Cardiology Flashcards
______ is a very common in association with MI because of vascular insufficiency of the sinoatrial (SA) node. There are NO cannon A waves.
Sinus Bradycardia
____ will have cannon A waves. Cannon A waves are produced by atrial systole against a closed tricuspid valve.
Third-degree (complete) AV block
How do you treat Right Ventricular Infarctions?
High-volume fluid replacement.
Avoid nitroglycerin, they markedly worsen cardiac filling,
What complication of Acute MI present with new onset of a murmur and rales/pulmonary congestion?
Valve Rupture
What is the most accurate test for both valve rupture and septal rupture?
Echocardiogram
What is a temporary device that can be placed when there is an acute pump failure from an anatomic problem? It serves as a bridge to surgery for valve replacement or transplant for 24 to 48 hours.
Intraaortic balloon pump (IABP)
When a patient presents with either an inferior or anterior infarction, it is common for a second event to infarct a second geographic area of the heart. What are the things you need to look for?
- Recurrence of pain
- New rales on PE
- Elevated CK-MB
- Sudden onset of Pulmonary Edema
How do you treat a mural thrombi?
Treat with Heparin followed by Warfarin
What complication of Acute MI present with new onset of a murmur and increase oxygen saturation on entering the right ventricle?
Septal rupture
What complication of Acute MI present with Inferior Wall MI in history, clear lungs, tachycardia, hypotension with nitroglycerin?
Right Ventricle Infarction
What complication of Acute MI present with sudden loss of pulse and jugulovenous distention?
Tamponade/Wall Rupture
What complication of Acute MI present with loss of pulse that would need an EKG to diagnose?
Ventricular Fibrillation
What do you need to do to a patient diagnosed with Acute MI prior to discharge?
Stress Test
It determines if angiography is needed. Angiography determines the need for revascularization such as angioplasty or bypass surgery.
DO NOT do a stress test if the patient remains symptomatic
What are the routine medications you should discharge your patients with?
- Aspirin
- Beta blockers (Metoprolol)
- Statins
- ACE inhibitors
What medication is NEVER the right choice for coronary artery disease?
Dipyridamole
A 48-year old woman comes to the office with chest pain that has been occurring over the last several weeks. The pain is not reliably related to exertion. She is comfortable now. The location of the pain is retrosternal. The pain is associated with nausea. There is no shortness of breath and the pain does not radiate beyond the chest. She has no past medical history. What is the most likely diagnosis?
A. GERD B. Unstable Angina C. Pericarditis D. Pneumothorax E. Prinzmental Angina
A. GERD
What are the risk factors of Coronary Artery Disease?
Diabetes Mellitus (WORST risk factor) Tobacco smoking Hypertension (MOST COMMON) Hyperlipidemia Family history of premature coronary artery disease Age: >45 men >55 women
Which of the following is the most dangerous to a patient in terms of risk for CAD?
A. Elevated triglycerides
B. Elevated total cholesterol
C. Decreased high density lipoprotein (HDL)
D. Elevated low density lipoprotein (LDL)
E. Obesity
D. Marked elevation in LDL - most dangerous portion of a lipid profile for a patient
A postmenopausal woman develops chest pain immediately on hearing the news of her son’s death in a war. She develops acute chest pain, dyspnea, and ST segment elevation in leads V2 to V4 on electrocardiogram. Elevated levels of troponin confirm an acute myocardial infarction. Coronary angiography is normal including an absence of vasospasm on provocative testing. Echocardiography reveals apical left ventricular “ballooning.”
What is the presumed mechanism of this disorder?
A. Absence of estrogen B. Massive catecholamine discharge C. Plaque rupture D. Platelet activation E. Emboli to the coronary arteries
B. Massive Catecholamine Discharge
Disease: Tako-Tsubo Cardiomyopathy
Correcting which of the following risk factors for CAD will result in the most immediate benefit for the patient?
A. Diabetes Mellitus B. Tobacco Smoking C. Hypertension D. Hyperlipidemia E. Weight loss
B. Smoking cessation results in the greatest immediate improvement in patient outcomes for CAD
What are the features of chest pain that tell that it is NOT ISCHEMIC in nature?
Changes with:
Respiration (Pleuritic)
Position of the body
Touch of the chest wall
Remember: PPT
Pleuritic, Positional, Tender
What is the difference in duration of stable angina from ACS?
Stable angina: >2 to <10 min
ACS: >10 to 30 min
What are the provoking factors of Ischemic Pain?
Physical activity, cold, emotional stress
What are the usual quality of Ischemic Pain?
Squeezing, tightness, heaviness, pressure, burning, aching
NOT sharp, pins, stabbing, knifelike
Where does ischemic pain usually radiates?
Neck, lower jaw and teeth, arms, shoulders
What is the diagnosis and most accurate test if the case describes chest pain with Chest Wall Tenderness?
Costochondritis
Physical Exam
What is the diagnosis and most accurate test if the case describes chest pain with Radiation to back and unequal blood pressure between arms?
Aortic Dissection
Chest X-Ray with widened mediastinum, Chest CT, MRI, or TEE
What is the diagnosis and most accurate test if the case describes chest pain with pain worse with lying flat, better when sitting up, young (<40)?
Pericarditis
Electrocardiogram with ST elevation everywhere, PR depression
What is the diagnosis and most accurate test if the case describes chest pain with epigastric discomfort and pain better when eating?
Duodenal ulcer
Endoscopy
What is the diagnosis and most accurate test if the case describes chest pain with bad taste, cough, hosarseness?
GERD
Response to PPIs; aluminum hydroxide and magnesium hydroxide, viscous lidocaine
What is the diagnosis and most accurate test if the case describes chest pain with cough, sputum, hemoptysis?
Pneumonia
Chest X-Ray
What is the diagnosis and most accurate test if the case describes chest pain with sudden onset shortness of breath, tachycardia, hypoxia?
Pulmonary embolus
Spirat CT, V/Q Scan
What is the diagnosis and most accurate test if the case describes chest pain with sharp, pleuritic pain, tracheal deviation?
Pneumothoroax
Chest X-Ray
What is the best initial test for all forms of chest pain?
Electrocardiogram (ECG)
What is the indispensable tool to evaluate chest pain when the etiology is not clear and the EKG is not diagnostic.
Stress (Exercise Tolerance) Testing
2 Factors to consider:
- You can read the EKG
- The patient can exercise
What is the formula to determine maximum heart rate?
220 - age of patient
What are the two best methods of detecting ischemia without the use of EKG?
1) Nuclear isotope uptake: thallium or sestamibi
2) Echocardiographic detection of wall motion abnormalities
Give reasons for baseline EKG abnormalities
- Left bundle branch block
- Left ventricular hypertrophy
- Pacemaker use
- Effect of Digoxin
What is the difference of Ischemia versus Infarction?
Ischemia gives reversible wall motion or thallium uptake between rest and exercise
Infarction is irreversible or “fixed”
What if the patient cannot exercise/ cant do stress testing? What alternate method can you do?
Increase Myocardial Oxygen Consumption by
1) Persantine (Dipyridamole) or Adenosine in combination with the use of nuclear isotopes such as thallium or sestamibi
2) Dobutamine in combination with Echocardiography
A man with atypical chest pain is found to have normal nuclear isotope uptake in his myocardium at rest. On exercise, there is decreased uptake in the inferior wall. Two hours after exercise, the uptake of nuclear isotope returns to normal.
What is the right thing to do?
A. Coronary angiography B. Bypass Surgery C. Percutaneous coronary intervention (e.g angioplasty) D. Dobutamine echocardiography E. Nothing, it is an artifact
A. Coronary Angiography
The patient has reversible ischemia on stress test
A 48-year old woman comes to the office with chest pain that has been occurring over the last several weeks. The pain is not related to exertion. She is comfortable now. The location of the pain is retrosternal. She has no hypertension, and the EKG is normal.
What is the most appropriate next step in management?
A. CK-MB B. Troponin C. Echocardiogram D. Exercise tolerance testing E. Angiography F. CT Angiography G. Cardiac MRI H. Holter Monitor
D. Exercise tolerance testing is to evaluate stable patients with chest pain whose diagnoses are not clear
Give 3 treatment for chronic angina that can lower mortality
- Aspirin
- Beta-blockers
- Nitroglycerin
What should a patient with acute coronary syndromes (ACS) receive immediately upon arrival in the ER?
Asprin and either Clopidogrel, Prasugrel, Ticagrelor
*This does not apply to chronic or stable CAD
Give 3 uses for Clopidogrel
- Combination with Aspirin in all ACS
- Aspirin intolerance such as allergy
- Recent angioplasty with stenting
What is the adverse effect of Prasugrel?
dangerous in 75 and older patients because of an increased risk of HEMORRHAGIC STROKE
Give the indication, contraindication, mode of action, and side effects of Ticlopidine
I: For Aspirin and Clopidogrel Intolerance
CI: If reason for aspirin/clopidogrel intolerance is BLEEDING
MOA: Inhibit platelets
SE: Neutropenia, TTP
A 64-year-old man is placed on lisinopril as part of managing CAD in association with an ejection fraction of 24% and symptoms of breathlessness. Although he sometimes has rales on lung examination, the patient is asymptomatic today. Physcial examination reveals minimal edema of the lower extremities. Blood tests reveal an elevated level of potassium that is present on a repeat measurement. EKG is unchanged.
How would you best manage the patient?
A. Add kayexalat B. Insulin and Glucose C. Stop lisinopril D. Switch lisinopril to Candesartan E. Switch lisinopril to hydralazine and nitrates
E.
ACEIs may also cause hyperkalemia aside from cough
Hydralazine
- direct-acting arterial vasodilator
- will decrease afterload and has been shown to have a clear mortality benefit in patients with systolic dysfunction
- should be used in association with nitrates to dilate the coronary arteries
What is the goal of LDL in the use of statins for CAD patients?
LDL < 70
Which of the following is the most common adverse effect of statin medications?
A. Rhabdomyolysis B. Liver dysfunction C. Renal failure D. Encephalopathy E. Hyperkalemia
B.
AST and ALT should be part of routine monitoring
check CPK levels if with symptoms
What is an excellent drug to add to statins if full lipid control is not achieved by statins?
Niacin
These are fibric acid derivatives that lower triglyceride levels more than statins.
What is the side effect of this drug if used together with statins?
Gemfibrozil
S.E: Myositis
What are the clear indications for the use of statins?
Acute Coronary Syndrome
MI or Stenting
Any arterial disease
10-year risk of CAD >7.5%
What is the adverse effect of Cholestyramine?
Flatus and abdominal cramping
Do we give Calcium Channel Blockers to patients with CAD?
When do we use CCB in CAD?
What are the adverse effects of CCBS?
NO! It increase mortality.
Use only with:
Severe asthma
Prinzmetal variant angina
Cocaine-induced chest pain
Adverse Effect:
Edema
Constipation (Verapamil)
Heart block (rare)
This is a sodium channel-blocking medication that treats angina. It is added to those who still have pain despite aspirin, beta blockers, nitrates, and calcium blockers
Ranolazine
Give 4 indications for Coronary Artery Bypass Grafting (CABG)?
- 3 vessels with at least 70% stenosis in each vessel
- Left main coronary artery occlusion
- 2-vessel disease in a patient with diabetes
- Persistent symptoms despite maximal medical therapy
What is the best therapy in acute coronary syndromes, particularly those with ST segment elevation?
Percutaneous Coronary Intervention (PCI)
A 70-year-old woman comes to the emergency department with crushing substernal chest pain for the last hour. The pain radiates to her left arm and is associated with anxiety, diaphoresis, and nausea. She describes the pain as “sore” and “dull” and clenches her fist in front of her chest. She has a history of hypertension.
Which of the following is most likely to be found in this patient?
a. >10 mm Hg decrease in BP on inhalation
b. Inc. in JVP on inhalation
c. triphasic scratchy sound on auscultation
d. continuous “machinery” murmur
e. S4 gallop
f. Point of maximal impulse displaced toward axilla
E. S4 gallop associated with Acute Coronary Syndromes
What sign is an increase in jugulovenous pressure on inhalation?
Give 2 diseases that is associated with this sign.
Kussmaul sign
Constrictive Pericarditis
Restrictive Cardiomyopathy
A 70-year-old woman comes to the emergency department with crushing substernal chest pain for the last hour. Which of the following EKG findings would be associated with the worst prognosis?
a. ST elevation in leads II, III, avF
b. PR interval >200 milliseconds
c. ST elevation in leads V2-V4
d. Frequent premature ventricular complexes (PVCs)
e. ST depression in leads V1 & V2
f. Right bundle branch block (RBBB)
C.
Leads V2-V4: anterior wall of the left ventricle
Leads II, III, aVf: inferior wall
A 70-year-old woman comes to the emergency department with cushing substernal chest pain for the last hour. An EKG shows ST segment elevation in V2 to V4, What is the most appropriate next step in the management of this patient?
a. CKCK-MB level
b. Oxygen
c. Nitroglycerin sublingual
d. Aspirin
e. Thrombolytics
D.
Aspirin lowers mortality with acute coronary syndromes, and it is critical to administer it as rapidly as possible.
Do we treat PVCs and APCs (atrial premature complexes)? Why?
PVCs and APCs should not be treated, even when associated with an acute infarction. Treatment only worsens outcome.
What happens when you combine nitrates with sildenafil?
Hypotension. They are both vasodilators.
What is the essential feature of congestive heart failure?
Shortness of breath (dyspnea)
Differentiate systolic dysfunction and diastolic dysfunction in CHF.
Systolic dysfunction is a low ejection fraction (less blood pumped) and dilation of the heart
Diastolic dysfunction is the inability of the heart to “relax” and receive blood. Ejection fraction is PRESERVED and sometimes above normal.
What is the most common cause of CHF?
Hypertension
Enumerate the events leading to CHF.
Infarction -> Dilation -> Regurgitation -> CHF
In addition to dyspnea on exertion, what other things should you look for in CHF?
Orthopnea Peripheral edema Rales JVD Paroxysmal nocturnal dyspnea (PND) (sudden worsening at night, during sleep) S3 gallop rhythm
What is the MOST LIKELY diagnosis for dyspnea if the case mentions… sudden onset, clear lungs
Pulmonary embolus
What is the MOST LIKELY diagnosis for dyspnea if the case mentions… sudden onset, wheezing, increased expiratory phase
Asthma
What is the MOST LIKELY diagnosis for dyspnea if the case mentions… slower, fever, sputum, unilateral rales/rhonchi
Pneumonia