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52 Cards in this Set
- Front
- Back
4 things to look for in a Chest xray
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1. Air under the diaphragm
2. Look for cracked ribs 3.Look for the 4 bumps 4. Look at the costophrenic andgle should be 30 degrees |
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4 bumps on the left side of the chest xray
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1. Aorta(clavicle)
2. pulmonary artery 3. Left atrium 4. Left ventricle |
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Problem with the siluhoutte = problem with the lungs
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Ratrium = fluid in R middle lobe; Latrium = problem with the left lingula
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Xray of enlarged aortic knob?
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Calcification as a sign of atherosclerosis
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Eisenmenger's Syndrome
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1. Starts as a VSD, L to R shunt
2. increases flow in the pulmonary vasculature 3. Causes pulmonary hypertension 4. Shunt gets reversed R to L 5. Patient becomes Cyanotic |
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Mitral Stenosis can cause?
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L Atrial enlargement
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Couer en Sabot?
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Heart of the boot 1. RV(mediastinum) enlargement is pushing LV up 2. Caused by a tetrology of Falot
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What is a tetrology of Falot?(4)
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1. Pulmonary Stenosis
2. R-V hypertrophy 3. Overriding Aorta 4. V-SD PROVe |
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Common Vasoconstrictors(6) VCU
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1. Angiotensin 2
2. Catecholamine 3. Thromboxane(Platelets) 4. Leukotrienes 5. Endothelin 6. Alpha Adrenergic LET CAA Play |
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Common Vasodialators(4)
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1. Prostaglandins(prostacyclin) 2. Kinins
3. NO/EDRF 4. Beta 2 adrenergic PKNB |
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Describe a Tamponade(4)
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1. Fluid in pericardial space
2. less blood enters the ventricles 3. Decrease SV 4. Obstructive shock |
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Hypertrophic Cardiac Myocyte, how does it grow?(4)
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1. Sarcomeres growth by Proto-oncogenes
2. Increase size of cells not number 3. Increase Ca influx(contraction) 4. Decrease Beta receptors |
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Newborn hypertrophy(4)
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1. Lungs are shut
2. RV has a R to L shunt 3. At birth the lungs open 4. RV doesn't work as hard and atrophies |
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Concentric Hypertrophy
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1. Tissue overgrowth without overall enlargement, sarcomeres added in parallel 2. Walls of the organ are thickened
3. Capacity or volume is diminished 4. CHF here will have normal EF because all that comes in is squeezed out |
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Eccentric hypertrophy(3)
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1. Hypertrophic growth in series
2. Overall size and Volume are enlarged 3. CHF here will have a decreased EF because the weaker muscle can't squeeze out the increased volume |
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Bicuspid Aortic Valve(4)
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1. Most common Valve abnormality
2. 2 cusps instead of normal 3 3. Diastole pressure is normal, systole pressure is low(longer time) 4. one out of 75 people, Problems manifest later in life 50-60 |
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What does the silhouette of concentric hypertrophy look like?
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looks normal
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What is heart failure?
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when the heart is not able to supply enough flow to meet the bodies needs
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What are the physiological effects of CHF?(5) energy wise
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Decreased
1. FA and glucose metabolism 2. ATP generation 3. O2 consumption 4. Phosphocreatine 5. CPK |
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What causes High Output CHF?(6)
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1. Anemia
2. Thyrotoxicosis 3. Ateriovenous fistulas 4. Paget's Dz 5. Beri-Beri Dz 6. Pregnancy |
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Why does High Output CHF occur?
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Increased volume return to the heart, overloads it and causes excess strain on the pump and it will fail.
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How does the RAS work against the failing heart?
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It promotes VasoC and increased fluid retention. Overloading the pump a little more in order to get O2.
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How do the V1 and V2 ADH receptors work?
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V1 = VasoC
V2 = Antidiuretic |
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What neuro hormonal actions occur in myocardial failure(5)?
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increased; NE, RAS, ADH, ANP and BNP
Decrease B1 receptors(VasoC), and Ca mobilization(inotropic) |
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Tx for decreased Ventricular performance?
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Digoxin excites the myocardium
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Tx for sympathetic stimulation
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Beta blockers
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Tx for RAS(3)
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ACE-I, ARB, sprinolactone
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ANP and BNP effects(4)
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1. decrease resistance
2.decrease CVP 3. increase in natriuresis. 4. Decrease CO and BV |
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Metalloproteinase actions(2)
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1. Causes increased collagen degradation(remodelling)
2. Myocyte slippage occurs |
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Inhibit Metalloproteinase what happens?(4)
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1. Decreased collagen degradation
2. Fibrosis 3. Increase stiffness of tissue 4. Increase myocardial thickness |
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Alcoholic Cardiomyopathy 4 signs
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1. Lots of collagen
2. Less contraction 3. Myocardial fibrosis 4. less muscle density |
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Causes of mitral valve prolapse(5)
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1. Myxomatosis
2. Endocarditis 3. SLE/Marfans 4. Trauma 5. Cardiac fibrosis |
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Cardiogenic shock vs. CHF
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1. When LV performance is no longer able to meet systemic needs ...Acute
2. Left or right heart CHF possible, chronic condition of decreased perfusion over time |
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What is a Schwan-Ganz Catheter?
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1. Measures pul. venous pressure at the capillaries
2. measurement of LA pressure which is increased in shock 3. A sign of impending edema |
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Etiology of CHF(7)
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1. Hypertension
2. CAD 3. Myocardial Dz 4. Valvular Dz 5. Pericardial Dz 6. Congential Heart Dz 7. High output Dz |
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What are the CHF precipatating factors?(6)
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1. Inappropriate Tx or non compliance
2. Ischemic cardiomyopathy 3. Arrythmia 4. Hypertension sustained 5. ROH cardiomyopathy, pregnancy or myocarditis 6. High output |
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Framingham criteria for CHF(6)
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1. Supine Dyspnea
2. Kussumal Sign 3. Rales 4. CVP>16torr - normal 5 5. Hepatojugular reflux 6. CXR - cardiomegaly, air space, edema, kerley B lines |
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Kussmaul Sign?
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1. Deep breath and RA fills
2. Jugular should not be distended 3. If it is there is pressure back up |
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CHF Systolic characteristics?(4)
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1. Impaired muscle shortening
2. Reduced ejection fraction 3. Infarction 4. Myocarditis, vavular Dz or shunts |
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CHF Diastolic(3) causes what?
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1. Impaired compliance
2. Concentric hypertrophy 3. Systemic hypertension and aortic stenosis |
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Why no cardiomegaly in diastolic heart failure?
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Because it is usually due to increased volume, causing concentric hypertrophy.
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What is a secondary pulmonary lobule?(3)
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1. 3-5 terminal bronchioles and septa
2. Veins and lymphatics are in the septa 3. Arteries are in the center with the bronchioles |
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On a CXR what are the primary colors?
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1. Air = black
2. Blood/fluid = white 3. Connective Tissue = white |
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Significance of septa in the lungs?
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1. They are one continuous piece of tissue
2. The veins are in them at points 3. Venous swelling(edema) will cause the septa to swell |
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Radiographic signs of CHF(6)
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1. Cepahlization of blood flow in the lungs
2. Widening of vascular pedicle 3. Kerley B lines 4. Hilar Haze 5. Pleural effusions 6. Airspace edema |
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What is the vascular pedicle?
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The combination of Aorta and IVC in a CXR
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Location of the secondary lobules?
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They are at the edges of the lungs where gas exchange takes place
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What are Kerley B lines?
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1. Stair stepped lines on the outer edges of a lung CXR
2. Widening of the lobular septi 3. Visible in the lower lobes |
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What is the hilar haze?
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1. Hilar lymph nodes around pulmonary arteries
2. Lymphatics pick up the excess fluid from venous swelling first 3. Drain back to pulmonary trunk and create the haze |
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Interlobular pleural effusion is when, what?(3)
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1. After hilar haze
2. Fluid leaks out 3. Costophrenic angle is widened as the lung swells |
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What is the Batwing?(2)
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1. Late pulmonary edema due to CHF
2. The edema has made it into the alveoli |
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Emphysema and CHF
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1. Blebs have no BV
2. Therefore those areas will become opaque on a CXR easier 3. No Hstatic pressure to prevent the edema |