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Pulmonary: Pleural Diseases and Pulmonary Circulation
Intro to Clinical Medicine: Module 4
139
Medical
Graduate
06/25/2009

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Term
What is the most common cause of transudate pleural effusion?
Definition
transudates: increased production due to increased hydrostatic or decreased oncotic pressures
Term
What type of plueral efusion is due to increased production due to increased hydrostatic or decreased oncotic pressures?
Definition
transudates
Term
What type of pleural effusion is due to increased production due to abnormal capilary permeability?
Definition
exudates
Term
What is the most common transudates due to pleural effusion?
Definition
chf
Term
Besides lung ca which is 2nd most common, what is the most common cause of exudative pleural effusion?
Definition
pneumonia
Term
What type of pleural effusion is due to decreased lymphatic clearance?
Definition
exudates
Term
What type of pleural effusion is due to infection in the pleural space?
Definition
emypema
Term
What type of pleural effusion is due to bleeding into pleural space?
Definition
hemothorax?
Term
What are 5 types of pleural effusion?
Definition
transudates. exudates due to capillary permeability. exudates due to lymphatic clearance. empyema. hemothorax.
Term
What is an abnormal collection of fluid in the pleural space?
Definition
pleural effusion
Term
What type of pressure is involved in the pulmonary system?
Definition
low pressure system
Term
Pt presents w/dyspnea, cough, respirophasic chest pain. pe reveals dullness to percussion, decreased breath sounds, egophony, and trachial shift. What is on top of your d/dx?
Definition
pleural effusion
Term
How do small pleural effusions normally present?
Definition
normally asymptomatic
Term
What are 3 s/s of pleural effusion?
Definition
dyspnea, cough, respirophasic chest pain
Term
What might a pe of a small pleural effusion reveal?
Definition
no characteristics on exam
Term
What might a pe of a larger pleural effusion reveal?
Definition
dullness to percussion, decreased or absent breath sounds, bronchial breath sounds (compressive atelectasis), egophony (just above the fluid), and massive effusion w/pressure may have trachial shift
Term
How might an exudative pleural fluid analysis appear? How might pleural fluid appear in transudates?
Definition
appearance (bloody, clear, turbid, serous, purulent). wbc and rbc counts. glucose. transudates have none of these characteristics and suggest that absense of local pleural disease.
Term
On cxr, which is more dense: fluid or lung tissue?
Definition
fluid is more dense
Term
How many cc's do you need to visualize fluid on std upright cxr?
Definition
75-100 cc's
Term
What are 3 methods to image pleural effusion?
Definition
cxr, ct, mri
Term
How are transudate pleural effusions tx?
Definition
tx underlying cause. in some cases, therapeutic thoracentesis is needed
Term
What is the most common diagnostic imaging technique used to view pleural effusion?
Definition
cxr
Term
What is the most common cause of exudative pleural effusion?
Definition
pneumonia, lung ca-(40-80%)
Term
What is msed by the pleural effusion index?
Definition
the amt of fluid in pleural effusion. pei=a/b*100
Term
Are most malignant effusions transudative or exudative?
Definition
90% are exudative
Term
What might be needed to tx exudative pleural effusion?
Definition
systemic tx
Term
What might be used to prevent further pleural effusions?
Definition
pleurodesis (used to be done w/talc now done w/sandpaper- rub it raw and then it sticks. also can be done w/chemicals)
Term
How do you tx hemothorax?
Definition
tx underlying reason: bleeding to site, trauma
Term
How should parapneumonic effusions be tx?
Definition
tx underlying infection (empyema- surgery)
Term
What are 2 ways pneumothorax can occur?
Definition
spnotaneous (primary or secondary) or traumatic
Term
What type of pneumothorax occurs where there is no underlying lung disease?
Definition
primary spontaneous
Term
What type of pneumothorax occurs as a result of a complication of preexisting lung disease?
Definition
secondary spontaneous
Term
What type of pneumothorax occurs from penetrating or blunt trauma?
Definition
traumatic
Term
What type of pneumothorax occurs from penetrating or blunt trauma?
Definition
traumatic
Term
Whaty type of pneumothorax is most likely to be caused from rupture of small blebs in a tall thin male age 10-30 (more specifically 18-25) with a hx of family hx and smoking?
Definition
pneumothorax: primary spontaneous
Term
What type of pneumothorax occurs in the setting of copd, cf, tb, pcp, interstitial lung disease (sarcoidosis)?
Definition
pneumothorax: secondary spontaneous
Term
How can pneumothorax present? (3 signs and 3 symptoms)
Definition
signs: respiratory distress, tachycardia, tachypnea. symptoms: chest pain (mild to severe), dyspnea, palpitations
Term
What is the test of choice for ptx?
Definition
cxr
Term
What diagonstic imaging technique might be needed to detect smaller ptx?
Definition
ct
Term
When are abg's needed in ptx?
Definition
usually not needed
Term
What is the severity of tension ptx?
Definition
tension ptx is a life treatening illness! requires immediate evacuation of air
Term
What is the most serious type of ptx?
Definition
tension
Term
Why might a young healthy individual w/ptx not seek medical tx?
Definition
can compensate
Term
On what does tx of ptx depend?
Definition
on severity, size, sympoms and underlying disease.
Term
What might be required in larger ptx?
Definition
require chest tube insertion and placed under water seal vacuum
Term
How prevalent is tx of ptx w/thoracostomy or open thoracotomy? When this tx is instituted, how effective is it long term?
Definition
small population may require this. 30% of spontaneous may have recurrence.
Term
What is defined as pulmonary htn w/elevated pulmonary vascular resistance?
Definition
primary pulmonary htn
Term
What is the etiology of pulmonary htn?
Definition
etiology unknown, thought to be genetic
Term
What is a water seal?
Definition
chest tube hooked to water seal, into chamber that has a bit of fluid sease, so air comes in and every time you take a deep breath in, you reinflate lung, which is then resealed by water. (just writing what thibideau said sorry if it doesn't make sense w/o a diagram)
Term
What is a diffuse narrowing of the vessels w/mild sx that can mimic other disease processes, occurs mostly in women- younger populations and presents many times w/right sided heart failure and progressively worsens?
Definition
pulmonary htn
Term
The following disorders of the lung or hypoxemia can contribute to what pathology: copd, interstitial lung disease, sleep apnea, high altitude (chronic exposure), alveolar-capillary dysplasia?
Definition
pulmonary htn
Term
The following chronic thromboembolic diseases can contribute to what pathology: thrombotic obstruction (clot), pulmonary emboli (tumor, foreign material)?
Definition
pulmonary htn
Term
The following disorders of pulmonary vasculature can contribute to what pathology: schistosomiasis, sarcoidosis, histiocytosis X?
Definition
pulmonary htn
Term
What are 3 classes of disorders that cause pulmonary htn?
Definition
1. disorders of lung or hypoxemia, chronic thromboembolic disease, and disorders of pulmonary vasculature
Term
How are most pulmonary htn cases tx?
Definition
most medically tx: anticoagulation, diuretics, supplemental o2, ca2+ channel blockers (may worsen rv), transplantation reserved (high mortality. 50% 2 yr survival)
Term
What pathology do the following tx: anticoagulation, diuretics, supplemental o2, ca2+ channel blockers (may worsen rv), transplantation reserved (high mortality. 50% 2 yr survival)?
Definition
pulmonary htn
Term
What involves right ventricular hypertrophy, failure from pulmonary disease, and depends on the underlying cause of disease?
Definition
cor pulmonale
Term
What is the most common cause of cor pulmonale?
Definition
copd
Term
Pt presents w/chronic productive cough, exertional dyspnea, wheezing respirations, fatigability, and weakness. What might this indicate?
Definition
cor pulmonale (sounds a lot like copd)
Term
What causes sx of cor pulmonale to increase?
Definition
increased rv failure
Term
To what are sx of cor pulmonale related?
Definition
underlying cause
Term
Pt presents w/ cyanosis, clubbing, distended neck veins, rv heave or gallop, hepatomegaly w/tenderness, and dependent edema. What illness might these signs indicate?
Definition
cor plumonale
Term
What pathology might be indicated by the following pathology: ekg: right axis deviation, peaked p waves, deep s waves, rv hypertrophy, supraventricular arrythmias are frequent?
Definition
cor pulmonale
Term
What tests might determine the underlying cause of cor pulmonale? What tests might be ordered to view rv funtion?
Definition
pft. echocardiogram
Term
At what is tx of cor pulmonale directed?
Definition
at underlying pulmonary cause
Term
How serious is pe? How many deaths each year are due to pe? How is it ranked in causing death in hopitalized pts.
Definition
very serious, life threatening illness- over 200,000 deaths in the us each year, third leading cause of death in hospitalized pts.
Term
The following etiologies cause what pathology: aire (from surgery or venous catheter), amniotic fluid, fat (from long bones), foreign bodies, renal cell tumor, septic emboli, parasite eggs, genetic- protein s, protein c, factor v leiden deficiency?
Definition
pe
Term
What is the most common embolus?
Definition
thrombus
Term
From where can pe come?
Definition
from anywhere in the venous vasculature
Term
How frequently is pe caused by thrombus in the leg?
Definition
rarely
Term
What can be caused by the following: pulmonary arterial htn. primary pulmonary htn. persistent pulmonary htn of newborn. secondary: connective tissue disease, eisenmenger's physoiology (congenital heart disease), portal htn, hiv, drugs/toxins (esp something hard to read), pulmonary venous htn. left sided heart disease. pulmonary venouse obstruction: veno-occlusive disease, and fibrosing mediastinitis (usually related to histo or xrt)?
Definition
pulmonary htn
Term
From where do 20% of pts get pe?
Definition
proximal popliteal or ileofemoral
Term
Over half pts w/pe will have what other pathology?
Definition
50-60% of pts w/pe will have dvt
Term
On what are s/s of pe dependent?
Definition
size of embolus
Term
What is the most common s/s of pe?
Definition
tachypnea: over 50% of pts
Term
The following are s/s of what pathology: seizures, syncope, abdominal pain, fever, productive cough, wheezing, decreasing level of consciousness, new onset of atrial fibrillation?
Definition
pe
Term
Most pts w/pe will have abnormality of what test?
Definition
ekg: 70% will have abnormality
Term
What is the most common abnormality on ekg in pts w/pe?
Definition
most common is sinus tachycardia and/or nonspecific st and t wave abnormalities
Term
How prevalent is the following abnormality in pts w/pe: p pulmonale, right axis deviation and right bundle branch block?
Definition
less than 5%
Term
What might abg's show in a pt w/pe?
Definition
acute respiratory alkalosis
Term
What might a profound hypoxia in the setting of normal cxr indicate?
Definition
pe
Term
Can echos can be used in pulmonary htn?
Definition
yes.
Term
What do positive or negative d-dimers indicate in a pt who presents w/s/s of pe?
Definition
d-dimer: degredation product of fibrin is elevated in the presence of pe. a negative d-dimer bolsters a negative pe. however, a positive one does not confirm it.
Term
What does westermark sign indicate?
Definition
pe- prominant central pulmonary artery
Term
What might a prominant central pulmonary arter indicate?
Definition
pe- westermark sign
Term
Would you order a cxr in a pt w/s/s of pe? Why or why not?
Definition
cxr needed to rule out other reasons for complaint. in cases of pe, most cxr's are normal. you may see: atelectasis, parenchymal infiltrates, pleural effusions.
Term
What might a hampton hump indicate?
Definition
pe. pleural base of incerased marking. respresents interparencymal hemorrhage.
Term
What are the various ways a lung scan (v/q scan) will be read in a pt w/pe?
Definition
negative. low probability. intermediate probability. high probability.
Term
What has rapidly become the initial test of choice for detecting pe? Why?
Definition
ct. very sensitive in the main pulmonary aa, less so in the subsegmental and segmental aa.
Term
What are 2 tests that are equal in dx pe? Each have advantages and disadvantages.
Definition
v/q vs. ct
Term
The following tests may be ordered to dx what pathology: venous thrombosis studies, venous us, impedence plethysmography, contrast venography, and pulmonary arteriography?
Definition
pe
Term
What dx tool for pe is readily available with good results in detecting proximal extremit thrombosis?
Definition
venous us
Term
What dx tool for pe ms impedence in flow over a v?
Definition
impedence plethysmography
Term
What dx tool for pe is still the gold std but not w/o several risks (invasive study)?
Definition
contrast venography
Term
*PANCE* What dx tool for pe still remains the reference std (gold std) test for detecting pulmonary embolism?
Definition
pulmonary arteriography
Term
What dx tool for pe includes intraluminal filling defect, abrupt cutoff of the arterial flow, and asymmmetry of flow?
Definition
pulmonary arteriography
Term
To what category do the following causes of pe belong: protein s, protein c, factor v leiden?
Definition
natural clotting factors
Term
What is the big reason why people get pe's?
Definition
increased immobility (bed rest-post operative, obesity, stroke) (this is a perfect set-up for a thrombus to occur and cause an embolus to develop) with prior episodes of thrombus and meds (ocp's hormone replacement tx)
Term
The following can cause what pathology: hyperviscosity (polycythemia) with orthopedic sx and disease (malignancy, sx)?
Definition
pe
Term
The following are risk factors for what disease: increased venous pressures (low cardiac output, pregnancy), trauma, and gene defects?
Definition
pe
Term
New onset of afib is a big risk factor for what pathology?
Definition
pe
Term
"people who come in w/a big pe come in with this overwhelming sense of doom, and usually they're right." no question, just a quote from thibideau's old prof
Definition
Term
The following are tx for what pathology: anticoagulation therapy, heparin, maintain a pTT of 1.5-2.5 times nml, adjust dose based on repeat of aPTT values?
Definition
pe
Term
How should aPTT be maintained in tx of pe?
Definition
1.5-2.5x above nml. adjust dose based on repeat aPTT intervals
Term
When tx pe, how should heparin be dosed?
Definition
loading dose: 80units/kg iv, then maintenance infusion of 18 units/kg/hr
Term
What type of heparin is used to tx pe? Why?
Definition
low molecular weight heparin: have less binding to cells- greater availability. longer plasma half life. more predictable w/dose response administered sq- can continue tx at home. few side effects low risk of bleeding.
Term
How is warfarin (coumadin) used to tx pe: po, iv, or im? How long does tx continue? Where is tx started? How long does it take to get to therapeutic state? On what does maintenance dose vary?
Definition
oral tx continued for at least 3 mos after event. started in hospital along w/heparin. takes up to 7 days to get to therapeutic state. initial dose stated from 2.5-10 mg daily. maintenance dose varies depending on response.
Term
What is the target inr with warfarin tx for pe? What inr is too high?
Definition
target inr=2.5 with range from 2-3. inr above 4 give increase risk of bleeding.
Term
On who can you do v/q?
Definition
good or poor kidney function, anyone, really. preferred over cat in pregnant women, preferred over mri for pts w/kidney failure.
Term
What tx of pe is a pregnancy category x?
Definition
warfarin. use lmwh instead
Term
What must be considered in risks involved with indeinite tx for pe?
Definition
consider pts age, hemorrhage, pt's desire to cont tx
Term
What is the duration of pe tx?
Definition
unknown- most will continue w/tx indefinitely to reduce the risk of recurrent thrombus formation (both pe and dvt)
Term
How should thrombolytic tx be administered to tx pe: what is the purpose of the tx? when must it be administered? what is the success relative to heparin and warfarin?
Definition
thrombolytic tx: streptokinase, urokinase, recombinant tissue plasminogen activator (rTPA alteplase). increase plasmin levels- lyse thrombus. must use in 1st 24 hrs to be effective. no change in success of hx of 1 week and 1 mo when compared to heparin and warfarin
Term
What are disadvantages of thrombolytic tx for pe? What are contraindications
Definition
sig increase in risk for intracranial hemorrhage when compared to heparin (2.1% v. 0.2%). absolute contraindications- stroke in past 2 mos, active internal bleeding. major contraindications: uncontrolled htn, surgery or trauma in last 6 weeks.
Term
When is thrombolytic tx absolutely contraindications?
Definition
stroke in past 2 mos, active internal bleeding
Term
How does tx for pe tx thrombi?
Definition
prevents it from getting bigger; doesn't get rid of clots already there
Term
When is an inferior vena cava filter indicated for pe? It is indicated for pts w/ what major contraindication and what risks?
Definition
high risk pts. major contraindication to anticoagulation. high risk of recurrent dvt or pe
Term
If you don't get coag level back to normal in first 24 hrs, how is risk increased?
Definition
5-fold
Term
With what pathology is warfaring contraindicated?
Definition
kidney failure
Term
What tx of pe isn't used much anymore, and is more of a last-ditch effort to tx pe?
Definition
thrombolytic tx. these try to lyse thrombus and in doing so these need to be used very quickly to be effective
Term
symptoms include: fever. sob. chills. chest pain. sore throat. malaise. body aches. rhinorrhea.
Definition
bronchitis
Term
dry cough, dyspnea, and constitutional symptoms for weeks to mos
Definition
bronchiolitis
Term
BQ: What is the most common cause of cor pulmonale?
Definition
copd
Term
BQ: what is the most common cause of pleural transudates?
Definition
>90% chf
Term
BQ: What are the 2 most common causes of exudative pleural effusions?
Definition
bacterial pneumonia, cancer
Term
BQ: What is the most common cause of massive pleural effusion causing opacification of an entire hemithorax?
Definition
most common=cancer. may also be seen in tb/others
Term
BQ: Which 2 ca's most commonly cause pleural effusion?
Definition
lung and breast
Term
BQ: are most malignant pleural effusions exudative or transudative
Definition
>90% exudative
Term
BQ: How/when do most pts w/malignant effusions present?
Definition
advanced disease and multiple symptoms. dyspnea occurs in over 1/2 pts w/malignant pleural effusion
Term
BQ: what is the most common pe?
Definition
thrombus
Term
BQ: what is virchow's triad
Definition
stasis, hypercoag, vessel wall injury
Term
BQ: what is the most common inherited cause of hypercoaguability in white populations?
Definition
resistance to activated prot c, aka factor v leiden
Term
BQ: what is the most common sign and symptom in pts at risk for pulmonary thromboembolism?
Definition
symptom: dyspnea 67-85% (pain on inspiration 65-75%). sign: tachypnea- only reliable sign in more than 1/2 pts
Term
BQ: what do abg's usually reveal in pts w/pe?
Definition
alkalosis due to hyperventilation
Term
BQ: what is the initial dx study in us for suspected pe? what is teh reference std for dx of pe? in most centers what is the test of choice to detect proximal dvt? what is the reference std for dx of dvt?
Definition
helical ct pulmonary angiography has essentially supplanted v/q scanning. a nml helical ct alone does not exclude pe in high-risk pts. pulmonary angiography remains ref std for dx pe. in most centers, venous us is the test of choice to detect proximal dvt. contrast venography.
Term
BQ: what is characteristic of pulmonary htn in severe emphysema?
Definition
peripheral pruning" of lg pulmonary aa
Term
BQ: what is the most common sign of wegener granulomatosis lung disease?
Definition
nodular pulmonary infiltrates
Term
BQ: what is the rule for immune response detection in wegener's?
Definition
marked peripheral eosinophilia
Term
BQ: what is the most common prognosis for pts w/wegener granulomatosis?
Definition
complete remissions can be achieved in over 90% of pts w/wegener granulmatosis
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