So long ago (A&P)
The 'Pointy' bit of the heart
The Apex
Regular, Rate less than 60, P Waves: uniform, normal; one for every QRS. QRS is less than 0.12 second, PR Interval: 0.12-0.20 second
Sinus Bradycardia
What rhythm produces progressively lengthening PR Intervals until a dropped QRS complex, then the cycle repeats?
Second Degree Type I (Mobitz 1, Wenkeback)
Depolarision toward a positive electrode produces a _____ deflection on the ECG (lead II)
POSITIVE
Term used to describe myocyctes which spontaneously depolarise and start an action potential
Automaticity
Name the three fasicles
Anterior, Posterior and RV fasicle
Irregularly Irregular. Rate varies with conduction: Less than 100 if controlled, greater than 100 if uncontrolled. No P waves, chaotic baseline, QRS is less than 0.12 second, PR Interval not discernable, R wave height variable,
Atrial Fibrillation (A Fib)
What rhythm is characterized by a prolonged delay in conduction at the AV node, recognized by a consistent PR Interval greater than 0.20 seconds.
First Degree AV Block
Repolarisation away from a positive electrode produces a _______ deflection
POSITIVE
Another name for the Sodium Potassium Pump
3 x roles of 'Healthy Endothelium'
Anti-Platelet, Anti-coagulant, Vasomotor Tone
Regular rhythm, rate varies, QRS complexes similar 0.12-0.20 second, PR Interval consistent, No pulse
Pulseless Electrical Activity (PEA)
If the QRS complex is predominately positive and the T wave is predominately negative, the T wave is said to be _________ .
Discordant
A _____wave have a positive and a negative deflection
BIPHASIC
When the potential difference between the inside and outside moves toward zero the cell is _____ and when its returning back to its resting value its said to be_______.
Depolarising and Repolarising
Name of part of cycle-skeleton which acts as the electrical insulator at the A-V junction
Annulus Fibrosis
Irregular, rate not measurable, P Wave not discernable, QRS complex chaotic/not discernable, PR Interval not discernable
Ventricular Fibrillation
Enlarged Right Atrim will produce what changes to ECG?
Heightened P waves (>2.5)
AVL
Name an example of a calcium channel blocker
What does the QT interval represent?
This encompasses the time from the beginning of ventricular depolarization to the end of ventricular repolarization.
Regular or irregular, Rate greater than 200 bpm, P wave not discernable, QRS complex > 0.12 second; variable in shape and high; twisting, PR Interval not discernable
Polymorphic VT (ie. Torsades de Pointes)
or Multifocal V Tach
What is the genetic bundle known as regarding Wolf Parkinson White syndrome
Bundle of Kent
Which leads are reffered to as the 'high-lateral' leads?
Leads I and AVL
Adrenaline can be described as a ________ chronotropic and ________ ionotropic agent.
Positive and Positive