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65 Cards in this Set

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These patients are at high risk for vent failure
VC>20ml/kg; NIF <30 cm H20; declining values
best method to predict in-flight hypoxemia in COPD patients
HAST or hypoxia altitude simulation test (patient breathes a hypoxic gas x 20mins)
how to interpret the HAST?
PaO2 <50, give in-flight O2; PaO2 >55, no supplemental O2; 50-55 borderling; measure HAST during activity
mechanism of AAT disease
AAT is antiproteolytic enzyme; it neutralizes neutrophil elastase, deficiency results in excessive amounts of neutrophil elastase --> destruction of elastin --> early COPD (panacinar emphysema with basilar predominance)
diagnostic test for CF; hallmarks of CF?
sweat chloride testing; bronchiectasis, purulent sputum
Initial treatment of anaphylaxis
IM or SQ epinephrine + inhaled albuterol
young woman with dyspnea; CXR shows hyperinflation; comes with spontaneous pneumothorax and/or chylothorax, what diagnosis to consider?
lymphangioleiomyomatosis
Pathophysiology of LAM or lymphangioleiomyomatosis
smooth muscle cells that infiltrate the lung with inactivating tuberous sclerosis complex gene mutations resulting in constitutive activation of the mammalian target of rapamycin (mTOR) signaling pathway.
characteristic high res CT abnormalities seen in RB-ILD (respiratory bronchiolitis–associated ILD)
centrilobular nodules with air-trapping and scattered ground-glass attenuation
Lesions located in the anterior mediastinum
thyroid tumors, thymic tumors, and lymphomas
tumors in the middle mediastinum
bronchogenic cysts, pericardial cysts, LAD
when is pulmonary rehabilitation indicated?
symptomatic patients with FEV1 < 50%
Most patients require a tissue diagnosis, but there are some exceptions that do not warrant histologic confirmation such as
Löfgren syndrome (fever, erythema nodosum, polyarthralgia, and hilar lymphadenopathy) and Heerfordt syndrome (uveitis, parotid gland enlargement, and fever)
PDE-4 inhibitor indicated for chronic treatment of severe and very severe COPD with recurrent exacerbations. (not used for acute exacerbations)
Roflumilast
The newest National Asthma Education and Prevention Program guidelines - which asthma patients need ICU admission?
symptomatic, even with mild CO2 retention (PCO2 >= 42) or severely decreased PFTs despite bronchodilator (FEV1 or PEF <40%)
primary indication for thrombolysis in PE
persistent hypotension and hemodynamic instability
confirmatory diagnosis of cystic fibrosis
measurement of sweat chloride (>60mEq/L)
flow-volume loop in cystic fibrosis
flattening of inspiratory and expiratory limbs (fixed airway obstruction)
The only intervention shown to improve survival in selected patients with IPF
lung transplantation
Indications for LTOT
PaO2 </= 55 mm Hg (7.3 kPa) or O2 sats <= 88% on RA
What is the Nocturnal Oxygen Therapy Trial (NOTT)?
continuous O2 better than nocturnal O2 in enhancing survival
Delirium types
hyperactive, hypoactive, and mixed
key feature of AMS
headache, along with fatigue, nausea, and sleep disturbance (usually due to high-altitude periodic breathing [HAPB], an altitude-associated respiratory change
most effective therapy to prevent AMS and HAPB when gradual ascnet is not possible
acetazolamide 24-48 hours before ascent
when to start treatment with omalizumab in asthma exacerbatoins?
severe asthma + allergies, elevated IgE + symptomatic despite high-dose inhaled CS and LABA
young, never smoker, with endobronchial obstruction, recurrent pneumonia, smoothly bordered mass; what is the most likely tumor?
A carcinoid tumor
Contraindications to noninvasive ventilation
resp arrest, CV instability (hypotension, arrhytmias, MI), AMS, high aspiration risk, copious secretions; recent face/GI surgery; craniofacial trauma, fixed nasopharyngeal abnormalities, burns, extreme obesity
how to interpret allergy skin test in ABPA
if negative, high NPV; if positive indicates sensitization but not necessarily ABPA, check IgE levels, if >1000 IU/ml, suggests ABPA; if <500, prob not ABPA
When should LVRS be considered?
severe COPD, maximal med therapy, completed pulmo rehab + criteria: bilateral emphysema on CT; postbronch TLC >150% and RV >100%; FEV1 max <45%; PaCO2 <60 and PaO2 at least 45 on RA
treatment for stable but symptomatic COPD and FEV1 <60%
inhaled bronchodilator
NOTE: Methylprednisolone and epinephrine are useful in upper airway obstruction from croup and anaphylaxis,
but they do not have a clear role in the treatment of angioedema associated with ACE inhibitors.
condition characterized by cyclic central apneas and hyperpneas during sleep upon ascension to high altitude
HAPB or high-altitude periodic breathing (HAPB)
best guess for a diagnosis in a former smoker with mediastinal mass and ]probable myasthenic syndrome (Lambert-Eaton syndrome)
small cell lung cancer
Lambert-Eaton myasthenic syndrome is a rare neuromuscular junction transmission disorder caused by antibodies directed against
presynaptic voltage-gated P/Q-type calcium channels
when to start vasoactive agents in hypotension
fluid challenge 1L and MAP still <65 or CVP <8-12
The mean arterial pressure is calculated with the following equation
(2*DBP + SBP) / 3
diagnostic criteria for sepsis
known or suspected infection + 2 of SIRS criteria: T>38 <36; WBC >12 or <4; RR>20; HR>90
septic patient; central venous O2Sat <70% after fluid challenge, next step?
transfusion
normal DLCO
>/=80% predicted
indications for chest tube placement
effusions >1/2 hemithorax; loculation; (+) GS/CS; PF glu <60; PF pH <7.2
how is asbestosis diagnosed?
pulmo fibrosis + exposure history + appropriate latency period (10-15 years)
goal plateau pressure
<30 cm H20
in victims of smoke inhalation, which test is sensitive to determine cyanide poisoning?
lactate >90
antidote for inhaled cyanide toxicity
sodium thiosulfate
NOTe: ARDS + normal BP and normal crea -- when treated with aggressive diuresis
spent less time on the venilator compared to usual care.
NOTE: Early use of cisatracurium (to paralyze patients) in severe lung injury
improves mortality and shortens ventilation
recommendations for PEEP
no absolute number, look for PEEP # that achieves FiO2 <0.6 and doesn't cause hypotension
target BP for hypertensive emergency
no more than 25% in the first hour; then down to 160/100-110 in next 2-6h
envelope shaped crystals in urine
calcium oxalate, ethylene glycol ingestion
how to identify benign or malignant nodules in the Xray
borders: smooth benign, spiculated malignant; calcification pattern: popcorn, lamellar, central, diffuse are all benign
when to start oxygen therapy in COPD?
PaO2 <55 or O2sats >/= 88% +/- hypercapnea; or PaO2 56-59 or O2 sats <89% + one of the ffg: pulmo HTN, cor pulmonale or edema, Hct >56
when is alteplase indicated in PE?
persistent hypotension (SBP <90 or drop in SBP >40)
changes in the 2012 Berlin consensus definition for ARDS
Echo or PAWP not necessary; Acuity defined as 1 week; CT chest can be used; classify into mild mod severe based on hypoxemia and ALI term no longer used
index for assessing severity of COPD; what socre to refer for evaluation for lung transplantation?
BODE index (BMI, Obstruction, Dyspnea, Exercise) ; score >5 indicates referral for possible lung transplantation
when is lung transplantation indicated?
BODE index 7-10 + one of the ffg: hospitalization for hypercapnea / exacerbation; Pulmo HTN, cor pul despite O2 therapy; FEV1 <20% predicted; homogenous emphysema
radiographic description most consistent with BOOP
bilateral, diffuse, alveolar opacities in the presence of normal lung volume
consistent with a transudative process
serum:PF alb gradient >1.2 or serum:PF total Pr >3.1
Ideal body weight formula
50 Kg + (2.3Kg for every inch >60) in MEN; 45.5 Kg + (2.3Kg for every inch >60) in WOMEN
most common diagnoses for patients with chronic cough and normal CXR
BA, PND, GERD
ACCP guidelines for pulmonary nodules follow-up
repeat CT in 1 year if (former and current) smoker and <4mm nodule; if unchanged, no further CT
what is a benign / stable nodule
solid nodule on CXR or CT, stable x 2 years
what is the apnea-hypopnea index (AHI)?
apnea + hypopnea per hour of sleep
how to interpret AIH? An AHI of 5 to 15
5-15, 16-30, > 30 corresponds to mild, moderate and severe OSA
idiopathic form of BOOP
COP
form of bronchiolitis that occurs in most smokers
Respiratory bronchiolitis–associated interstitial lung disease (RB-ILD)