Cardiac pacemaker

When you’re suffering with the health and improper functioning of your heart, it is important to do your own research and find a cardiologist who’s right for you immediately. The overall quality , excellence in this field and reputation of cardiac care of the hospital where they practice is often a good benchmark for cardiologists. When you are looking for best Cardiologist, experience and reputation does matter. The more experience a cardiologist has with a condition or procedure, the best your…

transferred to another hospital so they could put in a Medtronic Pacemaker. From a very young age, I was always interested in my pacemaker and how it works. Some days I would spend a lot of my time just thinking about my pacemaker and other surgeries that go on, on a day to day basis. I’ve have been told the common information about why I needed it but I always wanted to know more about certain surgeries. My mom happens to be a cardiac nurse. I grew up knowing some of her weird stories…

Critical Test In the year 1988, there were 350,000 cases of Polio. In 2012, there were only 223 (“Poliomyelitis). This large decrease in the number of cases of Poliomyelitis is due largely to the efforts of research scientists and the development of vaccines and the improvement of those vaccines. Perhaps just as important as the scientists in this case are the animal subjects in the testing. Animal testing in the scientific arena is vital to the successful discovery of new vaccines, the…

Complications Cardiac catheterization is categorized as an invasive procedure that involves the heart, its valves, and coronary arteries, in addition to femoral artery which is a large artery. Cardiac catheterization complications can be classified in to cardiac and vascular complications.…

The heart has connective tissue in the form of fibrillary collagen that offers support (Burlew & Weber, 2000). The heart has cardiac muscle, which has intercalated discs to give the signal to contract and start the heartbeat (Ireland, 2012). Smooth muscle is also present in the arteries and vasculature (Xin, Olson, & Bassel-Duby, 2013). The heart also has parasympathetic and sympathetic…

Background & Objectives: Arthropods have neurogenic hearts, which have pacemakers as part of the nervous system found outside the heart. Vertebrates and molluscs have myogenic hearts, where the pacemaker is composed of specialized cardiac muscle within the heart. Daphnia is unique as it is a cladoceran crustacean reported to have a myogenic heart. To test this, use drugs known to change heart rate in myogenic hearts and observe if they have the same influence on Daphnia. Methods: Used a…

with coronary circulation are the small cardiac vein, the middle cardiac vein, and the great cardiac vein. These three coronary veins ultimately join to form the coronary sinus which is essentially an enlarged vessel that allows for venous blood to be emptied into the right atrium. The orifice of coronary sinus which is where the coronary sinus ultimately drains into the right atrium is essentially guarded by the thebesian valve (Gilroy, 2013). The small cardiac vein which runs along the same…

Through the years and experimenting, namely by D. R. Hooker and Albert Hyman, knowledge of defibrillation has been expanded and the pacemaker came into existence. Heart monitors and pulse detectors were preceded by the electrograph. In 1887 a scientist by the name of August Waller created the electrograph, which tracked the minute electrical currents in the heart. During World War Two…

the body’s demand for blood delivery. Cardiac output is ever changing due to the body’s metabolic needs varying. If strenuous physical activity is done the cardiac output will increase to accommodate the demand for blood flow to the skeletal muscles. Heart rate is affected primarily by the sympathetic nervous system (increases HR) and the parasympathetic nervous system (decreases HR). These systems change the depolarization and repolarization of the pacemaker cells of the conducting system.…

3. Explain the heart generates and conducts an electrical current. Page 388 The heart has its own built-in conduction system for generating action potentials spontaneously and coordinating contractions during the cardiac cycle. All the cardiac muscle fibers in each region of the heart are electrically linked together. The intercalated disks are connections that electrically join the muscle fibers of the heart into a single unit that can conduct electrical impulses through the entire wall of…