Normal QRS duration

What is the range of normal EF

During ETT, a drop of BP greater than *** is considered an absolute indication to terminate the test

The centre of the heart has how much potential?

The Beginning of P wave to beginning of QRS complex

first downward deflection

first upward deflection

First downward deflection after first upward deflection

Subsequent upward

Start of Q wave to the end of the T wave

How long should a normal p wave be?

Brings next beat back into sync with preceding ones?

Succeeding beats that do not fall back in sync?

P- pulmonale normally found in which leads?

What is the main artery in the arterial system

What is the rate of the AV junction?

Effect and change the HR

(+ Increase HR) (- Decreases HR)

Change and effect the treats contractions

(+ Strengthens contractility) (- Weakens contractility)

Effects the rate of conduction through the AV node

(+ increases rate of conduction) (- decreases rate of conduction)

Disease of the heart muscle that causes the heart to become enlarged and to pump less strongly

Heart muscle hardens, restricting the expansion of the heart, thus limiting the amount of blood it can pump to the rest of the body

Heart muscle becomes enlarged and blocks blood flow

True or False Digoxin is commonly used to increase contractility?

True or False Beta-Blockers decrease both heart rate and contractility?

True or False nitroglycerin may cause severe hypotension in patients that have CAD

True or False a cool down walk after exercise may accelerate the onset of ST depression

True or False Heart block means the heart chamber is blocked by a big clot

True or False the diagnosis of acute MI is based primarily on the ECG

True or False the more perpendicular phase 0 of the action potential curve, the greater the velocity an impulse will be conducted

What classification of antiarrhymic drugs has the primary effect of slowing the AV conduction

True or False VT may be due to enhanced automaticity, reentry, or a combination of both

Will vagal maneuvers be effective in WPW

Will WPW respond to cardioversion

True or False QRS duration of a normal newborn is less than adults

True or False T waves in V1 are upright throughout childhood as well as adulthood

True or False amplitude of the R wave in V1 in usually greater then the S wave in V1 in an infant of less than 1 month

True or False at birth, the RV is thicker and more dominant than the LV

True or False newborns with pulmonary atresia are almost completely dependent on a PDA for pulmonary blood flow

True or False by the time a child is 3-8 years, the precordial leads will assume an adult QRS pattern

True or False a HR of 130 bpm for a newborn is considered tachycardia

True or False an episodes of sinus tachy and brady lasting longer than 15 seconds is abnormal