhibition of mycolic acid synthesis

Answer

Induction of free radical metabolites

Question 7

A 32-year-old man is brought to the emergency department with fever, dyspnea, and impaired consciousness. His wife reports that he has also had an episode of dark urine today. Two weeks ago, he returned from a trip to the Republic of Congo. His temperature is 39.4°C (103°F), pulse is 114/min, and blood pressure is 82/51 mm Hg. Physical examination shows scleral icterus. Decreased breath sounds and expiratory crackles are heard on auscultation of the lungs bilaterally. His hemoglobin concentration is 6.3 g/dL. A blood smear shows red blood cells with normal morphology and ring-shaped inclusions. Further laboratory testing shows normal rates of NADPH production. Which of the following is the most appropriate pharmacotherapy for this patient?

Accepted Answer

Artesunate

Answer

Proguanil

Answer

Dapsone

Answer

Chloroquine

Answer

Atovaquone

Question 8

A 55-year-old male with a 60 pack-year smoking history presents to his oncologist for ongoing management of his recently diagnosed small cell lung cancer. His oncologist discusses several options and decides to start the chemotherapeutic medication, etoposide. The patient is warned that one side effect of this drug is myelosuppression so he should be vigilant for development of any infectious symptoms. The beneficial effect of this drug in treating cancer is most likely due to which of the following effects?

Accepted Answer

Inhibition of supercoil relaxation

Answer

DNA intercalation

Answer

Crosslinking of DNA

Answer

Stabilization of microtubules

Answer

Alkylation of DNA

Question 9

A 23-year-old woman is brought to the emergency department 30 minutes after stepping on a piece of broken glass. Physical examination shows a 3-cm, ragged laceration on the plantar aspect of the left foot. The physician uses hydrogen peroxide to clean the wound. Which of the following is the most likely mechanism of action of this disinfectant?

Accepted Answer

Formation of free radicals

Answer

Intercalation of DNA

Answer

Crosslinking of proteins

Answer

Halogenation of nucleic acids

Answer

Congealing of cytoplasm

Question 10

A 19-year-old woman presents with abdominal pain and diarrhea for the last week. She has missed 3 days of school and is extremely stressed about the effect of this absence on her academic performance. She has had a couple of similar though less intense episodes in the past. She says that the diarrhea alternates with constipation and is associated with bloating and flatus. She describes the abdominal pain as spasmodic and episodic, sometimes radiating to the legs, with each episode lasting for 10–15 minutes and relieved by defecation. The patient denies any change in the color of her feces, increased frequency of urination or burning during micturition, loss of appetite or weight loss. No significant past medical history. No significant family history. Physical examination is unremarkable. Laboratory investigations are normal. Which of the following would the best choice to manage the diarrheal symptoms in this patient?

Accepted Answer

Loperamide

Answer

Dicyclomine

Answer

Sulfasalazine

Answer

Norfloxacin + metronidazole

Answer

Metronidazole

Antimicrobials — MCQs

Antimicrobials — MCQs

On this page

Practice by Chapter

Want unlimited practice?