Heart 3 B

Question 1

T wave
Onset and end
Direction
Duration
Amplitude 
Shape
T wave- qrs complex relationship

Answer 1

First abrupt or gradual deviation from the at segment. If the st segment is absent the t wave begins at the end of the qrs complex. The point where the t wave returns to the baseline marks the end of the t wave
Upright in lead 11 it is almost always in the same direction as the qrs complex
.10-.25 seconds or greater
Normally less than 5 mm. Normal t wave is never more then 2-thirds the height of the r wave
Sharply or bluntly rounded and asymmetrical
1:1 should always follow the qrs complex

Question 2

St segment
Onset and end
Duration amplitude
Appearance

Answer 2

Begins with the end of qrs complex and ends with the onset of the wave
.20 seonds or less. When the heart rate is fast the st segment is shorter
Normally the segment is flat. Slightly elevation or depression. Initially is considered normal
If elevated the st segment may be flat, concave, or arched. If depressed the st segment may be flat, unslopping or down slopping

Question 3

Abnormal st segment

Answer 3

Both st segment elevation and st segment depression are abnormal

Question 4

Systematic ecg 1-4 to ecg analysis

Answer 4

Determine regularity
Determine heart rate
Identify and analyse the p wave
Determine pr interval and av conduction ratio

Question 5

Identify and analyse the p wave

Answer 5

Check rate of the p wave
Determine rate and regulatory
Compare atrial rate and ventricular rate

Question 6

Systematic approach to ecg analysis

Answer 6

Identify and analyse the qrs complexes
Determine the site of the dysrhythmia
Identify the dysrhythmia
Evaluate the clinical significance of dysrhythmia

Question 7

Identity and analyse the wrs complexes

Answer 7

Identify qrs complexes
Note duration and shape of the qrs complex
Assess equality of the qrs complexes
Determine if a p wave precedes each qrs complex

Question 8

Method calculating heart rate method 1

Answer 8

Count number of qrs in between each r-r interval in a 6 second strip x 10 = hr/minute

Question 9

Calculating heart rate method 2

Answer 9

Count the number of small squares between one r-r interval

Divide this number into 1500

Question 10

Calculating heart rate method

Answer 10

Count the number of large square between one r-r interval and divide this number into 300= hr/minute