Medical, Writers, Audible, Cool, images, Heart, Signs, Examination, Sounds, Percussion, Click, Auscultation, Egophony, Korotkoff, Precordial

Audible Medical Signs: Heart Sounds, Korotkoff Sounds, Auscultation, Precordial Examination, Percussion, Egophony, Heart Click

Chapters: Heart Sounds, Korotkoff Sounds, Auscultation, Precordial Examination, Percussion, Egophony, Heart Click, Pericardial Friction Rub, Pleural Friction Rub, Succussion Splash, Immediate Auscultation. Source: Wikipedia. Pages: 43. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: The heart sounds are the noises (sound) generated by the beating heart and the resultant flow of blood through it. This is also called a heartbeat. In cardiac auscultation, an examiner uses a stethoscope to listen for these sounds, which provide important information about the condition of the heart. In healthy adults, there are two normal heart sounds often described as a lub and a dub (or dup), that occur in sequence with each heart beat. These are the first heart sound (S1) and second heart sound (S2), produced by the closing of the AV valves and semilunar valves respectively. In addition to these normal sounds, a variety of other sounds may be present including heart murmurs, adventitious sounds, and gallop rhythms S3 and S4. Heart murmurs are generated by turbulent flow of blood, which may occur inside or outside the heart. Murmurs may be physiological (benign) or pathological (abnormal). Abnormal murmurs can be caused by stenosis restricting the opening of a heart valve, resulting in turbulence as blood flows through it. Abnormal murmurs may also occur with valvular insufficiency (or regurgitation), which allows backflow of blood when the incompetent valve closes with only partial effectiveness. Different murmurs are audible in different parts of the cardiac cycle, depending on the cause of the murmur. Normal heart sounds are associated with heart valves closing, causing changes in blood flow. The first heart tone, or S1, forms the "lubb" of "lubb-dub" or "lubb-dup" and is composed of components M1 and T1. Norm...http://booksllc.net/?id=237412









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