venous return
51Chronotropic — effects (from chrono , meaning time, and tropos, a turn ) are those that change the heart rate. Chronotropic drugs may change the heart rate by affecting the nerves controlling the heart, or by changing the rhythm produced by the sinoatrial node …
52Cardiac cycle — Cardiac events occurring in the cardiac cycle. Two complete cycles are illustrated. The cardiac cycle is a term referring to all or any of the events related to the flow or blood pressure that occurs from the beginning of one heartbeat to the… …
53Contractility — Myocardial contractility is the intrinsic ability of the heart to contract independent of preload and afterload. Changes in the ability to produce force during contraction result from different degrees of binding between myosin (thick) and actin… …
54Myogenic mechanism — The myogenic mechanism is how arteries and arterioles react to an increase or decrease of blood pressure to keep the blood flow within the blood vessel constant. The smooth muscle of the blood vessels reacts to the stretching of the muscle by… …
55Dromotropic — Derives from the Greek word Dromos , meaning running, a course, a race. A dromotropic agent is one which affects the conduction speed in the AV node, and subsequently the rate of electrical impulses in the heart.[1][2] Agents that are dromotropic …
56Nitrovasodilator — nitric oxide nitroglycerine …
57VR — Abbreviation for vocal resonance. * * * right arm [electrode]; Valsalva ratio; valve replacement; valvular regurgitation; vanilloid receptor; variable rate; variable ratio; variable region; vascular resistance; vasopressin receptor; venous flow… …
58Mean circulatory filling pressure — In medicine, the mean circulatory filling pressure (Pmcf) is defined as the mean pressure that exists in the vascular system if the cardiac output stops and the pressure within the vascular system redistributes. It is an indicator of how full the …
59Multifunction cardiogram — Multifunction CardioGramTM (MCGTM) is an FDA and AMA approved diagnostic tool used to diagnose myocardial ischemia due to Coronary Artery Disease (CAD). MCG records resting ECG data between the Myocardium and intra cardiac blood flow to… …
60Electrocardiography — ECG redirects here. For other uses, see ECG (disambiguation). Not to be confused with echocardiogram, electromyogram, electroencephalogram, or EEG. Electrocardiography Intervention Image showing a patient connected to the 10 electrodes necessary …
