Example questions Flashcards
Frank Starling law of the heart asserts that the force of caridiac contraction is….
proportional to the ventricular preload
What is the normal resting ventricular ejection fraction?
approx. 60%
What is normallly associated with decreased contractility?
negative inotropic effect
What is not a clinical indicator of ventricular afterload?
End Diastolic Pressure
What is Normal RAP?
(Right Atrial Pressure)
0 mmHg
When will venous blood flow increase?
presence of arterial vasodilation
Blood pressure is regulated by ___________ and ________ baroreceptors.
carotid and aortic
What is ventricular preload is equal to?
Ventriculat end diastolic pressure
Administering which drug can decrease digoxin toxicity associated with hypokalemia?
Captopril
What will Digoxin is administered to a pt. with HF induce?
increased myocardial contractility
How long should pacemaker batteries last?
5 - 10 years depending on usage
A pt. has developed a. fib. (150BPM), What should be assessed next ?
BP, make sure pt. is stable
A pt. with an MI experiences new multiform PVCs. The pt. is allergic to lidocaine, what is the next drug of choice?
Procainimide or Amiodarone
What is the primary reason for administering morphine to an MI pt?
decrease O2 demand on the heart
Should be used with caution for patient with an MI of RCA
What is the first intervention for pt. experiencing MI?
O2
True or False
The diagnosis of acute MI is based primarily on the ECG
False, Troponins
What is the normal pulmonary capillary wedge pressure?
approx. 8-12 mmHg
True or False
The more perpendicular phase 0 is of the action potential curve, the greater the velocity an impulse will be conducted.
True
Where does preductus coarctation of the aorta causes decrease blood pressure?*
Lower extremities
What may account for low voltages in the limb leads?*
COPD
What is commonly associated with aortic stenosis? (5 possible answers)*
- Mitral regurgitation
- LVH
- LAE
- CHF
- sudden cardiac death
When doing an exercise test on someone with short legs modified bruce should be considered. Why?
steps are much shorter and speed does not increase rapidly
What is the insertion of a balloon-tipped catheter into an occluded artery to open the lumen called?
Percutaneous Transluminal Coronary Angioplasty
PTCA
What is the term for generalized edema over the entire body is called?
Anasarca
List 4 possible causes for torsades.
- Hypokalemia
- long QT
- accessory bypass tract
- quinidine
Which artery is normally used to introduce a catheter?*
Femoral or radial
A pencil sound beam used to measure the pressure gradient of the valves refers to what method of echo?
pulsed and continuous wave
What is the best tx. for torsades resulting from bradycardia induced long QT syndrome?
ICD
An 80 y/o F c CAD and normal ECG is referred for GXT. She is unable to walk due to physical limitations. What are her best options for tests?
- MIBI
- dobutamine GXT
- echo
What classification of antiarrhymics has the primary effect of slowing the AV conduction?
Class IV Calcium channel blockers
What is a common serious side effect of amiodarone therapy?
pulmonary toxicity
What would be the most effective tx. of a pt. with nocturnal angina?
add ß blocker in addition to Nitrate therapy
The speed and grade of Bruce proticol in stage 1 is the same as modified Bruce in stage ___.
3
Two weeks post implantation of a pacemaker, loss of capture is associated with what?
Increase in stimulation threshold
What monitor is most appropriate for pacemaker pts. who are unable to attend follow up to check battery?
trans - telephonic
What condition believed to be caused by excess vagal tone, may be suspected when a pt suffers syncopal spells upon tightening a collar or turning the head?
Hypersensitive carotid sinus syndrome
S1 is represented by what?*
closing of mitral and tricuspid valves
In DDDR pacemaker, what does the “R” represents?
Rate responsive pacing
When the pacing lead is at the apex of the right ventricle, the paced QRS will resemble what?
LBBB with Left Axis Deciation
What pacemaker mode would be best for a pt. who has SSS, chronotropic incompetence and an intact AV conduction system?
AAIR
Define: voltage
amount of pressure in an electrical loop measured in volts
What is Einthoven’s law?
Sum of amplitude of recorded complexes in lead I and lead III = amplitude of lead II
What does AV stand for in relationship to the unipolar limb leads?
Augmented voltage
Where is zero potential located in the chest?
center of the heart
How would you record the third dimension of the heart ?
Chest leads
What is the small bump felt where the manubrium meets the sterna body?
Sterna Angle
What is the invasive procedure using a unipolar lead to identify atrial activity?
Esophageal lead
What is the initial emergency management of the victim who has lost consciousness?
CPR
What is used to diagnoseand correct SVT caused by re entry?
Vagal maneuvers or carotid massage
What are some of the conditions associated with tamponade ?
- trauma
- infections
- neoplastic dx
- cardiac surgery
- post CPR
- perforation by cath
What is the purpose of the right leg electrode?
serves as a ground to keep average voltage of the pt. the same as the recording instrument
Why is a 15 lead ECG done?
Posterior or RV MI
What are the two benefits of the AV node?
- protect the ventricles by limiting the number of impulses
- delays all impulses to allow for atrial contraction
What part of the action potential curve represents cell activation or depolarization?
Phase 0
Which cell typically has the steepest rise of phase 4?
sinus node
Which cell has the longest refractory ?
Purkinje
What conditions may cause enhanced automaticity?
- hypokalemia
- hypocalcemia
- dig toxicity
- fever
- hypercapnea
- trauma
- MI
- sympathetic stimulus
WPW occurs down what additional pathway?
Bundle of Kent
Will WPW respond to cardioversion?
Yes
What is the Normal HR for 2-3 month olds?
95-180 bpm
What is the most common congenital heart disease?
VSD
What is the most common cyanotic congenital heart defect beyond infancy?
Tetralogy of Fallot
What are 3 cardiac defects that obstruct LV or RV outflow?
- Aortic stenosis
- pulmonic stenosis
- coarctation of the aorta
What is the common serious side effect of amiodarone?
pulmonary toxicity
What drug will temporarily increase heart rate?
- atropine
- isoproterenol
What is the reciprocal lead?
Anterior
Inferior
What is the reciprocal lead?
Inferior
High Lateral
What is the reciprocal lead?
Lateral
Septal
Posterior
Septal
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Septal / Anterior
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Lateral
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Inferior
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Left Anterior Decending
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Left Circumflex
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Right Coronary artery