sinus rhythm rules

Question 0

Sinus bradycardia

Answer 0

Rate:the atrial and ventricular rates are equal; the heart rate is less then 60 BPM
Rhythm:the R-R intervals are constant; the rhythm is regular
P wave:the p waves are uniform. There is one P wave in front of every QRS complex.
PRI:0.12-0.20 seconds and constant
QRS:less than 0.12 seconds
S-T segment:neither elevated or depressed
T waves:usually slightly rounded and asymmetrical ; T wave is less than the height of the QRS.

Question 1

Normal sinus rhythm

Answer 1

Rate: The atrial and ventricular rates are equal;the heart rate is usually 60-100 BPM
Rhythm: The R-R intervals are constant; the rhythm is regular
P wave: The P waves are uniform. There is only one P wave in front of every QRS complex
PRI:0.12-0.20 seconds and constant
QRS:less then 0.12 seconds
S-T segment: neither elevated or depressed
T waves:usually slightly rounded and asymmetrical; T wave is less than half the height of the QRS

Question 2

Sinus tach

Answer 2

Rate:the atrial and ventricular rates are equal; the heart rate is usually between 100-160 BPM
Rhythm: the R-R intervals are constant; the rhythm is regular
P wave:the P waves are uniform. There is one P wave in front of every QRS
PRI:0.12-0.20 seconds and constant
QRS:less than 0.12 seconds
S-T segment:neither elevated or depressed
T waves:usually slightly rounded and asymmetrical; T wave is less than half the height of the QRS

Question 3

Sinus Arrthymia

Answer 3

Rate: the atrial and ventricular rates are equal, the heart rate is usually 100 to 160 BPM
Rhythm:the R-R intervals vary; the rhythm is slightly irregular.
P wave:the P waves are uniform. There is one P wave in front of every QRS complex
PRI:0.12-0.20 seconds and constant.
QRS:less than 0.12 seconds
S-T segment:neither elevated or depressed
T waves:usually slightly rounded and asymmetrical ; T wave is less than half the height of the QRS.

Question 4

In a sinus rhythm, atrial and ventricular rates are what? And give the rates for all four sinus rhythms.

Answer 4

Atrial and ventricular rates are equal.
Normal sinus rhythm=60-100
Sinus bradycardia=less then 60
Sinus tachycardia= 100-160
Sinus arrhythmia= 60-100, can be slower

Question 5

What three sinus rhythms have constant R-R intervals, and a regular rhythm?

Answer 5

Normal sinus
Sinus bradycardia
Sinus tachycardia

Question 6

Which sinus rhythm has R-R intervals that vary, and a slightly irregular rhythm?

Answer 6

Sinus arrhythmia

Question 7

P wave rules for all sinus rhythms

Answer 7

P waves are uniform and there is one P wave in front of every QRS complex

Question 8

PRI for all sinus rhythms

Answer 8

0.12-0.20 seconds and constant
Or 120 milliseconds to 200 milliseconds
Or 3 small boxes to 1 big box

Question 9

QRS rules for sinus rhythms

Answer 9

Less than 0.12 seconds
Or less than 120 milliseconds
Or less than 3 small boxes

Question 10

S-T segment rules for sinus rhythms

Answer 10

Neither elevated or depressed

Question 11

T wave rules for sinus rhythms

Answer 11

Usually slightly rounded and asymmetrical; T wave is less than half the height of the QRS