Antibacterial Medications Flashcards
trimethoprim, trimethoprim/
sulfamethoxazole (Bactrim, Septra) therapeutic use
- Sulfonamides
- Trimethoprim and sulfamethoxazole work together to treat:
- Urinary tract infections
- Pneumocystis pneumonia
- Shigella enteritis (shigellosis, also called traveler’s diarrhea)
- Chronic bronchitis (acute phase)
- Acute otitis media in children
trimethoprim, trimethoprim/
sulfamethoxazole (Bactrim, Septra) adverse reactions
GI symptoms: nausea, vomiting, anorexia
* Allergic skin reactions
* Blood cell deficiencies (thrombocytopenia, leukopenia, anemia,
agranulocytosis, aplastic anemia )
* Superinfection – Clostridium difficile-associated diarrhea (CDAD): or
Candida infections
* Severe rash, including Stevens-Johnson syndrome
* Kernicterus
trimethoprim, trimethoprim/
sulfamethoxazole (Bactrim, Septra) nursing interventions
- Monitor for and report severe symptoms.
- Monitor for rash and hives.
- Monitor for and report severe diarrhea.
- Monitor and report rash and/or blisters on skin to provider.
- Encourage patient to drink plenty of fluids
- Monitor I & O
- Monitor CBCs and Urinalysis throughout treatment
trimethoprim, trimethoprim/
sulfamethoxazole (Bactrim, Septra) medication administration
- Available as a fixed-dose combination in tablets, liquid solution, and IV
form. - Give oral dose with 8 oz. of water.
- Administer intermittent IV infusion slowly (over 60 to 90 min) and with
recommended dilution. - Drink at least 1,200 to 1,500 mL water/day during treatment with this
drug.
trimethoprim, trimethoprim/
sulfamethoxazole (Bactrim, Septra) client education
- Report symptoms to provider.
- Take with food to minimize GI symptoms.
- Report rash and hives to provider.
- Report fatigue, pallor, easy bruising, or new infections to provider.
- Report watery or bloody diarrhea to provider.
- Report pain in mouth, difficulty eating, or vaginal burning/discharge.
- Report onset of rash and/or blisters on the skin to provider.
- Warn clients that sulfonamides decrease the effectiveness of oral
contraceptives; use alternate form of contraception.
trimethoprim, trimethoprim/
sulfamethoxazole (Bactrim, Septra) contraindications and precautions
CONTRAINDICATIONS
* Women who are pregnant or nursing
* Allergy to sulfonamides, trimethoprim, cyclooxygenase-2 inhibitors
(celecoxib [Celebrex])
* Clients with megaloblastic anemia caused by folic acid deficiency
* Children under 2 months
* Pharyngitis caused by group A beta-hemolytic streptococci
* Hyperkalemia
* Severely impaired urine creatinine clearance
PRECAUTIONS
* Decreased kidney or liver function
* Hypersensitivity to sulfites used as preservatives (wine, foods), other
drugs related to sulfonamides (acetazolamide, thiazide diuretics,
tolbutamide)
* Suppressed bone marrow
* Clients at risk for megaloblastic anemia (clients with alcoholism,
pregnant women, clients who are debilitated)
trimethoprim, trimethoprim/
sulfamethoxazole (Bactrim, Septra) interactions
- Alcohol with the drug may cause a disulfiram-type reaction.
- May increase effects of warfarin, phenytoin, tolbutamide (and other
sulfonylurea oral antidiabetic drugs). - Taken with methotrexate, clients may have increased
immunosuppression. - Reduced effectiveness of oral contraceptives (use alternative
contraception).
amoxicillin (Amoxil), amoxicillin/clavulanic acid (Augmentin) therapeutic use
- Penicillins
- Treats broad-spectrum infections caused by gram-positive cocci and
bacilli, such as ear and throat infections and urinary tract infections. - Amoxicillin treats gonorrhea caused by non-penicillinase-producing
bacteria. - Addition of clavulanic acid increases spectrum of disorders treated by
amoxicillin and its ability to kill bacteria.
amoxicillin (Amoxil), amoxicillin/clavulanic acid (Augmentin) adverse reactions
- GI symptoms: diarrhea, nausea, vomiting
- Rarely may cause Clostridium difficile (C. Diff) superinfection (more
frequent with other antibiotics than amoxicillin) - Superinfection with Candida albicans
- Allergy to penicillin (rash, hives, wheezing and difficulty breathing)
amoxicillin (Amoxil), amoxicillin/clavulanic acid (Augmentin) nursing interventions
- Monitor for GI symptoms.
- Monitor and report bloody stools or long-term watery diarrhea.
- Monitor for and report Candida infections of mouth or vagina.
- Expect to treat Candida infections with an antifungal agent.
- Ask clients if they are allergic prior to administering the first dose.
- Monitor for allergy manifestations and notify provider.
- For injectable penicillins (IM or IV), keep client in facility for 30 min after
administration and monitor for allergy. - Prepare to treat rash/hives with antihistamines; anaphylaxis with
epinephrine and respiratory support.
amoxicillin (Amoxil), amoxicillin/clavulanic acid (Augmentin) medication administration
- Client should not crush or chew extended-release form.
- Chew chewable forms before swallowing.
- For infants or young children, place drops directly on tongue or mix
with a small amount of juice or formula; ensure that child takes full
dose. - Give at the beginning of meals to decrease GI symptoms and increase
absorption. - Give amoxicillin with probenecid, if prescribed, to increase therapeutic
activity of amoxicillin.
amoxicillin (Amoxil), amoxicillin/clavulanic acid (Augmentin) client education
- Report watery or bloody diarrhea to provider.
- Take drug at the start of meals.
- Report mouth pain or inability to eat.
- Report vaginal burning, itching, and discharge.
- Stop drug and notify provider for possible allergic reactions.
- Call 911 for severe symptoms, such as difficulty breathing.
amoxicillin (Amoxil), amoxicillin/clavulanic acid (Augmentin) contraindications and precautions
CONTRAINDICATIONS
* Allergy to penicillins, hypersensitivity to procaine and benzathine
PRECAUTIONS
* Renal impairment may need reduced dose
amoxicillin (Amoxil), amoxicillin/clavulanic acid (Augmentin) interactions
- Probenecid increases penicillin blood levels.
- Bacteriostatic agents may decrease therapeutic effects.
- Reduced effectiveness of oral contraceptives.
erythromycin therapeutic use
- Macrolides
First-line of treatment for: - Legionnaires’ disease
- Whooping cough
- Acute diphtheria
- Treatment of clients who are carriers of diphtheria
- Some Chlamydia infections
- Certain pneumonias
- Treats common infections for clients who have a penicillin allergy
- Ophthalmic ointment prevents eye infections in neonates
erythromycin adverse reactions
- GI symptoms: nausea, vomiting, abdominal pain, and diarrhea
- Cardiac symptoms: serious ventricular dysrhythmias can result in death
- Ototoxicity: hearing loss, vertigo, and tinnitus (able to reverse when
treatment ends) - Superinfection (C. diff-associated diarrhea, candidiasis)
erythromycin nursing interventions
- Monitor for and report GI reactions (a decrease in the dose may stop
symptoms). - Monitor for concurrent use of other drugs that increase erythromycin
blood levels. - Question client about history of prolonged QT.
- Monitor for and report signs of ototoxicity.
- Monitor for and report superinfection.
- Monitor liver function in long-term use
erythromycin medication administration
- Available in four forms:
- Erythromycin base: tablets, capsules, topical, and ophthalmic ointment
- Erythromycin stearate: tablets
- Erythromycin ethylsuccinate (EES): tablets
- Erythromycin lactobionate: IV form
- Give erythromycin base and erythromycin stearate on an empty
stomach 1 hr before or 2 hr after a meal for best absorption; give with 8
oz. of water. - If GI symptoms occur, may give with food.
- Give EES enteric-coated forms of erythromycin with or without meals.
- For IV form, follow dilution and rate recommendations to prevent
thrombophlebitis.
erythromycin client educations
- Take with food if GI symptoms occur.
- Report continuing symptoms to provider.
- Report palpitations and fainting spells to the provider.
- Report hearing loss, vertigo, and tinnitus to provider.
- Report bloody or watery diarrhea.
- Report mouth pain with white patches on the oral mucosa, or vaginal
discomfort and discharge.
erythromycin contraindications and precautions
CONTRAINDICATIONS
* Allergy to erythromycin or other macrolide antibiotic
* History of prolonged QT syndrome
* Hypokalemia
* Hypomagnesemia
PRECAUTIONS
* GI disorders
* Liver disorders
erythromycin interactions
- Decreases blood levels of chloramphenicol and clindamycin antibiotics.
- Increases blood levels of multiple drugs, including digoxin, warfarin,
and theophylline. - Drugs that inhibit the enzyme CYP3A4 increase erythromycin levels
(verapamil, azole antifungals, protease inhibitors for HIV, diltiazem)
imipenem (Primaxin) therapeutic use
- Carbapenems
- Treats serious infections caused by multiple types of organisms
imipenem (Primaxin) adverse reactions
- GI symptoms: nausea, vomiting (may occur if IV infusion is too rapid)
- Thrombophlebitis at IV site
- Possible cross-sensitivity with other antibiotics with beta-lactam ring
(penicillins, cephalosporins) - Superinfection
imipenem (Primaxin) nursing interventions
- Follow recommendation rate when infusing IV form.
- Monitor for nausea during infusion; treat with antiemetic.
- Monitor IV site for redness and swelling during infusion.
- Assess for and report antibiotic allergy prior to infusing imipenem.
- Monitor for secondary infections, such as oral candidiasis.
- Lab testing should include AST, BUN, LDH, as well as testing for bilirubin
and increased creatinine
imipenem (Primaxin) medication administration
- Only available for IM or IV use.
- IM and IV forms are not interchangeable–assure and use the correct
form for prescription. - Follow recommendations for rate and dilution when infusing IV doses.
imipenem (Primaxin) client education
- Report nausea, especially when it occurs during IV infusion.
- Report pain, swelling, or redness at IV site.
- Report all drug allergies to provider.
- Report mouth pain and difficulty chewing and swallowing.
- Report vaginal irritation and discharge.
imipenem (Primaxin) contraindications and precautions
CONTRAINDICATIONS
* Allergy to carbapenems
* Allergy to penicillin
PRECAUTIONS
* Allergy to cephalosporins
* Seizures
* Renal impairment
imipenem (Primaxin) interactions
- Monobactam, penicillin, and cephalosporin antibiotics may decrease
the effects of imipenem. - Probenecid decreases renal excretion and cyclosporine increases the
risk for seizures.