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Tag: "beats" at biology news

Slowing the racing heart

...the human heart, one cell -- the pacemaker cell -- beats faster or slower to induce a rhythmic heartbeat that varies to increase or decrease the blood flow to the body as we eat, sleep or exercise. "Disturbances of pacemaker control are common in heart diseases. When the heartbeat becomes non-rhythmic ...

A case of mistaken identity for the ivory-billed woodpecker?

...ings were thought to beat more slowly that the 8.6 beats per second captured on Luneau's video, and its win... video footage showed that its wings did reach 8.6 beats per second during an escape flight. He also found that as Pileated Woodpeckers fly away from the cam...

On the golf tee or pitcher's mound, brain dooms motion to inconsistency

...ng, before the movement even began. Flexibility beats consistency For athletes, the inability to replicate the perfect movement might seem to be a frustrating problem that needs to be solved. But the researchers speculate that the brain has evolved its apparently improvisational style precisely becau...

UC Davis researchers move biotechnology closer to replacing electronic pacemakers

...y, including average heart rates of about 70 to 80 beats per minute, are similar to humans. In the current study, researchers used radiofrequency ablation to remove the SA nodes in pigs' hearts. This is the same minimally invasive technique cardiologists use in clinics to destroy the heart cells that ca...

Thinner and younger

... subjects. Their hearts were able to relax between beats in a way similar to the hearts of younger people. The team from the Pennington Biomedical Research Center reports in the April 5 issue of the Journal of the American Medical Association on a six-month study of men and women between 25 and 50 who wer...

Mice with glowing hearts shed light on how hearts develop

...orce of heart contractions. Since the mouse heart beats approximately 6 to 10 times per second, imaging re...m on top and a ventricle on the bottom. A delay in beats between the two gives the atrium time to contract and push blood through the heart, but the mechanis...

Study: Paramedics save more lives when they don't follow the rules

...a condition in which the heart quivers rather than beats but can be shocked back into normal beat with a defibrillator. In contrast, the survival rate was only 20 percent in the 3 years before, when the standard CPR protocol was used. The current study, which involved 125 patients, reports the experience...

For one Stanford doctor, the beat goes on during open-heart surgery

...d loss, stroke, kidney failure and irregular heart beats were considered, beating-heart surgery had a definite advantage over conventional bypass. "Beating-heart surgery is an advance in cardiac surgery because it provides a better result for patients," said John Puskas, chief of cardiothoracic surgery at...

New defibrillator signals doctor of patient's irregular heartbeat or device malfunction

...less satellite transmission if the patient's heart beats abnormally or if the device malfunctions, e.g., battery failure. When a patient's status changes, a built-in microchip of Biotronik's Lumos DR-T implantable cardioverter defibrillator (ICD) sends a signal to a satellite via a small transmitter th...

Implanted Devices Detect High-Risk Heart Failure Patients

...e heart back into normal rhythm whenever the heart beats irregularly. In addition to maintaining the heart, the devices also collect heartbeat-by-heartbeat data that can be downloaded from the device and entered into a computer. One use of the data in this trial was to create a "footprint," or visual repr...

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