Cardiograph System Essay

Blood vessel length, when increased causes more friction or resistance thus making it more difficult for blood to flow through the vessel. In summation, increasing blood vessel length inversely effects flow rate but decreasing flow rate. My prediction was that an increase in blood vessel length would inversely effect blood flow. As evidenced in this experiment, with the increase of the blood vessel length, there was a decrease in blood flow.

The EKG Technician is the person responsible for performing diagnostic tests to access the heart rhythm and rate in patients. EKG technician is an integral part of the management of patients with heart disease. The EKG Technician may also clean equipment, maintain and process data reports. The course will prepare students with the theory, academics and clinical education necessary to function as an entry level EKG technician. This course may be taken as a module toward completion of the PCT program, or it may be taken independently as an individual skills course. The course structure will consist of introduction to EKG, applied EKG and clinical EKG.

At the latter end of the p-q interval, atrial contraction occurs forcing additional blood into the ventricles. At the beginning of the QRS interval on an ECG reading, the mitral valve closes and the ventricles are at EDV (135ml). During the QRS interval, ventricular contraction occurs increasing the pressure in the ventricle and the aorta. When the pressure continues in the ventricle exceeds the pressure in the arteries, the aortic valve opens and blood is ejected. The increased pressure continues through the t peak. The ventricles are now in ESV (65ml) and the aortic valve is closed. Now the ventricles are relaxed causing pressure to fall and the cardiac cycle starts over again. This ECG reading was from a normal tracing. Keep in mind that an ECV is easy to obtain, but there are some subtleties that are very complex.

Composed of the heart, blood vessels, and blood, the cardiovascular system is the body system that carries out the tasks of pumping and transporting blood, oxygen, nutrients, and waste products, and other substances throughout the body.

The heart, blood and blood vessels make up the basis of the cardiovascular system also known as the circulatory system. The average human body contains approximately 5 litres of blood which is carried around the body via a network of blood vessels split into three types; arteries, veins and capillaries. The arteries are the largest of the three vessels and carry blood away from the heart. Veins carry blood to the heart and are smaller than arteries, then finally the smallest vessels known as capillaries distribute the oxygen rich blood to organs whilst simultaneously picking up the waste carbon dioxide and water from the organs to transport back to the heart where it can be pumped into the lungs to be exhaled.

Over the last month for three times a week, I shadowed a cardiologist, Dr. Jain. I will say that I don’t know whether or not cardiology is the direction for me, especially since another 20 specialties plus subspecialties are out there to explore, but it is a practice worth shadowing for several reasons. Perhaps the most important reason is the simple fact that it concerns one of the most important organs of the body: the heart. Cardiologists are medical doctors who have specialized knowledge in the diagnosis and treatment of health disorders relating to the cardiovascular system. A cardiologist does not only diagnose and treat disease, but will work in the area of prevention help reduce the risks of conditions such as heart disease.

has to work harder pumping blood to the rest of the body. Blood in our

An dysrhythmia of the heart is an irregular heartbeat rhythm. Ventricular tachycardia is an dysrhythmia in which the lower chambers of the heart, the ventricles, beat unusually fast.

The S-A node signal is delayed by the atrioventricular node to allow the full contraction of the atria that allows the ventricles to reach their maximum volume. A sweeping right to left wave of ventricular contraction then pumps blood into the pulmonary and systemic circulatory systems. The semilunar valves that separate the right ventricle from the pulmonary artery and the left ventricle from the aorta open shortly after the ventricles begin to contract. The opening of the semilunar valves ends a brief period of isometric (constant volume) ventricular contraction and initiates a period of rapid ventricular ejection.

During inspection of the heart assessment observe abnormal finding. Inspect the jugular vein and the carotid artery. Note pallor or cyanotic skin color, temperature, turgor, texture, and clubbing of finger. Observe for swelling, edema and ulceration. Clubbing is a sign of chronic hypoxia caused by a lengthy cardiovascular or respiratory. Poor cardiac output and tissue perfusion is noted by cyanosis and pallor. For dark-skinned, inspect his mucous membranes for pallor. Decreases or absent of pulse with cool, pale, and shiny skin, and hair loss to the area, and the patient may have pain in the legs and feet may indicate arterial insufficiency. Ulcerations typically occur in the area around the toes, and the foot usually turns deep red when dependent

Regular electrical impulses are sent within the conduction system of the heart prompting contraction (Marieb, 2015). These electrical signals can be identified and documented by the use of an electrocardiography (ECG) machine. In a familiar ECG recording, three waves will occur; The P wave, QRS complex and

This allows your cardiovascular centres in your brain a little bit more latitude as far as controlling your heart rate. If you were to remove a beating heart from someone's body you would find that the heart is no longer being suppressed by the parasympathetic nervous system and it will accelerate to the same pace as the sinoatrial node. The SA node generates action potentials approximately 100 times per minute due to the physiology of the heart, its own permeability to sodium and calcium via its channels, and a host of other things. Anywhere between 80 to 100 beats per minute is normal for the SA node.

veins to the tissues of the body. These walls do not let out blood but

The heart is one of the most important organs in an organism’s body, no matter if they are aquatic, amphibian, or a mammal. This super organ works automatically, able to pump massive amounts of oxygen rich blood through the body by means of electrical impulses and the opening and closing of valves within its many layers. It is what keeps us and every other creature on this earth alive; so it is only natural for one to fear when there might be a problem with one’s heart. A cardiac arrhythmia can happen to anyone, no matter the age, race, or gender, and as such, doctors and scientist have spent years trying to better understand the heart and the way it functions so that they can try to prevent these problems and save millions of lives.

Recording an electrocardiogram or ECG, is a procedure which is performed daily all over the United Kingdom by thousands of healthcare workers and in particular nurses (Jacobson, 2000). The way in which this procedure is performed varies from geographical location to location and occasionally even more so, between staff on the same ward (Amos, 2000). This reason stated by Amos (2000), formed the basis of my decision to choose this topic.