Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

cardio week 2 > physio > Flashcards

physio Flashcards

1
Q

chronotropy

A

affecting HR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

dromotropy

A

affects conduction velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

inotropy

A

contractility

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

parallel depolarization wave moving towards the positive electrode…

A

will yield the greatest positive deflection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

perpendicular depolarization wave (or a non-moving wave) to the lead

A

no deflection on the EKG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

einthoven triangle

A

equilateral triangle formed by limb leads I, II, and III

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

central wilson terminal

A

electrical imaginary center of the heart. forms the star diagram. leads I, II, and III are moved so that they cross through this center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

precordial leads

A

V1-V6
all use the central wilson terminal as the - electrode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what part of the EKG correlates with heart rate?

A

QT interval
depolarization and depolarization of ventricles
varies with HR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

one large box equals

A

0.2 s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

one small box equals

A

0.04 s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

rate estimation method

A

300/# large boxes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

PR interval less than 1 big box
QRS complex less than 3 small boxes

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

MEA (mean electrical axis)
AKA Average QRS vector

A

vector over the entire process of ventricular depolarization

normal: -30 to +105

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

the more tissue the depolarization has to travel through (i.e. thicker myocardial layers), the larger the vector size

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what leads to larger and smaller than normal vectors?

A

larger: hypertrophy
smaller: damaged tissue

17
Q

in the case of a bundle block, the MEA…

A

deviates TOWARD the blocked side

18
Q

left axis deviation (LAD)

A

LV hypertrophy (larger L vector)
RV damaged/loss of tissue (smaller R vector)
LBBB

19
Q

right axis deviation (RAD)

A

RV hypertrophy (larger R vector)
LV damaged/loss of tissue (smaller L vector)
RBBB

20
Q

MEA rules

A

find isoelectric lead. lead that is perpendicular to it is the vector.

20
Q

MEA rules

A

find isoelectric lead. lead that is perpendicular to it is the vector.

21
Q

LAD common in…

A

increasing age and obesity
LV hypertrophy, inferior wall MI, and emphysema

22
Q

RAD common in…

A

children and young adults
RV hypertrophy, lateral MI, altered conduction pathways

cardio week 2 (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions