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User Manual for PC-80D Easy ECG Monitor

Appendix3 General Knowledge of ECG

Ⅰ

Normal sinus rhythm: In sinus conditions, SA node paces the heart with the regularly rate and the normal rhythm. The heart rate is in the range of

60 to 100 times per minute and the rhythm is regular. P wave is normal and each one is

followed by a QRS wave. P-R interval: 0.12~0.20s; QRS wave: 0.06~0.10s; No ectopic

ECG activity.

Symptom: Sinus rhythm, heart rate: 60~100bpm

Indication: Normal

Ⅱ

Several abnormal ECG waveforms

1) Tachycardia: The heartbeat becomes faster. Tachycardia is determined by the rhythm of the heart, the average rhythm beats faster than 100

times a minute is considered as Tachycardia. The result description “Suspected fast beat” in this

device may be doubted as Tachycardia.

Symptom: heart rate>100bpm

Indication: It may occur with the normal people who have these physiology conditions: rage,

fatigue, smoking, drinking too much wine, excessive coffee and strong tea, etc.

Pathology: anemia, Hyperthyroidism, blood hypoxia, myocarditis, hypokalemia, fever, influence

of some medication (such as atropine, epinephrine etc.).

Suggestion: If it belongs to pathology condition, please go to hospital.

2) Bradycardia: The heartbeat becomes more slowly. It is determined by the rhythm of the heart,

the average rhythm is less than 60 beats per minute is considered as Bradycardia. The result description “Suspected slow beat” in this device may

be doubted as Bradycardia.

Symptom: heart rate<60bpm

Figure 1 Normal ECG Waveform

Figure 2 Tachycardia Waveform

Figure 3 Bradycardia Waveform

1 2 ... 31 32 33 34 35 36 37 38 39

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