Review Flashcards
Sensitivity definition
the ability of a test to detect a person who has the disease
Specificity definition
the ability of a test to detect a person who is healthy (or to detect the person without the disease).
Finkelstein’s test
positive in De Quervain’s tenosynovitis.
Anterior drawer maneuver and Lachman maneuver
positive if anterior cruciate ligament (ACL) of the knee is damaged
McMurray’s sign
positive in meniscus injuries of the knee.
A rare but serious adverse effect of angiotensin-converting enzyme inhibitors (ACEIs)
Angioedema
Preferred drugs to treat hypertension in diabetics and patients with renal disease because of their renal-protective properties.
ACEIs or angiotensin receptor blockers (ARBs)
Penicillins
Amoxicillin (broad-spectrum penicillin), penicillin VK
Macrolides
Erythromycin, azithromycin (Z-Pack), or clarithromycin (Biaxin)
Cephalosporins
First-generation: cephalexin (Keflex)
Second-generation: cefaclor (Ceclor), cefuroxime (Ceftin), cefprozil (Cefzil)
Third-generation: ceftriaxone (Rocephin), cefixime (Suprax), cefdinir (Omnicef)
Quinolones
Ciprofloxacin (Cipro), ofloxacin (Floxin)
Quinolones with gram-positive coverage
Levofloxacin (Levaquin), moxifloxacin (Avelox), gatifloxacin (Tequin)
Sulfas
Trimethoprim–sulfamethoxazole (Bactrim, Septra), nitrofurantoin (Macrobid)
Tetracyclines
Tetracycline, doxycycline, minocycline (Minocin)
Nonsteroidal anti-inflammatory drugs (NSAIDs)
Ibuprofen, naproxen (Aleve, Anaprox)
COX-2 inhibitor
Celecoxib (Celebrex)
Category B drugs for pain relief
Acetaminophen (Tylenol) instead of NSAIDs such as ibuprofen (Advil) or naproxen (Aleve, Anaprox).
Preferred treatment for cutaneous anthrax and contagion
Ciprofloxacin 500 mg orally twice a day for 60 days or 8 weeks.
If allergic to ciprofloxacin, use doxycycline 100 mg twice a day.
Cutaneous anthrax is not contagious; it comes from touching fur or animal skins that are contaminated with anthrax spores
Vitamins for breast-fed babies
Breastfed infants should be started on vitamin D during the first few days of life; then at age 4 months, iron-supplementation is recommended
*formula contains vitamins/minerals so no need to supplement
6 months developmental milestones
At the age of 6 months, infants can sit without support; roll over front to back, then from back to front; transfer objects from one hand to the other; use a raking grasp; and babble.
Levels of evidence rankings [ highest/best level of evidence (#1 ranking) ]
- Meta-analysis and/or systematic reviews (Cochrane/MEDLINE/CINAHL/PubMed)
- Randomized controlled trials (RCTs): used for testing medical treatment effectiveness, subjects assigned at random to either a control or treatment group.
- Experimental studies (control group, intervention group, randomization)
- Cohort/case control studies
- Retrospective chart reviews
- Expert/specialty society opinions
Nodular melanoma findings
Usually has pigment such as brown or black color with irregular borders.
Impetigo findings and pathogen
Initially appears as papules that develop into bullae. These rupture easily, becoming superficial, bright-red “weeping” rashes with honey-colored exudate that becomes crusted as it dries. The rashes are very pruritic and are located on areas that are easily traumatized, such as the face, arms, or legs.
Bacterial skin infection caused by group A Streptococcus and Staphylococcus aureus.
Type of cellulitis caused by strep. It resembles a bright-red, warm, raised rash (plaque-like) with discrete borders usually located on the face or the shins. Blistering is not present.
Erysipelas
Legionella pneumonia (Legionnaire’s disease) findings
History of exposure to “nebulized” water sources (e.g., air conditioners, fountains). Presents with pneumonia signs/symptoms that are accompanied by gastrointestinal (GI) symptoms (diarrhea, nausea/vomiting).
Hemoglobin levels (Males vs Females)
Males: 13.0–17.5 g/dL
Females: 12.0–16 g/dL
Hematocrit levels (Males vs Females)
Males: 40%–50%
Females: 36%–45%
MCV (mean corpuscular volume)
80–100 fL
RDW (red cell distribution width)
> 14.5%
The RDW is a measure of the variability in size of red blood cells (RBCs; or anisocytosis).
Platelet count
150,000 to 450,000 platelets per microliter of blood
<150,000/mm3 (increased risk of bleeding, disseminated intravascular coagulation)
Reticulocytes
0.5%–1.5% of red cells (↑ acute bleeding),
starting treatment for vitamin deficiencies (iron, B12, folate), acute hemolytic episodes
Total WBC (white blood cell) count
4,500–11,000/mm3 (↑ bacterial infections)
Neutrophils (or segs)
55%–70% (↑ bacterial infections)
Band forms (immature WBCs)
> 5% (↑ severe bacterial infections)
Also called “shift to the left”
Eosinophils
> 3% (↑ allergies, parasitic diseases, cancer)
TSH (thyroid-stimulating hormone)
> 5.0 mU/L = hypothyroidism
<0.4 mU/L = hyperthyroidism
PSA (prostate-specific antigen)
<4.0 ng/mL (↑benign prostatic hyperplasia [BPH], prostate cancer)
Ferritin
<15 mcg/L = iron-deficiency anemia
ESR (erythrocyte sedimentation rat); sed rate
Men 0–22 mm/hr
Women 0–29 mm/hr
Elevated = giant cell arteritis, rheumatoid arthritis [RA], lupus, inflammation
CRP (c-reactive protein)
Elevated = inflammation, autoimmune diseases, a risk factor for heart disease
cTnT (cardiac troponins)
Elevated in myocardial infarction, heart damage, heart failure
Sensitive test for myocardial cell damage (myocardial infarction, unstable angina)
BNP (B-type natriuretic peptide)
Elevated in heart failure
Potassium
3.5 - 5.5 mEq/L
Critical values <2.5 or >8 mEq/L
Microcytic anemia
Low MCV
Differential diagnosis for microcytic anemia is iron deficiency and alpha or beta thalassemia trait or minor
Iron-deficiency anemia
Serum ferritin and serum iron levels: Decreased
TIBC and RDW: Elevated
*most common anemia in the world for all ages/races/gender
The gold-standard test to diagnose any anemia involving abnormal hemoglobin (e.g., thalassemia, sickle cell)
Hemoglobin electrophoresis
Clue cell findings
Mature squamous epithelial cells in the vagina with numerous bacteria on the cell surface and borders
positive for bacterial vaginosis