Psychology 2036A/B Lecture Notes - Lecture 20: Stroke Volume, Genetic Disorder, Myofibril
22 May 2020
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Most common cause of sudden death in the young. Myofibril disarrays: heart fibres are not aligned like in a normal heart. They still contract, but contract in all different direction so there is no change in size of diameter of ventricle. We"re not getting enough stroke volume so the walls grow stronger, but this doesn"t change anything, just makes the problem worse. Septum is larger and left ventricular wall thickness is greater. 0. 02% of population of 13-19 year olds affected (about 6 000 teenagers in canada) Half of young people that have heart issues have hypertrophic. Ventricles contract and purkinji fibres conduct depolarization through the heart. Qrs: initial depolarization moving into septum (as it moves back into the atria less tissue is being depolarized to decrease in wave) to decrease in wave) T- wave: electrical activity that leads to repolarization and relaxation of the tissue. Map= dias bp + [0. 33( sys bp - dias bp)]
