All About Cardiovascular System and Disorders

Congenital cyanotic heart diseases can be classified into those with decreased pulmonary blood flow and those with increased pulmonary blood flow.

Positron emission tomography (PET) can measure both the myocardial perfusion and metabolism.

Magnetic resonance angiography (MR angio) is a non invasive technique which enables excellent visualization of the peripheral arteries.

KCNJ5 or the potassium inwardly-rectifying channel, subfamily J, member 5 is the gene involved in in congenital long QT syndrome 13 (LQTS13).

Long QT syndrome 13 (LQT13) has been described by Yang and associates in a large four generation Chinese family in 2010.

Twelve types of familial atrial fibrillation has been described in the OMIM (Online Mendelian Inheritance in Man) database.

Familial WPW syndrome: About three percent of WPW syndrome can have a familial occurrence and one of the genes identified is PRKAG2.

CPVT in short for catecholaminergic polymorphic ventricular tachycardia is probably the most lethal of the cardiac channelopathies.

Long QT syndromes have a phenotype of delayed depolarization due to ion channel mutations, causing QT prolongation and risk of ventricular arrhythmias.

Important cardiac channelopathies are the long QT syndromes, Brugada syndrome, CPVT, short QT syndrome and congenital sick sinus syndrome.