Exam 4 Flashcards
Penicillin: Amoxicillin
Action:
block bacterial cell wall formation
Penicillin: Amoxicillin
Use:
Treatment of gram-positive infection (mostly staph/strep). Also, it is the drug of choice for the treatment of syphilis.
Penicillin: Amoxicillin
SEs/ADRs:
o Nasua, vomiting, and diarrhea.
o Superinfection
o Bleeding
o Tongue/tooth discoloration
Penicillin: Amoxicillin
Contraindications:
o Allergy to PCN (penicillin)/cephalosporins
o Caution with renal impairment
Penicillin: Amoxicillin
Interactions:
o Dec effectiveness of OCPs
o Inc bleeding with anticoagulants
o Dec effect of the drug with acidic fruits and juices.
Penicillin: Amoxicillin
Administration:
o Inc fluid intake
o Take with food to decrease GI upset.
Penicillin: Amoxicillin
Nursing Interventions:
o Take Culture & Sensitivity test.
o Monitor signs and symptoms of superinfections.
Signs and Symptoms:
- Stomatitis (mouth ulcer)
- Genital discharge (vaginitis)
- Anal or genital itching
- Examine pt for allergic reaction to PCN product, especially after the 1st and 2nd doses. Mild reactions such as a rash or a severe reaction such as respiratory distress or anaphylaxis.
o Have epinephrine available to counteract a severe allergic reaction.
Cephalosporins: Ceftriaxone (Rocephin)
Action:
Block bacterial cell wall formation
Cephalosporins: Ceftriaxone (Rocephin)
Uses:
1st and 2nd generation mostly work against gram-positive. later generations more effective against gram-negative. Widely used for meningitis/encephalitis.
Used in preop to reduce the risk of surgical site infection.
Cephalosporins: Ceftriaxone (Rocephin)
SEs/ADRs:
o Nausea, vomiting, and diarrhea.
o Dizziness
o Headache
o Superinfection
o Stevens-Johnsons syndrome
Cephalosporins: Ceftriaxone (Rocephin)
Contraindications, Interactions, Administration:
- Contraindications:
o Hepatic/renal failure
o Allergy to cephalosporin - Interactions:
o Inc risk of bleeding with anticoagulants
o Dec effectiveness of OCPs - Administration:
o IM
o IV, if given IV- give over 30 min.
Nursing Process PCN (Amoxicillin)/Cephalosporins (Ceftriaxone):
o Culture up first
o Tell pt to report signs of superinfection.
o Inc intake of yogurt/probiotics to prevent superinfection.
o Inc fluid intake
o Monitor for signs and symptoms of an allergic reaction.
o Use a backup method of birth control if on oral contraceptives.
Sulfa drugs: Trimethoprim-Sulfamethoxazole (TMP-SMX)
Action:
Interferes with bacterial folic acid synthesis
Sulfa drugs: Trimethoprim-Sulfamethoxazole (TMP-SMX)
Uses:
o Treatment of UTIs
o Otitis media
o COPD exacerbation
o PJP (pneumocystis jirovecii pneumonia- fungal infection of the lungs) prophylaxis
o MRSA
o Travelers’ diarrhea
Sulfa drugs: Trimethoprim-Sulfamethoxazole (TMP-SMX)
SEs/ADRs:
o Superinfection
o Liver injury
o Leukopenia
o Thrombocytopenia (low levels of platelets)
o Hyperkalemia
o Hypoglycemia
o Photosensitivity
o Stevens-Johnson syndrome
o Renal insufficiency
Sulfa drugs: Trimethoprim-Sulfamethoxazole (TMP-SMX)
Contraindications:
o Hypersensitivity
o Hepatic/renal impairment
Sulfa drugs: Trimethoprim-Sulfamethoxazole (TMP-SMX)
Interactions:
o Inc potassium with spironolactone, ACEI, A2RBs
o Inc anticoagulant effect with warfarin
o Inc hypoglycemic effect with diabetic drugs
Sulfa drugs: Trimethoprim-Sulfamethoxazole (TMP-SMX)
Administration, Nursing Process:
- Administration:
o IV
o Oral - Nursing Process:
o Culture up first
o Inc fluid intake
o Monitor vital signs.
o Monitor CBC (complete blood count) and BMP (basic metabolic panel)
o Monitor for superinfection.
o AVOID during 3rd trimester of pregnancy.
o Photosensitivity- wear sunglasses/sunblock when outdoors
o Don’t give with antacids.
Antivirals: Acyclovir
Action:
Inhibits viral DNA synthesis
Antivirals: Acyclovir
Use:
o Treatment of herpesvirus infections- especially HSVI/HSVII
o Herpes zoster (shingles)- chicken pox reactivated later in life.
o Varicella zoster virus (chicken pox)
Antivirals: Acyclovir
SEs/ADRs:
o GI upset
o Headache
o Leukopenia
o Hepatitis
o Steven-Johnsons syndrome
o Hypokalemia
Antivirals: Acyclovir
Toxicity:
o Acute renal failure produces acyclovir crystals→kidney stone formation→may cause urinary tract obstruction; proper hydration can minimize risk.
o Neurological toxicity- may induce neuropsychiatric symptoms, including agitation, coma, tremors, and seizure (including status epilepticus).
Antivirals: Acyclovir
Contraindications:
o Use with caution in pts with underlying neurological abnormalities (seizure disorder) or
o Serious hepatic abnormalities
o Electrolyte (K) abnormalities –acyclovir may induce hypokalemia.
Antivirals: Acyclovir
Interactions, Administration:
- Interactions:
o Dec effects of phenytoin - Administration:
o Orally with or without food
o IV: infuse over 1 hr period
o Maintain adequate hydration.