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Superior mesenteric artery compressing the duodenum, featuring the superior mesenteric artery syndrome. Superior mesenteric artery (SMA) syndrome is a gastro-vascular disorder in which the third and final portion of the duodenum is compressed between the abdominal aorta (AA) and the overlying superior mesenteric artery.
The first heart sound, or S 1, forms the "lub" of "lub-dub" and is composed of components M 1 (mitral valve closure) and T 1 (tricuspid valve closure). Normally M 1 precedes T 1 slightly. It is caused by the closure of the atrioventricular valves , i.e. tricuspid and mitral (bicuspid), at the beginning of ventricular contraction, or systole .
The normal range has since been revised in textbooks to 50–90 bpm for a human at total rest. Setting a lower threshold for bradycardia prevents misclassification of fit individuals as having a pathologic heart rate. The normal heart rate number can vary as children and adolescents tend to have faster heart rates than average adults.
Next round is on NBA legend Charles Barkley!. Barkley, 61, earned the love of Fredonia, New York after he bought drinks for an entire local bar over the weekend after attending a college hockey game.
Updated January 1, 2025 at 11:22 AM. Authorities have identified the woman who burned to death after she was set on fire inside a New York City subway train as 57-year-old Debrina Kawam.
The Centers for Disease Control and Prevention says there is a reported spike in human metapneumovirus (HMPV) in China, and they are monitoring it closely.
Ectopic beat is a disturbance of the cardiac rhythm frequently related to the electrical conduction system of the heart, in which beats arise from fibers or group of fibers outside the region in the heart muscle ordinarily responsible for impulse formation (i.e., the sinoatrial node).
Normal Values of Standard Measures of HRV [90] Time Domain Analysis Spectral Analysis Variable Units Normal Values (mean±SD) Variable Units Normal Values (mean±SD) IBI ms 926±90 LF ms 2: 519±291 SDNN ms 50±16 HF ms 2: 657±777 RMSSD ms 42±15 LF nu 52±10 HF nu 40±10 LF/HF ratio 2.8±2.6