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PE - RFs
- Misc: 60+, CA, prior DVT/PE,
- Hereditary: hypercoag states (factor V Leiden, prot C&S defic, ~thromb III defic)
- Cond: Card dz (CHF), obese, nephrotic syndr
- Major: surg, trauma
- Estrogen: preg, OCC
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PE - S/Sx
dysp, tachyp, pleuritic CP, rales, cough, DVT s/sx, tachyc, S4, /P2, shock, LG F, BS, dull on percuss
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PE - Dx
- US: venous duplex of LE (+) hep, (-)?
- V/Q: nl r/o PE, hi-prob hep, /clin suspicion - PA
- CT: helical chest - good s/s
- Pulm angio: gold std - invasive
- D-dimer: nl & clin susp low - likely not PE (also / MI, CHF, PNA, post-op
- Modified Wells criteria: .
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Modified Wells criteria
- PE likelihood
- 3: clin s/sx DVT; alt dx less likely
- 1.5: HR>100, immob/surg<4wk, prior DVT/PE
- 1: hemop, CA last 6mo
- Clinical probability
- Low: <2 (<=10%)
- Med: 2-6(<=30%)
- High: >6(>=705)
- 4: D-dimer assay, if abnl do spiral CT
- 5+: Spiral CT scan
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PE - Tx
- O2: correct hypoxia
- A ~coag tx: UFH/LMWH -> PTT 1.5-2.5x 80ug/kg bolus, 18ug/kg/hr for 5-10 days
- Warfarin: LT tx, start day1->INR 2-3 for 3-6mo
- Throbolytic tx: tPA - massive PE, unstable, R HF
- IVC: CI to ~throm, fail, low pulm reserve
- Embolectomy: surg/cath - CI tPA/fail
- Prophyl: hep 5000uSC every 8-12hr; enoxaparin 30mgSC BID or 40mg SC daily. SCD
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CAP - typical vs atypical agents
- Typical: S. pneumo, H. flu, aerobic Gram- rods (klebsiella [EtOH], enterobacteriacae), Staph aureus
- Atypical: M. pneumo, chlamydia, coxiella burnetii, legionella, viruses (flu, adenovius, parainfluenza, RSV)
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CAP - typical vs atypical s/sx
- Typical:Atypical
- Acute:Insideous
- Prod cough:dry cough
- Purulent sputum:no sputum
- F w/shaking chills:F w/no chill
- Tachypnea/tachycardia:pulse/temp dissociation
- late insp crackles, bronch BS, ^fremitus, dullness on percuss
- wheeze,ronchi,crackles
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CAP - typical vs atypical CXR results
- Typical: lobar consolidat'n; multi-lobar=serious
- Atypical: diff reticulonod'r infiltr's; ~consolidat'n
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CAP - dx
- CXR (PA/Lat), Chgs lag 6 wks
- Pre-tx sputum Gram stain/cx
- Urinary antigen assay (legionella, S. pneumo)
- Blood cx
- CBC
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CAP vs H(C)AP
- CAP: in community or 1st 72 hrs hosp
- H(C)AP: after 72 hrs hospitalization
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HAP - MC bacterial pathogens
- G(-) rods (E. coli, Psuedomonas)
- Staph aureus
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HAP - tx
- G- rods
- Cephalosporins w/pseudomonal coverage:
- - Ceftazidime, cefepime
- - Carbapenems (imipedem)
- - Piperacillin/tazobactam (Zosyn)
- NOT macrolides (azith, clarith, eryth)
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PNA CXR silhouette sign
- Right <3 border - RML
- Left <3 border - lingula
- R hemidiaphr - RLL
- L hemidiaphr - LLL
- Descending aorta - LUL
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COPD - classic types
- C bronchitis: clin dx - c cough+sputum x3mo/yr for 2 yrs. /mucus->inflam&scar, /glands, sm muscle hyperplasia
- Emphysema: pat dx - alveoli destruct; <-smoke
- Coexist; /obstruction
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COPD - RFs
Smoke, α-antitrypsin defic, 2nd-hand smoke, POC, c asthma
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COPD - S/Sx
- Any combo: cough, sputum, /dyspnea
- DOE: limit activity
- /FET: prolonged forced expiratory time >=6sec
- Auscult: end-forced-expir wheezes, breath sounds, inspiratory crackles
- Misc: tachyp, tachyc, cyanosis, accessory, hyperresonance, signs cor pulmonale
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Pink puffers
- Emphysema > C Bronchitis
- Thin, lean fwd, barrel chest, tachyp w/pursed lips, distressed, uses accessory musc (straps)
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Blue bloaters
- C Bronchitis > Emphysema
- Overweight, cyanotic, c cough w/sputum, signs of cor pulmonale, RR nl-slight/, NAD
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COPD - Dx
- PFT (spirometry) - definitive test
- FEV1: 70% mild, 70-50 mod, 50- severe
- FEV1/FVC: < 0.70 obstruction
- /TLC, RV, FRV: .
- peak exp flow rate: <350L/min do PFT
- FEF50%: 0.5 = obstruction
- CXR: HInflat'n, flat diaph, /retrosternal space, vasc markings, r/o PNA/pnuemothorax
- α-antitrypsin lvl: fam hx <= 50
- ABG: c pCO2 retention, O2 -> c resp acidosis + metabolic acidosis to compensate
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COPD - TX
- X smoke: sx improve by 1 year
- O2 tx: lowers mortality (18 hr/day P-HTN) - PaO2 55, O2sat<88, PaO2 55-59 = polycythemia or cor pulmonale
- i B2-agon: (lev)albuterol - bronchodilators. Long-acting salmeterol, formoterol
- i ~cholinergic: ipratropium bromide, tiotropium (slower than B2 but last longer); combo
- i corticosteroids: budesonide, fluticsone, ~inflam - minimal FEV1 decrease
- Misc: pulm rehab, vaccinations, abx, surg
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COPD - Tx guidelines
- Mild-mod: bronchodilator MDI, LD i glucocorticoids, ?theophylline
- Severe: Meds + continuous O2 tx, pulm rehab, triple inhaler tx.
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Acute COPD exacerbation
- s/sx: persistent /dysp not relieved by dilators, /sputum, cough
- complic: acute resp failure
- organisms: S. pneumo, H flu, M. catarrhalis, V
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Acute COPD exacerbation - Tx
- Bronchodil: (B-agonist) alone w/anticholinergics
- Syst corticosteroids: hosp IV methylprednisone, taper w/ oral prednisone (NOT inhaled!)
- Abx: azith, levo, TMP/SMX, amox, doxy
- O2: >90%
- NPPV: non-invasive +-pressure vent BIPP CPAP
- Hosp: or not?
- CXR: .
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COPD complications
- acute exacerbations: infect, non-comply, HD
- 2ndary polycythemia: HCT>55M/47F
- Pulm HTN & cor pulmonale: severe, long-standing
- RV hypertrophy: <- c bronchitis
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Sarcoidosis - etiology
- Def: c systemic granulomatous dz char by noncaseating granulomas, mult organ sys incl lungs
- Occur: >AA, W, 75%<40yo, 50% incidental CXR
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Sarcoidosis - S/Sx if severe
- Dyspnea
- CP
- HCa
- Ocular
- CNS
- Cardiac involvement
- Progressive pulmonary dz
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Sarcoidosis - Dx
- CXR: B hilar adenop, 50%
- /ACE: 50-80%
- HCaUria/emia: common
- LFT: abnlities
- Bx: transbronchial - definitive; see noncase gran
- PFT: lung vol (VC, TLC), DLco, FEV1/FVC
- Galium scan: panda sign
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Sarcoidosis staging
- I: B hilar adenopathy w/out parench infiltrates
- II: hilar adenopathy with parenchymal infiltrates
- III: diffuse parench infiltrates w/o hilar adenop
- IV: pulmonary fibrosis w/ honeycombing and fibrocystic parencymal changes
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Sarcoidosis - Tx
- Most resolve in 2 yrs
- Systemic corticosteroids x 6 wks, 2-3mo taper
- Methotrexate if refractory to corticosteroids
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