Cardiovascular changes during hemorrhage

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Cardiovascular changes during hemorrhage

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Anatomy of the coronary circulation
Anatomy clinical correlates: Heart
Anatomy clinical correlates: Mediastinum
Development of the cardiovascular system
Fetal circulation
Blood pressure, blood flow, and resistance
Pressures in the cardiovascular system
Laminar flow and Reynolds number
Resistance to blood flow
Compliance of blood vessels
Control of blood flow circulation
Microcirculation and Starling forces
Measuring cardiac output (Fick principle)
Stroke volume, ejection fraction, and cardiac output
Cardiac contractility
Frank-Starling relationship
Cardiac preload
Cardiac afterload
Law of Laplace
Cardiac and vascular function curves
Altering cardiac and vascular function curves
Cardiac cycle
Cardiac work
Pressure-volume loops
Changes in pressure-volume loops
Physiological changes during exercise
Cardiovascular changes during hemorrhage
Cardiovascular changes during postural change
Action potentials in myocytes
Action potentials in pacemaker cells
Excitability and refractory periods
Cardiac excitation-contraction coupling
Cardiac conduction system
Cardiac conduction velocity
ECG basics
ECG rate and rhythm
ECG intervals
ECG QRS transition
ECG axis
ECG normal sinus rhythm
Baroreceptors
Chemoreceptors
Renin-angiotensin-aldosterone system
Atherosclerosis and arteriosclerosis: Pathology review
Coronary artery disease: Pathology review
Peripheral artery disease: Pathology review
Valvular heart disease: Pathology review
Heart failure: Pathology review
Ventricular arrhythmias: Pathology review
Supraventricular arrhythmias: Pathology review
Heart blocks: Pathology review
Aortic dissections and aneurysms: Pathology review
Hypertension: Pathology review
Shock: Pathology review
Vasculitis: Pathology review
Nerves and lymphatics of the pelvis

Flashcards

Cardiovascular changes during hemorrhage

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Key Takeaways

The sudden loss of blood that occurs during hemorrhage causes the cardiovascular system to change in several ways. The perfusion to various organs becomes compromised, leading to different compensatory mechanisms by the body to restore appropriate perfusion. The most immediate change is that the heart rate will increase as the body tries to get more blood to the vital organs. The blood pressure will also decrease, leading to hypoperfusion of the tissues, which means that insufficient oxygen and nutrients are getting delivered to the cells. Hemorrhage can cause organ damage and even death due to hypovolemic shock.