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Paramedic Practice ( TOPIC FOUR) - Essay Example

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Today’s date Your name  Your student number Your email Course name PARA1006 Topic section four Instructor Marc Colbeck Apart from the assigned reading, I also referenced the following sources to learn about this section. The ones I found most useful (that I would recommend to others) are marked with an asterisk (*) 1…
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Download file to see previous pages *Hlastala, MP and Berger, AJ. (2001). Physiology of respiration. Washington, DC: Oxford University Press. The most interesting thing I read for this session was: 1. Hyperventilation causes light-headedness, fainting, dizziness and headache not due to lack of oxygen but due to lesser than normal level of carbon dioxide in blood. The reduction in CO2 increases the pH levels of the blood and the increased alkalinity causes constriction of blood vessels lowering transmission of oxygen to the brain and nervous system. 2. The oxyhaemoglobin dissociation curve is interesting to study about because it demonstrates how even if the partial pressure of oxygen in the arterial blood is reduced perhaps due to altitude or lung infection, the haemoglobin saturation is not adversely affected as the curve becomes flatter. 3. An average adult person can breathe in about 13000 litres of air in a day assuming that there are about 15 breaths in a minute each intake being about 500-700mL. Three main things I learned from this session were:   1. The process of respiration occurs with the inhalation of atmospheric air carrying 21% oxygen and the transport of oxygen from the nares, to the nasal cavity, larynx, pharynx, trachea, bronchus to the brochioles and alveoli. There the diffusion of oxygen takes place across the alveolar epithelia and into the blood capillaries. The red blood cells flowing through the adjacent capillaries release CO2 into the alveoli through diffusion and bind oxygen. This results in a change in the colour of the blood- purplish red, when it is in deoxygenated state, to bright red in oxygenated state. The oxygenated blood is circulated throughout the body while the CO2 is passed out of the lungs and out of the body. 2. Our bodies use oxygen to produce high energy molecules like ATP and NADH through the process of respiratory chain reaction and oxidative phosphorylation pathways, for use in the body’s chemical and physiological activities. The blood carries the oxygen along with other nutrients to other parts of the body and carries back the carbon dioxide to be sent out by the lungs. The heart is of vital importance here since the blood is pumped throughout the body by the heart. 3. Lung disorders could be caused due to increased resistance as in the case of bronchospasm, mucous production and swelling causing diseases like asthma and anaphylaxis or due to decreased compliance that cause chest wall restriction and fluid build up resulting in diseases like fibrosis, pneumonia and pulmonary edema. Previously, I thought the following were true, but I learned that they aren’t:   1. Only oxygen needs to be present in oxygen tanks: Oxygen tanks require the presence of other gases than oxygen because our bodies need the partial pressure of the oxygen to be influenced by the presence of other gases like nitrogen and carbon dioxide since our bodies are acclimatized to it. Divers suffer from bends under high water pressure while diving deep inside caves. To avoid this situation a mixture of gases is used in oxygen tanks of divers. 2. I used to think that fast breathing like when panting after a brisk walk or run is better but it is not true because, the bigger the breath, the better it is for the body. Greater lung capacity means better circulation and greater metabolic efficiency. 3. Heart rates differ because of the presence of chemicals, autonomic reasons and other factors. This is interesting to note because the rates are then different ...Download file to see next pagesRead More
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