Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
45 Cards in this Set
- Front
- Back
|
What is a normal heart rate?
|
60 - 100 bpm
|
|
|
What is the thick line sequence for determining heart rate?
|
300, 150, 100, 75, 60, 50
|
|
|
Which lead is the rhythm strip normally based off of?
|
Lead II
|
|
|
What are the 3 irregularly irregular patterns?
|
Atrial fibrillation
WAP (wandering atrial pacemaker) MAT (multifocal atrial tachycardia) |
|
|
What is the key to diagnosing WAP?
|
3 different p-waves
|
|
|
In addition to lead II rhythm strips may be done using what lead?
|
V5
|
|
|
If the number of p-waves > number of qrs complexes what does that indicate?
|
heart block of some sort
|
|
|
MAT and WAP may be indicators of what disease process?
|
COPD
|
|
|
How will the QRS complex change if the impulse is conducted cell to cell instead of via the conduction pathway?
|
Wider QRS complexes (e.g. PVCs, V-tach and BBB)
|
|
|
Which interval will be shortened if a patient has premature atrial contractions?
|
P-P interval
|
|
|
How can you distinguish V-tach from PSVT?
|
PSVT has narrow QRS complexes, while V-tach has wider QRS complexes
|
|
|
In which ventricular rhythm abnormality is there a compensatory pause?
|
PVCs
|
|
|
In a patient with hypoxia or hypokalemia you may see a PVC fall on what wave?
|
T-wave
|
|
|
What is Joseph's sign?
|
notching of the S-wave
|
|
|
If the PR interval is greater than .2 what is the abnormality called?
|
1st degree heart block
|
|
|
What abnormality is characterized by progressively lengthening PR intervals followed by a dropped beat?
|
Mobitz type I (2nd degree heart block)
|
|
|
What abnormality is characterized by a group of regular beats followed by one dropped beat?
|
Mobitz type II (2nd degree heart block)
|
|
|
Heart rate > 160 with narrow QRS what is your Dx?
|
PSVT
|
|
|
What is the most common irregularly irregular heart rhythm?
|
Atrial fib
|
|
|
If the ventricular rate is 150 and regular what would your most likely Dx be?
|
Atrial flutter
|
|
|
If the heart rate is > 100 bpm and the QRS complexes are wide what would your most likely Dx be?
|
V-tach
|
|
|
What supplies blood the the SA node?
|
Right coronary (60%)
Left Circumflex (40%) |
|
|
What are connexins?
|
Proteins that maintain the unidirection current flow in the heart
|
|
|
What supplies the AV node with blood?
|
RCA (85%)
|
|
|
What channel predominates in pacemaker cells?
|
Ca++ channel
|
|
|
Where is the AV node located?
|
Wall of the right atrium endocardium, anterior to R coronary sinus, above septal leaflet of tricuspid valve: triangle of kotch
|
|
|
During which phase is there a plateau?
|
phase 2, for muscle contraction
|
|
|
Inferior wall infarcts may produce a parasympathetic discharge leading to what arrythmia on an EKG?
|
bradycardia
|
|
|
pacemaker rate of atrial cells?
|
55-60
|
|
|
pacemaker rate of av node?
|
45-55
|
|
|
pacemaker rate of bundles?
|
40-45
|
|
|
pacemaker rate of purkinje fibers?
|
35-40
|
|
|
pacemaker rate of myocardial cells?
|
30-35
|
|
|
Parasympathetic supply affects which parts of the heart?
|
atria, SA, AV nodes
|
|
|
Prolonged QT interval with P on U wave phenomenon indicative of?
|
hypokalemia
|
|
|
An EKG is normally set to record impulses traveling away from a lead as?
|
negative
|
|
|
Which EKG lead when placed properly is on the mid-clavicular line?
|
V4
|
|
|
Which EKG lead when placed correctly is on the anterior axillary line?
|
V5
|
|
|
Which EKG lead when place in the proper position is on the mid axillary line?
|
V6
|
|
|
The hexaxial system splits the heart into a _____ half and _____ half?
|
Front half & back half
|
|
|
The precordial lead system splits the heart into a ____ half and ___ half?
|
Bottom half & Top half
|
|
|
Which EKG leads monitor the septal wall of the heart?
|
V1 & V2
|
|
|
Which EKG leads monitor the anterior wall of the heart?
|
V3 & V4
|
|
|
Which leads monitor the inferior wall of the heart?
|
Leads I, II, & III
|
|
|
Which leads monitor the lateral wall of the heart?
|
V5 & V6
|
