Micro-teaching

The Electrocardiogram (ECG) measures

• Blood pressure

• Heart contraction and relaxation

• Electrical activity of the heart

• Electrical activity of the brain

A pacemaker ...

• is an implanted device with up to 3 leads that triggers a heartbeat by mechanically stimulating the heart

• is an implanted device with up to 3 leads that triggers a heartbeat by sending electrical stimuli to the heart

• is an external device with up to 12 leads that triggers a heartbeat by sending electrical stimuli to the heart

• is an implanted device with up to 3 leads that can stop life-threatening arrythmias

In a normally functioning heart, the heart's natural pacemaker is:

• The apex of the left ventricle

• From the atrio-ventricular node

• In a normal heart, there is no pacemaker

• The sinoatrial node

Ventricular fibrillation is a​ (a)   arrhythmia, which can be stopped by using a​ (b)   .

Atrial fibrillation is a​ (c)   arrhythmia that makes the heart rate irregular. If a patient with atrial fibrillation has a slow heart rate, a​ (d)   may be recommended to improve symptoms. Atrial fibrillation can be cardioverted using a ​ (e)  

• life-threatening
• defibrillator
• life-limiting
• pacemaker

Biventricular pacing is a pacing modality offered by advanced pacemakers. It usually requires 3 leads, placed on on the right atrium, right ventricle and ​ (a)   . It is particular useful in conditions such as ​ (b)   and it works by ​ (c)   left and right ventricular ​ (d)   .

• left ventricle
• heart failure
• contraction
• synchronizing
• under the skin
• bradycardia
• defibrillating