O Cardiology and Angiology

History of man's knowledge of the heart; its place in human physiology, and treatment of diseases, including surgical, resulting from its malfunctions

O	Cardiology Angiology and Cardiovascular system
O.F	Blood Circulation
OB	Hypertension
OH	Thrombosis
OH.R	Treatment of Thrombosis
OI	Embolism
ON	Pericardium
OO	Heart
OO.P	Heart, Diseases
OO.PH	Fallot's Tetralogy
OO.V	Heart Surgery
OOH	Cardiography; Electrocardiography; Heart Beat; Pulse
OOI	Arrythmia
OOJ	Disordered Heart Action
OOJ.C	Auricular Flutter
OOK	Heart Failure
OQ	Myocardium
OQC	Angina Pectoris
OS	Arteries; Bloodvessels
OS.PS	Aneurism
OSW	Cartoid arteries. Moyamoya
OU	Veins
OU.C	Valves
OV	Lymphatic System