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Pharm Ch. 13; Drugs used in heart failure Flashcards

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2876075041Heart failureOccurs when cardiac output is inadequate to provide the oxygen needed by the body0
287607890550%5 year mortality of heart failure1
2876081592CADMost common cause of heart failure in the USA2
2876083057Systolic failure50% of younger patients have ______, with reduced contractility and reduced ejection fraction3
2876085678Diastolic failure50% of younger patients have _________ with stiffening and loss of adequate relaxation playing a major role in reducing filling and cardiac output4
2876090239Ejection fraction___________ may be normal even though stroke volume is significantly reduced5
2876094426DiastolicThe proportion of patients with ______ failure increases with age6
2876125360Excitation-contraction couplingThe primary defect in early systolic heart failure resides in the _________ machinery of the heart7
2876141822Non-cardiac targetsTherapy directed at __________ is more valuable in the long-term treatment of heart failure than traditional positive inotropic agents such as cardiac glycosides (digitalis)8
2876154786ACE inhibitors, AT receptor blockers, beta blockers, aldosterone receptor antagonists, and combined hydralazine therapyAgents in current use that prolong the life of patients in chronic heart failure; useful in both systolic and diastolic failure9
2876159065Positive inotropic drugsDrugs that are helpful in acute systolic failure10
2876166411Cardiac glycosidesReduce symptoms in chronic systolic heart failure11
2876172650Chronic heart failureDiuretics, aldosterone receptor antagonists, ACE inhibitors, AT receptor blockers, beta blockers, cardiac glycosides, vasodilators12
2876176860Acute heart failureDiuretics, vasodilators, beta agonists, bipyridines, natriuretic peptide13
2876181737CalciumCardiac contraction results from the interaction of ______ during systole with the actin-troponin-tropomyosin system14
2876201872LevosimendanDrug that increases calcium sensitivity and reduces symptoms in models of heart failure15
2876204585Omecantiv mecarbilAlters the rate of transmission of myosin from a low-actin binding state to a strongly actin-bound force-generating state16
2876215686RyRA small rise in free cytoplasmic calcium, brought about by calcium influx during AP, triggers the opening of ________ in the membrane of cardiac SR and the rapid release of a large amount calcium into the cytoplasm17
2876235737SERCA pumpPump maintains free cytoplasmic calcium at very low levels during diastole by pumping calcium into the SR18
2876239150PospholambanSERCA is normally inhibited by __________19
2876242130Beta agonistsPhosphorylation of phospholamban by PKA (Beta agonists) removes this inhibition20
2876250266SNSThe amount of calcium sequestered in the SR is determined (partly) by the ______ activity21
2876303147SympathomimeticsCause an increase in calcium influx through an action on channels22
2876323384Calcium channel blockersReduce this influx and depress contractility of cardiac tissue23
2876327108NCX antiporterUses the sodium gradient to move calcium against its concentration gradient from the cytoplasm to the extracellular space24
2876332500Na/K ATPase channelsRemoves intracellular sodium Major determinant of sodium concentration in the cell25
2876338584DigoxinN/K ATPase is the primary target of ______ and other cardiac glycosides26
2876355812Systolic dysfunction__________ with reduced cardiac output and significantly reduced ejection fraction (<45%) is typical of acute failure, especially that resulting from MI27
2876358666Diastolic dysfunctionOften occurs as a result of hypertrophy and stiffening of the myocardium Cardiac output may be reduced while ejection fraction may be normal28
2876367402Positive inotropic drugsHeart failure due to diastolic dysfunction does not response optimally to __________.29
2876372326High-output failureRare form of heart failure where the demands of the body are so great that even increased cardiac output is insufficient Responds poorly to drugs30
2876379202Hyperthyroidism, beriberi, anemia, and AV shuntsCauses of high-output failure31
2876391980Tachycardia, dyspnea, cardiomegaly, edemaPrimary signs and symptoms or heart failure32
2876394153Diminished cardiac outputDecreased exercise tolerance with rapid muscular fatigue is the major direct consequence of ___________.33
2876400046Extrinsic compensationNeurohumoral or _________ involves the SNS and renin-angiotensin-aldosterone hormonal response.34
2876406509BaroreceptorThis reflex resets with a lower sensitivity to arterial pressure in extrinsic compensation.35
2876418270Decreased Carotid Sinus Firing-Increased sympathetic discharge -Increases force, rate, and preload36
2876422746Decreased blood flow-Increased renin release -Increased AT II -Increased preload, after load, and remodeling37
2876431749Increased sympathetic outflowCauses tachycardia, increased cardiac contractility, and increased vascular tone38
2876442324ATII and endotheliaVascular tone is further increased by __________39
2876443868EndothelinPotent vasoconstrictor released by vascular endothelial cells40
2876445025AfterloadVasoconstriction increases _______, which further reduces ejection fraction and cardiac output41
2876458685Beta oneDown-regulatory changes to the _____ adrenoceptor-G protein-effector system result in diminished stimulatory effects42
2876462709Beta twoReceptors are not down-regulated and may develop increased coupling to the IP3-DAG cascade43
2876467613Beta threeHas been suggested the cardiac _____ receptors may mediate negative inotropic effects44
2876472823Beta activationExcessive _________ can lead to leakage of calcium from the SR via RyR channels and contributes to stiffening of the ventricles and arrhythmias.45
2876476485CaspasesProlonged beta activation increases ________, the enzyme responsible for apoptosis46
2876479471ATIIIncreased _____ leads to increased aldosterone secretion with associated salt and water retention. The after load is increased47
2876487818ArrhythmogenesisChanges in ion channels, particular potassium channels leads to __________.48
2876493207RyR channelsPhosphorylation of ______ in the sarcoplasmic reticulum enhances Ca2+ release49
2876497441Protein phosphatease 1 (PP1)Enzyme that is primarily responsible for RyR dephosphorylation is unregulated in heart failure50
2876524020Myocardial hypertrophyMost important intrinsic mechanism51
2876529723Hypertrophy_______ can lead to ischemic changes, impairment of diastolic filling and alterations in ventricular geometry52
2876531589RemodelingTerm applied to dilation (other than that due to passive stretch) and other slow slow structural changes in the myocardium53
2876536475ApoptosisMyocytes in the failing heart die at an accelerated rate through ________54
2876540282Left ventricular function curveMeasure of left ventricular performance such as stroke volume or stroke work is plotted as a function of left ventricular filling pressure or end-diastolic fiber length55
2876546214Preloads_____>20-25 mm Hg result in pulmonary congestion56
2876551424Blood volume and venous tonePreload is usually increased in heart failure because of increased ________ and ________57
2876556715filling pressuresThe goal of a low salt diet is to decrease _________.58
2876561396PreloadVentilator drugs such as nitroglycerin reduce preload by redistributing blood away from the chest into the peripheral veins59
2876564881AfterloadResistance against which the heart must pump blood Represented by aortic impedance and systemic vascular resistance60
2876568645Systemic vascular resistanceAs cardiac output falls in chronic heart failure, a reflex increase in _________ occurs. It is mediated by increased sympathetic outflow and circulating catecholamines61
2876578008heart rateMajor determinant of cardiac output62
2876582173Beta adrenoreceptorsAs stroke volume diminishes, and increase in heart rate through sympathetic activation of _______ is the first compensatory mechanism that maintains cardiac output63
2876592760DigoxinPrototype of cardiac glycosides or cardenolides64
2876594095pH dependentBecause glycosides lack an easily ionizable group, their solubility is not _________.65
2876597489Oleander, lily of the valley, milkweedPlants with digoxin like activity66
287660190965-80%Digoxin is _____ absorbed after oral administration67
2876602850DigoxinOnly cardiac glycoside in use in the United States68
2876606154Widely distributedOnce present int he blood, all cardiac glycosides are _________ to tissues, including the CNS69
2876609643kidneysDigoxin is not extensively metabolized by the _______.70
2876611249Creatinine clearanceThe renal clearance of digoxin is proportional to the __________.71
287661310936 hoursThe half-life of digoxin in patients with normal renal function is ______.72
2876616519Na/K ATPaseAll therapeutically useful cardiac glycosides inhibit the ________.73
2876625117Free calciumCardiac glycosides increase _______ of the cardiac sarcomere by increasing the ________ concentration in the vicinity of the contractile proteins during systole74
2876629279Intracellular sodiumCardiac glycosides increase intracellular calcium via a two step process. First, the ______ increases due to Na/K ATPase inhibition. Second, there is a reduction in calcium expulsion from the cell by the NCX (sodium-calcium exchanger)75
2876635337SERCAThe increased intracellular calcium associated with cardiac glycosides is sequestered by the _______ pump.76
2876644469Tension and relaxationThe development of ________ and ________ are increased with little change in time to peak tension when cardiac glycosides are administered77
2876651190GlycosidesThe electrical effects of ________ are as follows: prolonged AP, increased K+ conductance, reduction in resting membrane potential (most positive)78
2877958393Delayed after-depolarizations (DADs)As glycoside toxicity progresses, oscillatory depolarizing after-potentials appear following normally evoked action potential Associated with overloading intracellular calcium stores79
2877968901Premature depolarizationsOccur when after-potentials reach threshold Couple to preceding AP May create bigeminy80
2877979919Digoxin toxicityTachycardia may deteriorate into fibrillation in the case of ________ toxicity.81
2877984839Parasympathomimetic effectsIn the lower range for digoxin dosage, _______ (atropine-blockablp)predominate.82
2877988766DigitalisEarly actions of digitalis include sensitization of baroreceptors, central vagal stimulation, and facilitation of muscarinic transmission at the cardiac muscle cell83
2877993142AtriaCholinergic innervation is much richer in the _____84
2877995346Atria and AV nodeDigitalis initially affects the ______ and ______ substantially more than the Purkinje fibers or ventricular function85
2878002469sympatheticAt toxic levels, ______ outflow is increased by digitalis86
2878006570AV junctional rhythm, premature ventricular depolarization, bigeminal rhythm, second-degree AV blockadeMost common cardiac manifestations of digitalis toxicity87
2878008792GI tractMost common site of digitalis toxicity outside the heart Anorexia, nausea, vomiting, and diarrhea88
2878013170SA nodeHeart tissue that has decreased rate at both therapeutic and toxic doses of digitalis89
2878014521Atrial muscleDigitalis affects the ______ by decreasing the refractory period at both therapeutic and toxic doses. At toxic doses, arrhythmia also occurs.90
2878018157AV nodeDigitalis decreases conduction velocity and increases the refractory period at the _______ at therapeutic doses. At toxic doses, there is a decrease in refractory period and the possibility of arrhythmia91
2878023829Purkinje system, ventricular muscleDigitalis Therapeutic doses: slight decrease in refractory period Toxic doses: extrasystoles, tachycardia, fibrillation92
2878026741ECGDigitalis Therapeutic- increased PR interval, decreased QT interval Toxic- tachycardia, fibrillation, and arrest93
2878037837HyperkalemiaReduces the enzyme-inhibiting actions of glycosides94
2878038891HypokalemiaFacilitates the actions of glycosides95
2878044364CalciumFacilitates the toxic actions of cardiac glycosides by accelerating the overloading of intracellular _______ stores that appear to be responsible for digitalis-induced abnormal automaticity96
2878051183HypercalcemiaIncreases the risk of digitalis-induced arrhythmia97
2878053933HypermagnesmiaDecreases the risk of digitalis induced arrhythmia98
2878059022IstaroximeInvestigational steroid derivative that increases contractility by inhibiting Na/K ATPase and facilitates sequestration of Ca2+ by the SR99
2878066592ArrhythmogenicBecause Istaroxime facilitates calcium sequestration, the drug is less _________ that digoxin100
2878074422phosphodiesterasesDrugs that inhibit ___________ (cAMP and cGPM inactivators) have long been used in therapy of heart failure101
2878078196vasodilationThough phosphodiesterases have positive inotropic effects, most of their benefits appear to derive from _________102
2878082572Inamrinone and milrinoneMost successful bipyridines Inhibit phosphodiesterases103
2878084762LevosimendanDrug that sensitizes the troponin system to calcium; appears to inhibit phosphodiesterase and cause so vasodilation in addition to its inotropic effects104
2878098107Inamrinone and milrinoneBipyridine compounds that inhibit PDE-3 Active orally and parenterally; available only parenterally105
28781008843-6 hoursInamrinone and milrinone have a half-life of ______ and are 10-40% excreted in the urine106
2878119947inward calcium fluxBipyridines increase myocardial contractility by increasing the ________ during the AP Bipyridines may also alter the intracellular movements of calcium by influencing the SR Have important vasodilating effects107
2878128763contractility and vasodilationInhibition of posphodiesterase results in an increase in cAMP and an increase in _________ and _________108
2878130781InamrinoneThe toxicity of ______ includes nausea and vomiting, arrhythmias, thrombocytopenia, and liver enzyme changes109
2878134227MilrinoneOf the bipyridines, ________ appears less likely to cause bone marrow and liver toxicity than inamrinone. It does cause arrhythmias110
2878138717Acute heart failureInamrinone and milrinone are used only intravenously for _______ or severe exacerbation of chronic heart failure111
2878141648DobutamineThe selective beta-1 agonist that has been most widely used in patients with heart failure is ________112
2878143311parenterallyDobutamine is administered _________113
2878145402Cardiac output, ventricular filling pressureDobutamine produces as increase in ______ and a decrease in _________.114
2878148932angina, arrhythmia, tachyphylaxisThe potential for producing ______ or _______ in patients with CAD is significant as is the ________ that accompanies the sue of any beta-stimulant115
2878157466Diuretics, ACE inhibitors, ATIIr antagonists, aldosterone antagonists, and beta blockersFirst line therapies for chronic heart failure116
2878162127FurosamideDiuretics, especially ______ are drugs of choice in heat failure Have no direct effect on cardiac contractility117
2878164969Ventricular preloadThe mechanism of diuretics in heart failure it to reduce venous pressure and __________. This results in reduction of salt and water retention and edema and its symptoms118
2878169899Spironolactone and eplerenoneAldosterone antagonis diuretics Have the additional benefit of decreasing forbidding and mortality in patients with severe heart failure who are also receiving ACE inhibitors and other standard therapy119
2878174994baroreceptor dysfunctionIt is thought that aldosterone may cause myocardial and vascular fibrosis and ___________ in addition to its renal effects120
2878208711AfterloadACE inhibitors reduce ________. They also reduce salt and water retention by reducing aldosterone secretion, which reduces preload121
2878218959Norepinephrine releaseThe reduction in tissue angiotensin levels reduces sympathetic activity through diminution of angiotensin's presynaptic effects on ______________122
2878275941ACE inhibitorsAT receptor blockers should be considered in patients intolerant of ACE inhibitors because of incessant cough123
2878280555AliskirenRenin inhibitor approved for hypertension124
2878283900preload, afterloadVasodilators are effective in acute heart failure because they provide a reduction in _______ though ventilation or a reduction in ________- through arteriolar dilation125
2878288116Hydralazine and isosorbide dinitrateUse of ________ and ________ can reduce damaging remodeling of the heart126
2878289586NesiritideA synthetic form of endogenous peptide BNP approved for use in acute (not chronic) cardiac failure127
2878292598cGMPNesiritide increases _____ in smotth muscle cells and reduces venous and arteriolar tone in experimental preparations Also causes diuresis128
287829876920 minutesThe half-life of nesiritide is short at ______. It is initially administered as an IV bolus followed by continuous infusion129
2878301400hypotensionThe most common adverse effect of nesiritide is excessive _______. Significant renal damage and death have occasionally occurred130
2878305286Endogenous BNPPlasma concentrations of _________ increase in most patients with heart failure and are correlated with severity131
2878308899Carperitide and UlaritideSynthetic analogs of ANP and urodilantin132
2878310934Bosentan and tezosentanOrally active competitive inhibitors of endothelia133
2878312383pulmonary hypertensionBosentan has been approved for use in ________. It has significant teratogenic and hepatotoxic effects134
2878317790Bisoprolol, carvedilol, metoprolol, nebivololBeta blockers associated with a reduction in mortality in patients with severe stable heart failure *Effect not seen with bucindolol135
2878323026Beta blcokersAnttentuate adverse effects of high concentrations of catecholamines, up-regulation of beta receptors, decreased heart rate, and reduced remodeling through inhibition of the mitogenic activity of catecholamines136
2878326922Stage AStage of heart failures where patients are at high risk because of other disease but have no sign or symptoms of heart failure137
2878329432Stage BPatients have evidence of structural heart disease but no symptoms of failure138
2878330765Stage CPatients have structural heart disease and symptoms of failure Symptoms are responsive to ordinary therapy139
2878331812Stage DPatients have heart failure refractory to ordinary therapy and specify interventions Resynchronization therapy or transplant are required140
2878333182Stage COnce ______ is reached, the severity of heart failure is usually described according to a scale devised by the NY heart association141
2878335707Class I_____ heart failure is associated with no limitations on ordinary activities. Symptoms only occur with greater than normal exercise142
2878338077Class II________ is characterized by slight limitation of activities Results in fatigue and palpitations with ordinary physical activity143
2878340679Class III______ results in no symptoms at rest Fatigue, SOB, and tachycardia occur with less that ordinary physical activity144
2878342359Class IVAssociated with symptoms, even when the patient is at rest145
2878344070A, prefailureNo symptoms but risk factors present Treat obesity, hypertension, diabetes, hyperlipidemia etc.146
2878344896B, ISymptoms with severe exercise ACEI/ARB, beta blcoker, diuretic147
2878346272C, II/IIISymptoms with marked (class II) or mild (class III) exercise Add aldosterone antagonist, digoxin; CRT, hydralazine/nitrate to ACEI/ ARB, beta-blocker and diuretic148
2878349554D, IVSevere symptoms at rest Transplant, LVAD149
2878352127ThiazideDiuretic used in very mild failure150
2878352833FurosamideLoop agent used for symptomatic heart failure151
2878353978PotassiumSodium loss causes secondary loss of ______, which is particularly hazardous for patients taking digitalis152
2878355666HypokalemiaCan be treated with potassium supplementation or through the addition of an ACE inhibitor or potassium-sparing diuretic such as spironolactone153
2878358316ACE inhibitorIn patients with left ventricular dysfunction and no edema, a ______ should be the first drug used154
2878361173DigoxinACE inhibitors cannot replace _______ in patients that already receive the glycoside Patients that withdraw from _____ deteriorate while ACE therapy155
2880304070Ventricular dilationBy reducing preload and after load in asymptomatic patients, ACE inhibitors slow the progress of ________.156
2880306806ACE inhibitorsMedication that is useful in all subsets of patients Asymptomatic to severe and chronic failure157
2880313134AT-1 receptor blockersProduce beneficial hemodynamic effects similar to those of ACE inhibitors These medications are best reserved for patients who cannot tolerate ACE inhibitors158
2880321532Venous dilators (nitrates)In patients with high filling pressures in whom the principal symptom is dyspnea, _______ such as _______ will be most helpful in reducing filling pressures and the symptoms of pulmonary congestion159
2880327839HydralazineIn a patient with low left ventricular output, an arteriolar dilator such as _______ may be helpful in increasing cardiac output160
2880340824BiDilFixed combination of ACE hydrazine and isosorbide dinitrate Approved for use only in African Americans161
2880351767Bisoprolol, carvedilol, metoprolol, nebivololReduce mortality162
2880355119Heart failure and A-fibDigoxin is indicated in patients with _____ and ______ if ACE inhibitors and diuretics have failed to control symptoms163
288035983850%About _____ of patients with a normal sinus rhythm will have relief of heart failure with digitalis treatment164
2880371369Therapeutic end pointWith digitalis, toxic effects occur before the _______ is reached165
2880376832DecreasedMortality is decreased in patients with serum digoxin concentrations <0.9 mg/mL but increased when digoxin levels > 1.5 ng/mL166
2880741538Wolff-Parkinson White syndromeDigoxin is explicitly contraindicated in patients with ___________ and atrial fibrillation167
2880755917WPW syndromecaused by the presence of an abnormal accessory electrical conduction pathway between the atria and the ventricles. Electrical signals traveling down this abnormal pathway (known as the bundle of Kent) may stimulate the ventricles to contract prematurely, resulting in a unique type of supraventricular tachycardia referred to as an atrioventricular reciprocating tachycardia168
2880764169Renal dialysisIf administering digitalis, it is particularly important to monitor potassium levels in patients on _______.169
2880769065elevatedIn severe digitalis intoxication, serum potassium will already be _______ at the time of diagnosis170
2880776263Digoxin immune fabIf severe digoxin intoxication occurs, it is important to insert a pacemaker and administer ________.171
2880782202arrhythmiasDigitalis-induced _______ are frequently made worse by cardioversion172
2880791351NebivololEffective in both systolic and diastolic failure173
2880803250FurosemideMost commonly used diuretic174
2880805284Dopamine or dobutaminePositive inotropic drugs with prompt onset and short durations of action Most useful in patients with severe hypertension175
2880809909Nitroprusside, nitroglycerine, and nesiritideVasodilators used in patients with acute decompensation176
2880811456ConivaptanParenteral treatment of euvolemic hyponatremia177
2880817084Vasopressin antagonistsDo not seem to reduce mortality178
2880820681FurosamideLoop diuretic: Decreases NaCl and KCl reabsorption in thick ascending limb of the loop of Henle in the nephron Increased excretion of salt and water • reduces cardiac preload and afterload • reduces pulmonary and peripheral edema179
2880828562Acute and chronic heart failure, severe hypertension, and edematous conditionsFurosemide can be used for _________.180
2880834030Hypovolemia, hypokalemia, orthostatic hypotension, ototoxicity, and sufa allergyFurosemide toxicities181
2880846100oral and IVFurosemide is available in _______ forms. The duration is 2-4 hours182
2880835793HydrochlorothiazideDecreases NaCl reabsorption in the DCT Effects same as furosemide; less effective183
2880841387Mild chronic failure and mild-moderate hypertensionHydrochlorothiazide is used in _______. It has not been shown to reduce mortality184
2880848785OralHydrochlorothiazide is available in ______ form only. It's duration is 10-12 hours185
2880853172Hyponatremia, hypokalemia, hyperglycemia, hyperuricemia, hyperlipidemia, sulfa allergyAdverse effects of hydrochlorothiazide186
2880858099Bumetonide and torsemideLoop diuretics similar to furosemide187
2880859624SpironolactoneBlocks cytoplasmic aldosterone receptors in collecting tubules of nephron • possible membrane effect ncreased salt and water excretion • reduces remodeling • reduces mortality188
2880907693Chronic heart failure, HTN and aldosteronismSpironolactone is used for __________. It has been shown to reduce mortality189
2880912289Hyperkalemia and antiandrogen actionsThe toxicity of spirinolactone includes _______ and _______. Duration is 24-72 hours with low onset and offset190
2880918854Cirrhosis and adrenal tumorAldosteronism is frequently associated with 2 diseases191
2880923829ATI to ATIIACE inhibitors such as captopril inhibit the conversion of ____ to ____192
2880930217Arteriolar and venous dilation, reduced aldosterone secretion, and reduced cardiac remodelingThe effects of ACE inhibitors include _________, ________193
2880935753Chronic heart failure, HTN, diabetic renal diseaseACE inhibitors are used for _______. They have been shown to reduce mortality194
2880978249Cough, hyperkalemia, angioneurotic edemaACE inhibitor toxicity Additive with other AT antagonists195
2880981777OrallyACE inhibitors are administered. The half life is short, but they are given every 12-24 hours in large doses196
2880988876ARBsAntagonize all effects of AT-1 receptors Actions similar to ACE inhibitors197
2880990992ACE inhibitorsARBs are used in patients that cannot tolerate ________. They do reduce mortality198
2880998455OralARBs are available in ____ form. The duration is 6-8 hours.199
2881002027Hyperkalemia, angioneurotic edemaSide effects of ARBs include _________. These are additive with other angiotensin antagonists200
2881006872Beta blockersMedications such as carvedilol that competitively block beta 1 receptors201
2881011361Decreased HR, BP, heart failureActions of beta blockers include ____________202
2881014061chronic heart failureBeta blockers are used to ________ and reduce mortality in moderate and severe heart failure.203
2881016404Oral_____ administration is used for beta blockers. Their duration of action is 10-12 hours.204
2881020678Bronchospasm, bradycardia, AV block, acute cardiac decompensationDis effects of beta blockers include __________.205
2881021793DigoxinNa+/K+-ATPase inhibition results in reduced Ca2+ expul- sion and increased Ca2+ stored in sarcoplasmic reticulum206
2881026794contractility and parasympathomimetic effectDigoxin increases cardiac ______ and ________, which is seen with a slowed sinus HR and slowed AV conduction207
2881064228Chronic symptomatic heart failureDigoxin is used for __________ and rapid ventricular rate in atrial fibrillation It has not been definitively shown to reduce mortality208
2881066340Oral or parenteralDigoxin is administered ______ or _______. It lasts 36-40 hours209
2881095202Nausea, vomiting, diarrhea, and cardiac arrhythmiaThe toxicity of digoxin is apparent with the following symptoms:210
2881100105VenodilatorIsosorbide dinitrate is a _______. It causes NO release and activates guanylyl cyclase211
2881102676preload and ventricular stretchVenodilators decrease ______ and _____.212
2881105217Acute and chronic hear failure and anginaVenodilators are used for ________.213
2881110881Postural hypotension, tachycardia, and headacheSide effects of venodilators are __________. Administration is oral214
2881112093PDE5iVenodilators are additive with other vasodilators and have a synergistic effect with _______.215
2881120484Arteriolar dilators_______ such as hydrazine increase NO synthesis in endothelium216
2881122066reduces BP and afterloadHydralazine and other arteriolar dilators reduce ____ and ______, resulting in higher CO217
2881124764NitratesHydralazine + _______ have reduced mortality218
2881131138Tachycardia, fluid retention, lupus-like syndromeToxicities of hydrazine include _______219
2881140747NitroprussideCombined arteriolar and venodilator Release NO spontaneously and activates GC220
2881150755NitropurssideUsed for acute cardiac decompensation and hypertensive emergencies such as malignant hypertension221
2881152354IVNitroprusside is available via ____ administration. The duration is 1-2 minutes222
2881156516Hypotension, thiocyanate, and cyanide toxicitySide effects of nitroprusside include __________. It is additive with other vasodilators223
2881161028Dobutamine________ is a beta-1 selective agonist that increases cAMP synthesis.224
2881163300Cardiac contractility and outputDobutamine increases _______ and _______225
2881168417Acute decompensated heart failure and intermittent therapy in chronic failureDobutamine is used for _______ and ________ to reduce symptoms226
2881169521IVDobutamine is administered by _____. The duration of action is only a few minutes227
2881171042ArrythmiaThe most common dobutamine toxicity is ________. It has additive interactions with other sympathomimetics228
2881177993DopamineDopamine receptor agonist; higher doses activate beta and alpha adrenoceptors Acts by increasing renal blood flow (low dose)229
2881185451Cardiac force and BPHigher doses of dopamine increase _______ and _______230
2881188654Acute decompensated heart failureDopamine is used for ________ and shock.231
2881203684IVDopamins is administered via ____. The duration is only a few minutes232
2881223436SympathomimeticsThe action of dopamine is additive with _______.233
2881226010Bipyridines______, such as inamrinone and milrinone are PDE3 inhibitors that decrease cAMP breakdown234
2881229787vasodilatorsBipyridines are ______. they lower peripheral vascular resistance and increase cardiac contractility235
2881232968Acute decompensated heart failureBipyridines are used in ________. They are not used in chronic failure due to an increase in mortality236
2881242974arrhythmogenicBipyridines are additive with other _________ agents.237
2881322933NesiritideActivates BNP receptors and increases cGMP238
2881324427vasodilation and diuresisNesiritide causes ______ and ______239
2881325815Acude decompensated failureNesiritide is used for ________. It has not been shown to reduce mortality240
2881327234IVNesiritide is administered via ____. The duration is 18 minutes241
2881328986Renal damage, hypotensionNesiritide toxicity is associated with ______ and ______. It may increase mortality as well.242

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