French Revolution Quotes (160 quotes)
Man's bionic heart valve makes bizarre 'tick-tock' sound
THE symptoms of chest pain, dizziness, shortness of breath and extreme fatigue would frighten most people. But to Margaret, a year-old editor who had always been a very active and healthy person, they were terrifying. For years, Margaret had been an avid jogger who was now logging five miles a day on weekdays and more on weekends, which helped to relieve the pressures of her growing job responsibilities. The symptoms first appeared when she was working too hard on too many projects and at the same time preparing for a major business trip abroad. They reappeared the week before her vacation as she worked long hours to get everything done before leaving town. Her physician, who had detected a slight heart murmur several years earlier, now referred her to a cardiologist.
The authors describe a case of a year-old woman who presented with shortness of breath and exhibited a Hamman sign, an uncommon clinical finding. A year-old woman, in previous good health, presented to the ED with the chief complaint of shortness of breath. She stated that she woke up with acute dyspnea and a stabbing pain on the left side of her thorax, related to her breathing. The patient looked distressed upon presentation. During auscultation, the ticking noise was prominent in early systole and audible over all parts of the thorax. The sound was only heard when the patient was in the supine position and disappeared when she sat up.
Instead of closing evenly, one or both of the leaflets collapse or bulge back into the atrium, sometimes allowing small amounts of blood to flow back into the atrium. Mitral valve prolapse MVP is among the most common heart conditions, but it remains something of a puzzle. MVP often occurs in people who have no other heart problems, and the condition may be inherited. The mitral valve consists of two flaps called leaflets. Normally, the leaflets open and shut in coordinated fashion to allow blood to flow in one direction—from the atrium to the ventricle.
Written by Karen Kingston. February 12, One of the primary effects of living with a ticking clock is that you are likely to feel that time is limited or running out for you. This is because the constant background ticking noise provides a continual reminder that time is passing. Your conscious mind soon learns to tune it out but your subconscious continues to hear every tick. In one study by researchers at Florida State University, people were asked to fill out questionnaires about their ideal partner and what age they would like to get married and have children. It was found that, when there was a ticking clock in the room, women opted for getting married and having babies at an earlier age.