Oxygen Supply Chain

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Oxygen Supply and Analysis
Oxygen supply and Cardiac Output
Oxygen supply is determined by the hearts ability circulate blood, oxygen content present in blood, and the capacity of blood to transport oxygen (Gillespie, 2012). Cardiac output is determined by the heart rate and stroke volume, where stroke volume is the amount of blood ejected from the heart with each contraction (Gillespie, 2012). Preload, afterload, and contractility all affect cardiac output (Gillespie, 2012).
Preload. Preload is the volume of blood in the ventricles at the end of diastole (Gillespie, 2012). Total circulating volume, venous blood return, and ventricular compliance affect preload (Gillespie, 2012). Patient 1 has a decreased preload as he is bleeding profusely …show more content…

SaO2 reflects arterial oxygen saturation which is determined by the concentration of oxygen inspired, capacity to ventilate, and effectiveness of alveolar gas exchange (Gillespie, 2012). Normal Sa02 range is 95-100%. His SaO2 is 88% on RA which would indicate that the concentration of oxygen is low. We do not have enough much information so it is difficult to say what other factors may be affecting his arterial oxygen saturation and …show more content…

The movement of air into and out of lungs is known as ventilation (Gillespie, 2012). Factors that impact ventilation include muscle function, lung compliance, and air way resistance (Gillespie, 2012). Secretions in the lungs decrease compliance and increase resistance (Gillespie, 2012). He has a high RR of 32 indicating that increased work of breathing and poor ventilation. We would further assess use of accessory muscle indicating an increased work of breathing, presence of secretions which would decrease lung compliance and increase resistance (Gillespie, 2012). His overall tidal volume and vital capacity should be decreased due to a high RR. Having a problem with ventilation can result in a decreases SaO2 and therefore would decreases oxygen supply to organs and tissues (Gillespie, 2012). Alveolar gas exchange. We do not have too much information therefore cannot conclude if he has a V/Q mismatch. He however he has a SaO2 of 88% and therefore we would apply supplemental oxygen to increase the driving force of oxygen. We would further assess for pneumonia, his history eg asthma, preload and cardiac output, which would all result in a V/Q

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