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Page 1: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase
Page 2: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Cardiac Conduction System

Page 3: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Sinoatrial (SA) node

Page 4: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Atrioventricular (AV) node

Page 5: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Antrioventricular (AV) Bundle

(Bundle of His)

Page 6: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Right bundle branch

Page 7: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Left bundle branch

Page 8: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Purkinje Fibers

Page 9: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

EKG = ECG =

electrocardiogram

Page 10: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Leads (limb leads)

Page 11: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

P wave

Atrial Depolarization

Page 12: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

QRS complex

Ventricular Depolarization

Page 13: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

T wave

Ventricular Repolarization

Page 14: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Depolarization

Page 15: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Repolarization

Page 16: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Bradycardia

Resting heart rate under 60 bpm

Page 17: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Tachycardia

Heart rate exceeds 100 bpm

Page 18: Cardiac Conduction System1).pdfCardiac Conduction System S-A node A-V node A-V bundle Interatrial septum Left bundle branch Interventricular septum Purkinje fibers (a) (a) (a) ghase

Fibrillation

Rapid, irregular, and unsynchronized contraction of muscle fibers


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