ECG Interpretation Made incredibly Easy PDF Download
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ECG Interpretation Made incredibly Easy
Lets see something about heart
The heart is a cone-shaped, muscular organ. It’s located in the chest, behind the sternum in the mediastinal cavity (or medi-astinum), between the lungs, and in front of the spine. The heart lies tilted in this area like an upside-down triangle. The top of the heart, or its base, lies just below the second rib; the bottom of the heart, or its apex, tilts forward and down, toward the left side of the body, and rests on the diaphragm.
The heart varies in size depending on the person’s body size, but the organ is roughly 5-(12.5 cm) long and 31/2-(9 cm) wide, or about the size of the person’s fist. The heart’s weight, typically 9 to 12 oz (255 to 340 g), varies depending on the person’s size, age, sex, and athletic conditioning. An athlete’s heart usually weighs more than that of the average person, and an elderly person’s heart weighs less.