Normally, this area of the heart has the highest degree of automaticity:
What is the Sinoatrial node
this parameter is best used to assess left ventricular afterload?
What is Systemic Vascular Resistance
Hypoxia
Pulmonary embolism
Tamponade
Acidosis
What do these have in common?
What are reversible causes of PEA (Hs and Ts)
the normal range for cardiac output?
4 to 8 L/min
In a 12 lead ECG, V1 through V6 are referred to as:
what are precordial leads
Atrial depolarization is represented by what wave?
The pulmonary artery catheter balloon is used to “float” the tip of the catheter into the correct position in the pulmonary artery, if it should stay inflated for the entire time it is in place in the pulmonary artery it would be similar to what adverse condition?
What is a Pulmonary Embolism
the AV node

what is G
The myocardial tissue's ability of cells to respond to electrical, chemical, or mechanical stimulation and is not unique to heart muscle is referred to as:
what is excitability
If every P wave is followed by a QRS complex, every QRS complex is preceded by a P wave, the rate regular and is between 60 and 100 beats/min
what is normal sinus rhythm
What is the maximum duration of a normal PR interval?
what is 0.2 seconds
What is the normal mean pulmonary artery pressure?
what is 10 to 20 mmHg
Determining the mean _________________ can help detect right or left ventricular hypertrophy.
what is axis
The unique ability of the cardiac muscle to initiate a spontaneous electrical impulse is a property called:
automaticity
During impulse conduction, to allow time for ventricular filling of blood, the impulse is held for a moment/slowed down at what location?
what is the AV node
Consistent shape
3 small boxes long or less
No more than 2.5 mm high
Upright in lead II
What are characteristics of a normal P wave?
The SA node stimulates the part of the heart that provides the “kick” that pushes blood TO the ______________.
what is the ventricles
Erratic quivering of the muscle mass of the largest chambers of the heart.
ventricular fibrillation
On an ECG strip, ventricular depolarization is represented by ________________?
What is QRS complex
why are QRS complexes normally larger than P waves
because the muscle mass of ventricles is much greater than that of the atria.
Normally, the ____________ has greatest degree of automaticity and paces the heart –referred to as "The Pacemaker of the Heart"
Sinoatrial node
The arrhythmia that includes a progressively lengthening PR interval, eventually drops a QRS complex, then repeats the pattern, is called ____________?
second degree type I (Wenckebach)
Letter B

PR interval
The T wave represents:
what is Ventricular repolarization
Stroke volume x heart rate
what is cardiac output