Family Medicine Case Files wk 5 & 6 Flashcards
When are grass pollens typically present?
- late spring through early fall
- but can be present year-round in warner weather too
Allergic shiners
-dark circles around the eyes related to vasodilation or nasal congestion
When is ragweed present?
-late summer and early fall
Antihistamines: MOA
-competitively antagonize the receptors for histamine, which is released from the mast cells
Decongestants: MOA? Use? Most common one used?
- can be taken orally or intranasally
- constrict the blood vessels of the nasal mucosa and reduce the overall volume of the mucosa
- pseudophedrine is the most commonly used
What can happen with chronic use of nasal decongestants?
-rebound hyperemia and worsening of sx
3 Sx of oral decongestants
- Tachy
- Trenors
- Insomnia
Leukotriene inhibitors: use?
- indicated for both allergic rhinitis and maintenance tx for persistent asthma
- especially useful in pts with both asthma and allergies or in pts whose asthma is triggered by allergies
Desensitization tx
- used in pts who remain symptomatic despite mac medical tx
- steps:
1. Test to figure out specific antigens
2. Inject pt with highly diluted antigen
3. Inject weekly or bi-weekly while gradually increasing the concentration of the antigen
Tx of anaphylaxis
- injection of aqueous epi 1:1,000 in a dose of 0.2 to 0.5 mL (0.2-0.5 mg) –> given subcutaneously or IM ASAP, can be repeated in 10-15min if needed
- Fluid replacement –> lots of fluid moves into interstitial space
- Antihistamines –> if severe
- Steroids –> if severe
- Bronchodilators –> if severe
* *should be observed in hospital for 12-24 hrs bc sx can reoccur!!
Status asthmaticus
-an airway obstruction that lasts for days or weeks and is refractory to tx
4 Most common causes of conjunctivitis?
- bacterial
- viral
- allergy
- chemical irritants
What are the most common bacterial causes of conjunctivitis?
- Staph
- Strep
- H. Influenzae
- Morexella
- Pseudo
Bacterial Conjunctivitis: tx
- can be self-limiting in 10-14 days
- give a sulfonamide instilled locally 3x daily to clear the infection in 2-3 days
What is the most common cause of epidemic keratoconjunctivitis? Tx?
- adenovirus
- highly contagious
- tx:
1. sulfonamide tx to prevent secondary infections
2. Hot compress to reduce discomfort
3. Weak topical steroids to tx corneal infiltrates - usually lasts 2 wks
Noninfectious causes of conjunctivitis: tx
-oral antihistamines or topical antihistamines or anti-inflammatory eye drops
What can be the cause of diarrhea if the stool was found to have leukocytes present in it?
- Salmonella
- Shigella
- Yersinia
- E. colic
- C. Diff
- Campylobacter
- Entamoeba histolytica
Nephritic
-hematuria
Nephrotic
-proteinuria
Acute diarrhea
-present for less than 2 wks
Chronic diarrhea
-present for more than 4 wks
Subacute diarrhea
-present for 2-4 wks
Diarrhea in travler’s to Mexico
-caused by enterotoxigenic E. coli
Common cause of diarrhea in campers
-giardia
Diarrhea from undercooked chicken
-salmonella or shigella
Diarrhea from undercooked hamburger
-enterohemorrhagic E. coli
Diarrhea from mayo
- Staph aureus
2. Salmonella
Diarrhea from raw seafood
- Vibrio
- Salmonella
- Hep A
Causes of illness after eating a mayo containing salad w/in 6 hrs, 8-12 hrs, or w/in 12-14 hrs
- < 6 hrs = s. aureus
- 8-12 hrs = c. Perfringens
- 12-14 hrs = e. coli
3 causes of diarrhea in daycare settings?
- Shigella
- Giardia
- Rotavirus
Dx of diarrhea?
- most patients dont need work up bc disease is self limiting
- exceptions:
1. Fever > 100.4 *F
2. Bloody diarrhea
3. Severe abdominal pain
4. Profuse diarrhea
5. Dehydration
6. > 48 hrs
7. Kids, elderly, Immunoincomp pts
Ssx of traveler’s diarrhea
- > 3 loose stools in 24 hrs
- Abdominal cramping
- Nausea
- Vomiting
- Fever
- Tenesmus
* *usually occurs within first 2 wks of travel
Which antibiotics can cause c. diff?
- classically associated w/ clindamycin, but ANY antibiotic can cause pseudomembranous colitis
- most common:
1. Clinda
2. Cephalosporins
3. Penicillins
What is the most common cause of diarrhea? Tx?
- viral
- tx: rehydration, antibiotics WONT help!
OTC tx of acute diarrhea
- will help slow down the frequency of the stool
- can make certain infections worse bc they prevent your body from getting rid of the organism that is causing the diarrhea
Antibiotic prophylaxis for traveler’s diarrhea
- not indicated unless the pt is at incased risk for complications from diarrhea or dehydration (ex inflammatory bowel dz, renal dz, or immunocomp)
- fluoroquinolones are used
Antibiotics for tx of acute diarrhea
- can help with bacterial diarrhea
- quinolones are usually used (ciprofloxacin) for 1 or 2 days
- -cannot be used in children or pregnant women
- azithromycin as a single dose in adults and for 3 days in children
- -can be used in prego moms
- rifaximin can be used in diarrhea caused by noninvasive strains of e. coli (wont work for fever or blood in stool)
Tx for diarrhea caused by c. diff?
- Metronidazole
2. Vancomycin
When should you begin screening women for lipid disorders?
-age 45
Risk factors for breast cancer
- Having first child after age 30
- Family hx of breast cancer
- Personal hx of breast cancer or atypical hyperplasia found on previous breast bx
- Known carrier of BRCA-1 or BRCA-2
Recommendations for mammographies for general population?
-start at age 40 (or some sources say 50) and screen every 1-2 yrs
Risk factors for cervical cancer (4)?
- Early onset of sexual intercourse
- Multiple sex partners
- HPV infections
- Tobacco use
In what 2 groups of women apis cervical cancer seen in?
- Women not screened in over 5 yrs
2. Women who had an abnormal pap and did not follow-up on it
How many postmenopausal women will have an osteoporosis related fracture in their lifetime?
-HALF!!