Common Conditions Flashcards
Diff for Chest Pain
Angina
MI
Pericarditis - sharp pain inc w/ inspiration, friction rub, effusion, global ST elevation
Aortic dissection - tearing to back, wide mediastinum
Pneumonia
Pneumothorax - pleuritic, hyperesonance, dec sounds
HF - JVD, displaced apical impulse, edema
PE - tachycardia, tahypnea, D dimmer, V/Q scan, CTA
GERD - inc w/ meals, better w/ PPIs, pH probe
Peptic Ulcer Disease - H pylori testing
Pancreatitis - epigastric, inc amylase and lipase, CT
Costochondritis - tender to palpation
Anxiety - tightness and SOB
Herpes Zoster - pain b/f rash, unilateral dermatome
4 Steps in MI Work Up and Tx
1- order ECG and CXR
2- Start meds - MONA + beta
Morphine - less catecholamines Oxygen 2-4L NC for 6 hrs Nitroglycerin - start sublingual q 5 min then IV (unless hypotension or on sildenafil) A - ASA (clopidogrel if allergy) Beta blocker
3- 2 IVs –> labs
CBC, BMP, PT/PT/INR, CK-MB and troponins q 6-10 hrs X 3, later lipids, LFTs, Mg, UA, homocysteine
4- If confirmed MI then add heparin, GPIIb/IIIa receptor blocker, ACE inhibit (prevent remodeling), Mg if low (prevent torsades), reduced fat and cholesterol diet, statin w/in few days, HTN control and exercise 30 min / day + wt mgt
NY Heart A Functional Classification
I - angina w/ strenuous activity
II - angina w/ above daily activity
III - angina w/ family activity
IV - angina at rest
What condition can mask MI on ECG?
LBBB
If LBBB and angina symptoms, get cardiac enzymes
When is obstructive spirometry considered reversible?
if FEV1 inc by 12% or 200 mL w/ bronchodilator (asthma)
COPD Maintenance Therapy by Severity
0 - normal spirometry but at risk - smoking cessation + flu and pneumonia vaccines
1- FEVI > 80% - short acting bronchodilator (albuterol or ipratropium)
2 - FEV1 50-80% - add long sting bronchodilator (salmeterol or triotropium) $$ expensive
3- FEV1 30-50% - add inhaled steroid to dec frequency of exacerbations (fluticasone)
4 - FEV1 < 30% - if sat is < 88% at rest then use O2 for 15 hrs per day to dec mortality
Tx of COPD Exacerbation
- ABC’s
- Combo of short acting bronchodilators (beta agonist and muscarinic)
- O2 target of 88-92% sat (face mask or intubation if needed)
- Systemic steroids - take longer to set in but dec duration of exacerbation (10-14 day course prednisone)
- Abx if purulent sputum
Common Organisms of COPD Exacerbation
Mild - cover pneumo, H flu, M catarhalis
Severe - also cover Klebsiella and Pseudomonas
Diff for Non-Infectious Cough
Asthma or COPD
Malignancy
Postnasal drip
GERD (give PPI and see if improves; worse supine)
Meds - ACE inhibitors ( 1 wk to 6 mo after starting, stop med and re-evaluate at 4 wks, if cough gone switch to ARB)
CHF
Bronchitis (dx, organisms, tx)
- Dx of exclusion
- Usually viral and self-limited (color of sputum does not indicate bacterial)
- Influenza, parainfluenza, adenovirus, rhinovirus, Chlamydia pneumonia, mycoplasma pneumonia
- 2 wks but cough may remain for 2 mo
- Suspect pneumonia if fever, tachycardia, tachypnea and dullness - chest X-ray (Higher suspicion if elderly or underlying COPD)
- Tx - bronchodilator, antitussive (dextromethorphan or codeine) f/u 2-3 wks, no abx
Signs that Rhinosinusitis may be Bacterial (+ what bacteria and abx)
- persists > 7 days in adults or > 10 days in kids
- purulent d/c
- maxillary tooth or facial pain
- worsened symptoms after initial improvement
Strep pneumo, H flu, M catarrhalis
If chronic more anaerobes - Bacteroides, Fusobacterium
Amox or TMP-sulfa
If fail use amox-clavulanic acid, fluroquinolones, macrolides or cephalosporins
Diff for Pharyngitis
GAS - abrupt onset sore throat, fever, petechiae in tonsil area, tender cervical lymphadenopathy, absence of cough, plus exudate
Mono - adenopathy and splenomegaly; atypical lymphocytes on smear
Epiglossitis - stridor, drooling, toxic appearance, lean forward on arms (tripod); may need to intubate
Peritonsillar abscess - swelling pushes tonsils midline, contralateral deviation of uvula; need surgical drainage
GAS Testing + Centor Criteria
1- Rapid antigen test - high specificity low sensitivity; if pos treat if neg do throat cx
2- Throat cx takes 24-48 hrs
Centor Criteria (1 pt ea) - absence of cough, cervical nodes, temp > 100.4, age 3-14, deduct 1 pt if > 45
0-1 no abx
2-3 do rapid antigen test or throat cx
4+ give abx right away
GAS Tx
10 dys PCN oral OR sngl IM dose
If allergy use cephalosporins or macrolides
External v Internal Ear Infection
External
- pain, inflammation, exudate, tympanic membrane not involved
- Staph, strep, skin flora
- If associated w/ swimming then likely Pseudomonas (irrigate, topical abx and steroid)
- If DM can get invasive external otitis w/ Pseudomonas (surgical debridement and 4-6 wks IV abx if cranial bones involved)
Internal
- (OM) infection of middle ear, obstruction thru edematous Eustachian tubes, dec hearing, vertigo, red tympanic membrane
- Must see dec membrane mobility or fluid behind membrane to diagnose
- Tx - amox only if severe, recurrent, prolonged; usually self-limited
- Strep pneumo, H flu, M catarhallis
Thyroid Storm
Thyroid Storm - sudden inc release of thyroid hormone –> fever, confusion, tachy, HTN, dysrhythmia, psych problems
EMERGENCY - give beta blockers, PTU and hydrocortisone in case of adrenal crisis
Hyperthyroid Tx Considerations
- Definitive tx is radioactive iodine ablation (not if preg, breast feeding, kids)
- PTU and methimazole can be used temporarily or if ablation is contraindicated (often used in adolescents b/c likely spontaneous remission)
- Methimazole - prevents organification, safe in 2nd and 3rd trimester, risk of agranulocytosis
- PTU - prevents organification AND peripheral conversion, used in 1st trimester; hepatotoxic and agranulocytosis
- Thyroidectomy - if compressing nearby structures, meds and ablation do not work, safe in pregnancy
**Need thyroid replacement after ablation or surgical removal
Hypothyroid Work Up
1- Check TSH (high if primary - low if secondary) and free thyroxine (low)
2- If think secondary (low TSH) then do TRH test - if respond w/ inc TSH then pituitary is okay, if no inc then suspect pituitary problem and do imaging
3- If primary and no nodule on PE then treat w/ hormone replacement
4- If nodule then cont w/ US, FNA, etc
Thyroid Replacement Considerations
- Start at low dose and gradual inc over 3-4 wks in adults > 50 or if CAD
- May need to inc dose in pregnancy by 30%
- If primary then can follow w/ TSH checks; should check TSH 4-6 wks after dose adjustment
TSH > 5 need more or pt not taking supplement
TSH < .35 then decrease dose
-W/ age thyroid binding dec w/ dec albumin so dec dose
Thyroid Nodule Work Up
1- TSH and free thyroxine
(Hyperfunctinoing are rarely malignant so treat w/ surgery or ablation)
2 - US (can tell cystic v solid)
3- If > 1 cm and normal or elevated TSH then do FNA (cytology)
- Cannot distinguish b/n follicular adenoma and adenocarcinoma on cells alone - need surgical biopsy
- Can tell papillary, medullary and anaplastic
4- If < 1 cm and no concerning H&P then repeat US in 6 mo
**If preg, can do FNA and resection in 2nd or 3rd trimester but no radio scan; usually just follow until postpartum because indolent course
Definition of Acute Diarrhea
< 2 wks
90% are viral gastroenteritis
Timing of Food Poisoning by Organism
6 hrs - staph
6-12 C perfringens
12-14 hrs E. coli
When should you cx stool for acute diarrhea?
Bloody
(Bloody stool = invasive - Yersinia, Shigella, Entamoeba)
Immuncompromised
> 3-7 days
Which organisms are associated w/ leuks in stool?
Salmonella, Shigella, Yersinia, enteroinvasive and enterohemorrhagic E coli, C diff, campylobacter, E histolytica
Associations b/n food and diarrhea
Chicken - Salmonella, Shigella
Beef - E. coli
Creamy food - staph or Shigella
Raw seafood - Hep A, Vibrio, Salmonella
Traveler’s Diarrhea (organisms and recs)
ETEC
- No ppx recommendations unless Chrons, renal disease or immune comp (then give fluroquinolones)
- Try bismuth unless pregnant, allergic to ASA or on methotrexate/doxy/probenacid
Work-Up for Microscopic Hematuria
1- Take hx to ID source - exercise, mensturation, recent urology procedure, certain meds
2- If ID source … stop source and repeat UA in 6 wks –> if neg for RBCs in 6 wks then no need to f/u
3- If symptoms of UTI then cx urine and treat w/ abx if pos –> repeat UA in 6 wks –> if neg then n need to f/u
4 - if do NOT ID source … move on to kidney labs (BMP - creatinine, BUN, GFR)
- If pos then consult renal
- If neg and / or risk of bladder cancer then do imaging; upper GU via CT (unless kidney disease or preg then MRI) and lower GU gets cystoscope (may defer if < 35 w/o risk factors)
5- if still no source and persists then follow for at least 3 yrs to monitor for underlying source
6 Types Melanoma
1- In Situ - still in epidermis; excise
2- Superficial Spreading - (most common) slow radial growth phase
3- Lentingo Maligna - (least common) often seen in elderly
4- Acral Lentiginous - nails, feet, palms, more common in blacks and Asians
5- Amelanotic - RARE (<5%) non-pigmented so present at later stage
6- Nodular - (2nd most common) most aggressive, often black mole
When do you give packed RBCs for anemia?
HgB < 7 or sooner if CAD
Vit B12 v Folic Acid Def
Vit B12 - inc methylmalonic acid, neuro symptoms, takes longer to develop
- IM replacement 7 days, then 1/ wk for 4 wks then 1/ mo for yrs
Folic acid - just inc homocysteine, no neuro, associated w/ alcoholics so do CAGE screen
- oral supplement until corrected
Pathophysiology of Allergic Rhinitis
- IgE response –> inflammation of mucus membranes in response to external proteins
- IgE pre-formed on mast cells then binds protein –> granulation
1- histamine, tryptase, chymase, kinase
2 - leukotrienes and prostaglandin D2
- Secretions, vasodilation, sensory nerve stimulation leading to itching and sneezing
- Seasonal, perennial (whole yr), occupational
PE Signs of Allergic Rhinitis
Allergic shiners - dark circles around eyes from vasodilation
Nasal crease -horizontal line from rubbing tip of nose w/ palm
Boggy, blue-gray turbinates and clear secretions
Conjunctiva
Dennie-Morgan lines
Cobblestoning of posterior pharynx from streaks lymphoid tissue
Tonsil hypertrophy
Lungs - wheezing, tachypnea, prolonged expiration (ASTHMA)
Meds for Allergic Rhinitis
AVOID ALLERGEN
-nasal corticosteroids are first line for longstanding allergy
-antihistamines - prefer 2nd generation because less sedation and anticholinergic effects
1st - diphenhydramine, chlorpheniramine, hydroxyzine
2nd - loratadine, desloratadine, fexofenadine, azelastine, cetirizine
- Decongestants - alpha 1 agonists to vasoconstrict (phenylephrine) - REBOUND
- Leukotriene inhibitors esp if concomitant asthma - montelukast, zileuton
- Oral steroids only for short amount of time
- Desensitization w/ progressive inc dose exposure as last resort if fail other meds
Anaphylaxis
- urticaria, angioedema, hypotension, dyspnea
- Give .2-.5 mg epi in 1:1000 solution as subQ or IM injection plus IV fluids (causes vasoconstriction, bronchodilation and ionotropy)
- Monitor for 24 hrs
Diff for Conjunctivitis
1- Infection - staph, strep, H flu, M catarrhalis, Pseudomonas (local sulfonamide 3X daily)
2- Epidemic keratoconjunctivitis (pink eye) - spread by fomites, adenovirus, pharyngitis, fever, malaise, auricular lymph nodes
- Usually lasts 2 wks
- Give decongestants, artificial tears, compresses, weak topical steroid
3- Allergies / Chemicals
- Itching, tears, red, photophobia, stringy d/c
- Avoid irritants + oral or topical antihistamine + anti-inflammatory eye drops
Intussusception
- Telescope of intestine w/in self
- Portions that become trapped –> edema, ischemia, necrosis and perforation
- Periods of pain, fever and billious vomiting then pain free intervals b/c slow process
- Sausage like mass in abdomen
- Currant jelly stools - blood and mucus from sloughing
- Tx - fluids if unstable, NG tube if obstruction, surgery consult if perforation, otherwise barium enema is diagnostic and therapeutic b/c inc hydrostatic pressure causes reversal of telescope (fluoroscopy until normal bowel)
- Observe 12-24 hrs after until BM prod
Hypertrophic Pyloric Stenosis
- Younger infant - 1 mo (males > females)
- Projectile non-bile vomiting then hungry immediately after
- Olive mass in RUQ; may see peristaltic waves b/f vomit; thick pyloric muscles on US
- Tx - surgical
Malrotation w/ Volvulus
- As embryo the SI mesentery is small so more mobile SI that can eventually twist –> twist around SMA so dec blood supply
- Most present in 1st mo but may be asymptomatic even into adulthood
- Billious vomiting and ab pain –> ischemia/necrosis –> fluid loss and sepsis
- Dx - if stable do X-ray (beak like duodenum obstruction or misplaced duodenum) if unstable right to surgery
Cholinergic v Anti-cholinergic Poisoning
- Cholinergic - nicotine or insecticides
- Nausea, vomiting, diarrhea, cramps, salivation, lacrimation, sweating, sz
- Anti-cholinergic - antihistamines or TCAs
- Dry skin, dry mucosa, urinary retention, decbowel sounds
ROME Diagnostic Criteria for IBS
- Recurrent ab pain or discomfort for 3 days a mo for 3 mo + 2 of the following …
- Improves w/ defecation
- Onset associated w/ change in stool frequency
- Onset associated w/ change in stool form
IBS Tx Based on Subtype
- Ab Pain Predom
- Antispasmodics - dicyclomine, hyoscyamine (first line)
- Low dose TCA (if more severe or persistent)
- SSRI esp if co-morbid dep or anxiety
- Rifaxamin - abx
- Probiotics and peppermint oil
- Constipation Predom
- More fiber
- Polyethylene glycol
- Lubiprostone - selective Cl channel activator to inc fluid secretion in gut (nausea and expensive)
- Linaclotide - cGMP stimulator to inc gut motility and secretion (also costly)
- Diarrhea Predom
- Loperamide
- Alosetron
- Rifamixin - abx
Factors that determine whether pneumonia can be treated inpatient or outpatient
- Age
- Comorbidities - cancer, liver, CHF, renal, DM
- Tachypnea/fever/hypotension/tachycardia
- Altered mental status
- Dec pH
- Dec Na
- Dec O2 sat
- Dec HCT
- Inc glucose
- Inc BUN
- Pleural effusion
Tx of CAP vs Hospital Pneumonia
Tx = 3 to 10 days of macrolide or doxy; if co-morbidities then fluroquinolone or macrolide + ceph
Tx = 2 to 3 wks; cover pseudo (pip-tazo, cefepime, carbapanem) + fluroquinolone +/- aminoglycoside + vanco if MRSA
Bronchiolitis
- Non-specific inflammation of small airways secondary to viral illness
- Esp in kids < 2 and in winter
- Viruses = RSV (50-80%), flu, parainfluenza, adenovirus, metapneumovirus
- Mycoplasma pneumo or chlam pneumo
- Presentation - 1 to 2 days nasal congestion –> 2 to 5 days of wheezing, crackles, inc work breathing, prolonged expiration
- Usually clinical diagnosis
- Self-limited - only hospitalize if severe or young age/premature
- Pulse ox = good indicator of severity (want it 94% or more)
- Tx - supp oxygen, fluid for dehydration, suction
- PPX - immunoglobulin and palivizumab in kids at risk due to lung disease, cong heart disease or prematurity