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38 Cards in this Set
- Front
- Back
4-Aminoquinoline derivatives
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Antimalarial Agents that bind to nucleoproteins and interfere with protein synthesis
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Anthelmintic
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Drug used to treat parasitic worm infections
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Antimalarial
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Drug that destroys or prevents the development of plasmodia in human hosts
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Antiprotozoal
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Drug that destroys or prevents the development of single-celled microorganisms of the sub kingdom protozoa in human host
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Erythrocytic phase
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Phase of asexual cycle of the parasite that occurs inside the erythrocyte.
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Exoerythrocytic phase
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Phase of the asexual cycle of the parasite that occurs outside of the erythrocyte.
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Helminthic infection
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Parasitic worm infection
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Malaria
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Most significant protozoal disease in terms of morbidity and mortality. Transmitted by infected female mosquito, blood transfusions, congenitally, or by contaminated drug users.
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Parasite
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Organism that feeds on another living organism.
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Parasitic protozoa
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Protozoa that live on or in human beings.
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Plasmodium
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Genus of protozoa that cause malaria.
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What signs should patients report immediately with Antimalarials?
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Tinnitus (ringing of the ears)
Hearing decrease (loss) Visual difficulties |
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What should patients be told to do to decrease gastrointestinal upset with Antimalarials?
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Take oral medications with food.
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What may Quinidine products cause as side effects?
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Dizziness, visual blurring, yellow discoloration of the skin, seizures, and dysrhythmias.
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What should patient's know to expect from Metronidazole (antiprotozoal)?
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It may leave a metallic taste in the mouth, and that urine may turn dark.
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What type of food should Atovaquone (antiprotozoal) be taken with and why?
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Fatty foods to increase plasma drug concentration.
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What should patient's taking Antihelmintics report immediately?
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Fatigue, fever, pallor, anorexia, darkened urine, and abdominal, leg, or back pain, which could indicate a sudden decrease in RBCs, Hgb, or WBCs.
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Common protozoal infections
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Amebiasis, giardiasis, pneumocytosis, toxoplasmosis, and trichomoniasis.
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What are the most toxic protozoal infections caused by?
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Cryptosporidium spp., Isospora belli, Pneumocystis carinii, and Toxoplasma gondii.
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What four ways are protozoa transmitted?
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Person-to-person contact
Ingestion of contaminated water or food Direct contact with the parasite The bite of an insect (mosquito or tick) |
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What drugs are used to treat P. carinii infections?
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Atovaquone and pentamidine
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What drug is antibacterial, antiprotozoal, and anthelmintic?
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Metronidazole
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Which drugs directly kill protozoa such as Entamoeba histolytica?
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Iodoquinol and paromomycin
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Anthelmintics are used to treat parasitic worm infections caused by?
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Cestodes (tapeworms)
Nematodes (roundworms) Trematodes (flukes) |
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What ways can you identify the causative worm?
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Finding parasite ova or larvae in feces, urine, blood, sputum or tissue
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How do anthelmintic drugs work?
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They kill parasite directly or cause it to be expelled from the body.
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What are contraindications to the use of antimalarial agents?
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Pregnancy, psoriasis, porphyria, G6PD deficiency, and a history of drug allergy.
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What are contraindications to the use of antiprotozoal agents?
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Hypersensitivity, underlying renal, cardiac, thyroid, or liver disease, and pregnancy.
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What are contraindications to the use of anthelmintic agents?
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History of hypertension; hypersensitivity; visual difficulty; intestinal obstruction; inflammatory bowel disease; malaria; severe hepatic, renal, or cardiac disease; and pregnancy.
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What are s/sx of Malaria?
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Chills, profound sweating,h/a, n, joint aching, fatigue/exhaustion.
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What drugs are only effective either during the erythrocytic phase or the exoerythocytic phase?
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Antimalaria drugs
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Chloroquine, hydroxychloroquine, and pyrimethmine are effective during which phase?
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Erythrocytic phase
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What agent is one of the few that is effective in the exoerythrocytic phase?
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Primaquine
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How does Chloroquine and hydroxychloroquine work?
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They bind to nucleoproteins in the organism and interfere with protein synthesis and inhibit DNA and RNA synthesis, thereby killing the organism.
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What are S/E of Antimalarials?
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Diarrhea, anorexia, nausea, vomiting, abdominal distress, alopecia, dizziness, increased anxiety, rash, pruritus, headache.
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What is Mefloquine used to treat?
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Mild to moderate acute malaria and for the prevention and treatment of chloroquine resistant malaria and multiple drug resistant strains of P. falciparum.
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What are the S/E of Mefloquine (antimalarial)?
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CNS: h/a, dizziness, insomnia, visual disturbances, increased anxiety, convulsions, depression, and psychosis.
GI: n/v/d, abdominal pain or discomfort. |
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What does Quinine treat and in which form?
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Oral form only indicated for the treatment of mild attacks. Paraenteral forms for the nanagement of acute attacks of multiple drug resistant P. falciparum.
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