cardiology
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what results in 80-90% mortality rate even with the best care possible | cardiogenic shock
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what drug is contraindicated in the treatment of cardiogenic shock | Inderal (propranolol)
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the amount of blood ejected by the heart in one cardiac contraction is known as | ejection fraction
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the pressure in the ventricle at the end of diastole is known as | preload
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what is the equation for blood pressure | SV x HR x SVR
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During ventricular systole which valves open | aortic
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the electrical pathway | 1,SA 2.inter nodal pathways 3.AV 4.bundle of HIS 5. bundle branches 6. purkinje fibers
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The sympathetic receptors that are located in the blood vessels and responsible for vasoconstriction | alpha 1 receptors
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the cardiac contractile force is called | inotropy
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the heart sound heard by closure of the AV valves is | S1
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a junctional escape rhythm originates from the | AV node when the SA node is firing at a slower rate than the AV
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an infarction that involves the entire thickness of the myocardium | transmural
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What rhythm requires trans cutaneous pacing | 3rd degree AV block
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the time an impulse takes to travel from the atria to the ventricles is known as | PR interval
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a normal QRS lasts | 0.04-0.12 secs
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the absolute refractory period is from the | beginning of the QRS to the apex of the T wave
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to perform standard TCP, set the demand rate to | 60-80 bpm
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V-fib can | 1.mimic artifact on the monitor 2.may produce a peripheral pulse 3. should be treated with early defibbrilation
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when initiating TCP in a pulsing patient you should begin with the mA output set at | the minnimum setting 0
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Hypokalemia treatment | transport
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treatment for RT sided heart failure | fluids
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Hyperkalemia treatment | calcium chloride/sodium bicarb/insulin and glucose
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A goal to treat left ventricular failure is to | decrease myocardial oxygen demand
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this disease leads to: organ engorgement,venous distention,pitting edema,ascites and or pericardial tamponade | right ventricular heart failure
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which arrythmia is commonly associated with sudden death | V-fib
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a sound produced by the body to protect the lungs during LVHF | Wheezing
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BP on the left arm and hard to read on the right, patient is suffering from | a dissecting ascending aorta
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sharp tearing pain between the scapula, patient is suffering from | dissecting aneurysm
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pain comes on suddenly and is 10 from onset | aneurysm
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pain usually lasts 3-5 mins but can last up to 15 mins | stable angina
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pain may come on gradually and build with intensity over the time with resulting irreversable tissue death | myocardial infarction
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pain is usually found in the lower back or flank region it can radiate to the thigh, groin and perineum | aneurysm
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pain usually comes on at rest it can be relieved over time by O2 rest and nitro | unstable angina
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the greater the venous return, the greater the preload, the greater the force of contraction and the greater the stroke volume is describing what | Starlings law
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Atrial systole force is determined by | preload and stretch of ventricles
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LVHF signs and symptoms | resp distress,apprehension,cyanosis,diaphoresis,resp acidosis,rales,rhonchi,wheezing,JVD,altered,HTN,CP,tachy/irregular,tachyapnea
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Cor pulmonale | HTN in the lungs which causes right ventricular hypertrophy
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the cell is negative on the inside compared to the outside | resting potential (polarization)
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K+ movement out of the cell starts this phase | repolarization
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This phase is responcible for muscle contraction | action potential (depolarization)
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cell is considered the most positive on the inside compared to the outside | action potential (depolarization)
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small box represents | 0.04 sec
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a large box represents | 0.20sec
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