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CCRN Exam Cram Review

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CARDIOVASCULAR REVIEW CCRN Exam Cram Review Heart Sounds S1, S3, S4: Heard at apex S2: Heard at base S3: r/t heart failure S4: r/t MI, HTN, ventricular hypertrophy, & aortic stenosis ……………………………… Mitral stenosis is associated with atrial fibrillation due to atrial enlargement. ……………………………… Stenosis occurs with an OPEN valve. Insufficiency occurs with a CLOSED valve. ……………………………… NSTEMI: + troponin, ST depression, unrelenting chest pain. STEMI: + troponin, ST elevation, unrelenting chest pain. Prinzmetal’s (Variant) Angina: - troponin, nitroglycerin relieves chest pain and returns ST segment to normal Management of Acute Chest Pain STAT EKG done and read within 10 minutes, 325mg chewable aspirin ASAP, anticoagulant therapy, antiplatelet therapy, beta blocker administration. Use metoprolol, NOT propranolol. Treat chest pain with morphine or nitroglycerin. If symptoms have been present 12 hours, prepare for PCI. Door to balloon in 90 minutes. Door to fibrinolytic therapy in 30 minutes. ……………………………… After PCI Evidence of successful reperfusion includes chest pain relief, normalized ST segment, and reperfusion arrhythmias (VT, VF). Troponin and CK-MB remain elevated after reperfusion! Complications of PCI Monitor for signs of reocclusion… chest pain and ST elevation similar to before PCI. Monitor for vasovagal response during sheath removal. Administer atropine and fluids, hold nitrates. Monitor for signs of retroperitoneal bleeding… back pain and hypotension. HTN Emergency BP 180/110 with evidence of end-organ damage. Needs critical care admission and emergent lowering of BP. Biggest risk is STROKE. Nitroprusside Drip: preload and afterload reducer. Assess for cyanide toxicity (thiocyanate)... mental status changes, tachycardia, seizure, need for increase in dose, metabolic acidosis. Labetalol IV Push: Intermittent IV pushes preferred over drip due to the possibility of continuing drip past max of 300mg. ……………………………… Acute Peripheral Vascular Insuciency Normal ankle-brachial index is 1. Put bed in reverse trendelenburg to increase blood flow. Do NOT elevate the extremity! Medical Management: tPA, thrombolytics, heparin, anticoagulants, antiplatelets, vasodilators. 1QT Prolongation Normal QT interval is 0.36 to 0.4 seconds. Prolongation of the QT interval can lead to Torsades de Pointes! Treatment of Torsades de Pointes is magnesium. Drugs that prolong QT: amiodarone, quinidine, haloperidol, procainamide. Electrolytes that prolong QT: hypokalemia, hypocalcemia, hypomagnesemia. ……………………………… 3 Pacemaker Malfunctions Failure to Pace: No pacer spike when expected. Failure to Capture: Pacer spike occurs without QRS complex. Failure to Sense: Pacing in native beats. ……………………………… Heart Failure Elevated LVEDP. High intracardiac pressures & decreased CO. Systolic Heart Failure: Ejection problem, EF 40%. Dilated ventricle. S3 heart sound. Large, dilated heart or normal heart size on CT scan. Treatment: Beta blockers, ACE/ARBs, positive inotropes. Contraindicated: Calcium channel blockers & negative inotropes. VS Diastolic Heart Failure: Filling problem, EF 50%. Thick, hypertrophic ventricle. S4 heart sound with hypertension. Normal heart size on CT scan. Treatment: Beta blockers, ACE/ARBs, calcium channel blockers. Contraindicated: Positive inotropes (no digoxin, dopamine, or dobutamine for these patients). ……………………………… Systolic heart failure can cause valvular insufficiency r/t a dilated ventricle. Both systolic and diastolic heart failure cause pulmonary edema r/t poor ventricular emptying. Symptoms of RightSided Heart Failure: Hepatomegaly, splenomegaly, dependent edema, increased CVP, tricuspid insufficiency, abdominal pain. VS Symptoms of Left-Sided Heart Failure: Orthopnea, dyspnea, tachypnea, hypoxemia, tachycardia, crackles, cough with pink/frothy sputum, diaphoresis, anxiety, confusion, increased PAP & PAOP. ……………………………… NYHA Heart Failure Classification Class I: Symptoms caused by extraordinary activity. Class II: Symptoms caused by ordinary activity. Class III: Symptoms caused by minimal activity (such as walking to the bathroom). Class IV: Symptoms at rest. 2Cardiogenic Shock Extreme decrease in stroke volume r/t systolic dysfunction. Increased PAOP r/t increased LV preload. Increased SVR r/t compensatory vasoconstriction. Decreased CO means that perfusion to organs is inadequate. Narrow pulse pressure. Treatment: Give positive inotropes! Give norepinephrine, dopamine 10 mcg, dobutamine, or milrinone. Also, reduce preload & afterload with vasodilators in conjunction with positive inotropes, IABP, or VAD. Ventricular Assist Device (VAD) Used in the management of left ventricular heart failure, cardiogenic shock, and cardiomyopathy. Used for patients awaiting a heart transplant. Intra Aortic Balloon Pump (IABP) Inflates during diastole to increase myocardial oxygen supply. Deflates during systole to reduce left ventricular afterload.

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CARDIOVASCULAR Management of Acute HTN Emergency BP
Chest Pain STAT EKG >180/110 with evidence
REVIEW of end-organ damage.
done and read within 10
minutes, 325mg chewable Needs critical care
CCRN Exam Cram aspirin ASAP, admission and emergent
Review anticoagulant therapy, lowering of BP. Biggest
antiplatelet therapy, beta risk is STROKE.
blocker administration.
Nitroprusside Drip:
Heart Sounds Use metoprolol, NOT
preload and afterload
propranolol. Treat chest
reducer. Assess for
S1, S3, S4: Heard at apex pain with morphine or
cyanide toxicity
nitroglycerin.
S2: Heard at base (thiocyanate)... mental
If symptoms have been status changes,
S3: r/t heart failure present <12 hours, tachycardia, seizure, need
prepare for PCI. Door to for increase in dose,
S4: r/t MI, HTN, metabolic acidosis.
balloon in 90 minutes.
ventricular hypertrophy, &
Door to fibrinolytic therapy
aortic stenosis Labetalol IV Push:
in 30 minutes.
Intermittent IV pushes
………………………………
……………………………… preferred over drip due to
Mitral stenosis is the possibility of
associated with atrial continuing drip past max
After PCI Evidence of of 300mg.
fibrillation due to atrial
successful reperfusion
enlargement. ………………………………
includes chest pain relief,
……………………………… normalized ST segment,
and reperfusion
Stenosis occurs with an Acute Peripheral Vascular
arrhythmias (VT, VF).
OPEN valve. Troponin and CK-MB Insuciency Normal
Insufficiency occurs with remain elevated after ankle-brachial index is
a CLOSED valve. reperfusion! >1. Put bed in reverse
trendelenburg to increase
………………………………
blood flow. Do NOT
NSTEMI: + troponin, ST elevate the extremity!
depression, unrelenting
Complications of PCI
chest pain. Monitor for signs of re-
Medical Management:
occlusion… chest pain
STEMI: + troponin, ST tPA, thrombolytics,
and ST elevation similar to
elevation, unrelenting heparin, anticoagulants,
before PCI.
chest pain. antiplatelets, vasodilators.
Monitor for vasovagal
Prinzmetal’s (Variant) response during sheath
Angina: - troponin, removal. Administer
nitroglycerin relieves atropine and fluids, hold
chest pain and returns nitrates.
ST segment to normal
Monitor for signs of
retroperitoneal
bleeding… back pain
and hypotension.


1

,QT Prolongation Systolic Heart Failure: Symptoms of Right-
Normal QT interval is Ejection problem, EF < Sided Heart Failure:
0.36 to 0.4 seconds. 40%. Dilated ventricle. Hepatomegaly,
S3 heart sound. Large, splenomegaly, dependent
Prolongation of the QT dilated heart or normal edema, increased CVP,
interval can lead to heart size on CT scan. tricuspid insufficiency,
Torsades de Pointes! abdominal pain.
Treatment: Beta
Treatment of Torsades blockers, ACE/ARBs,
de Pointes is positive inotropes. VS
magnesium.
Contraindicated: Symptoms of Left-Sided
Drugs that prolong QT: Calcium channel Heart Failure: Orthopnea,
amiodarone, quinidine, blockers & negative dyspnea, tachypnea,
haloperidol, inotropes. hypoxemia, tachycardia,
procainamide. crackles, cough with
VS
pink/frothy sputum,
Electrolytes that prolong
diaphoresis, anxiety,
QT: hypokalemia, Diastolic Heart Failure:
confusion, increased PAP
hypocalcemia, Filling problem, EF >
& PAOP.
hypomagnesemia. 50%. Thick,
hypertrophic ventricle. ………………………………
……………………………… S4 heart sound with
hypertension. Normal
heart size on CT scan. NYHA Heart Failure
3 Pacemaker
Treatment: Beta Classification
Malfunctions
blockers, ACE/ARBs,
calcium channel Class I: Symptoms
Failure to Pace: No
blockers. caused by extraordinary
pacer spike when
activity.
expected.
Contraindicated:
Positive inotropes (no Class II: Symptoms
Failure to Capture:
digoxin, dopamine, or caused by ordinary
Pacer spike occurs
dobutamine for these activity.
without QRS complex.
patients).
Class III: Symptoms
Failure to Sense: Pacing
……………………………… caused by minimal activity
in native beats.
(such as walking to the
……………………………… Systolic heart failure can bathroom).
cause valvular
Class IV: Symptoms at
insufficiency r/t a dilated
Heart Failure Elevated rest.
ventricle.
LVEDP. High intracardiac
Both systolic and diastolic
pressures & decreased
heart failure cause
CO.
pulmonary edema r/t poor
ventricular emptying.




2

, Cardiogenic Shock Post-Op CABG Nursing Cardiac Trauma The
Extreme decrease in Care Monitor for aortic valve is most
stroke volume r/t systolic complications of cardiac likely to be ruptured
dysfunction. tamponade and because it is most
pericarditis. anterior. Pain is worse
Increased PAOP r/t with inspiration. ST
increased LV preload. Do not clamp or milk chest elevation present in the
tubes, maintain dependent area of injury only.
Increased SVR r/t
drainage with Worse outcome than
compensatory
NO LOOPS IN TUBING. pericarditis.
vasoconstriction.
Monitor for chest tube VS
Decreased CO means
output > 100mL for two
that perfusion to organs
consecutive hours. Pericarditis ST
is inadequate.
……………………………… elevation in ALL LEADS
Narrow pulse pressure. (aka “global” ST
elevation). Pain is worse
Treatment: Give
Valve Replacement with inspiration.
positive inotropes!
High risk for blood clots, Dressler’s Syndrome is
Give norepinephrine,
need anticoagulation! pericarditis that occurs
dopamine < 10 mcg,
after MI, surgery, or injury.
dobutamine, or
Avoid a drop in preload!
milrinone.
May result in dangerous
………………………………
Also, reduce preload & hypotension.
afterload with
Conduction disturbances
Thoracic Aneurysms
vasodilators in Aneurysms >6 cm needs
r/t surgery near SA/AV
conjunction with surgery and blood
nodes. May need a
positive inotropes, pressure control with a
temporary or permanent
IABP, or VAD.
pacemaker. labetalol drip.

Ventricular Assist Device ……………………………… Sudden tearing, ripping
pain in chest, radiating to
(VAD) Used in the shoulders/back, cough,
management of left Cardiac Tamponade and widening
ventricular heart failure, Symptoms: mediastinum on X-ray
cardiogenic shock, and Hypotension, JVD, indicate a RUPTURE,
cardiomyopathy. Used for muffled heart tones, which is a surgical
patients awaiting a heart equalization of emergency!
transplant. CVP/PAOP, narrowed
pulse pressure, pulsus
Intra Aortic Balloon Pump paradoxus, enlarged
cardiac silhouette.
(IABP) Inflates during
diastole to increase Pulsus Paradoxus is a
myocardial oxygen drop in SBP during
supply. Deflates during inspiration.
systole to reduce left
ventricular afterload.



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