Blood Pressure Essay Example | Topics and Well Written Essays - 250 words

Blood Pressure - Essay Example Diastolic pressure is a result of ventricular diastole or relaxation and this pattern was observed because the arteries in the working muscles started to dilate rather than constrict. The decrease in the diastolic pressure observed was a result of working at a less than maximum heart rate. In the same observation the heart rate at rest was measured at 61. This measurement spiked to 108 and 147 at 1kg and 2.5kg workloads respectively. This increase of heart rate during exercise was a result of the withdrawal of vagus nerve tone & sympathetic stimulation of the heart. Resting heart rates and maximum heart rates differ from one person to another depending on the age, gender and fitness level. The double product (also called the rate pressure product – RPP) is obtained by multiplying the heart rate by the systolic blood pressure. Since both the heart rate and the systolic blood pressure increased with increased activity during the experiment, the double product inevitably also increased from 6,710.00 (at rest), to 12, 960.00 (at 1kg workload) and finally 20, 580.00 (at 2.5kg workload). The mean arterial pressure (MAP) is the average arterial pressure in a single cycle (the average blood pressure in an individual). It is obtained from the addition of the product of the cardiac output and systemic vascular resistance to the central venous pressure. In the experiment, the mean arterial pressure at rest was 83.33 at rest then dropped at steadied at 73.33 during both 1kg and 2.5 kg workloads. The mean arterial pressure is observed to stay constant because increased flow of blood through exercising muscles is compensated for remarkably well by an increased cardiac output and adjustments to

Define the medical model of health and describe the differences when Essay

Define the medical model of health and describe the differences when compared to the social model of health - Essay Example This health model is based on a medical scientific paradigm that emphasizes a restoration of health to a state of general well-being and the key word is recovery (Lyng, 1990:100). On the other hand, the social model of health emphasizes the prevention measures that can be made on society as a whole that will promote overall well-being in a certain population by making some changes in the lifestyles of people. In other words, the social model of health looks at the social causes of diseases and examines how the breakdown in social systems can be contributory to the outbreak and spread of diseases (Earle, 2007:55). The large-scale health projects commonly adopted by governments to eradicate certain diseases embrace this social model of health by trying to change a whole citys or even an entire countrys population. This latest concept to sweep among public health policy makers compares societal breakdowns as the primary cause of diseases within society. A good example would be social and economic inequalities which contribute to the poor health of certain segments of society such as ethnic or minority groups which do not have access to proper medical care servic es. The medical model of health is concerned mainly with the health of an individual and this is more or less in terms of physical health. This model takes a narrower view of the health of the individual in terms of physiological or biological changes as determined by a diagnosis. On the other hand, the social model of health takes an encompassing view of the health of the entire society and is a multi-disciplinary endeavour ranging from surveillance and detection of diseases in a population (epidemiology) to the promotion of public health through a provision of relevant health advice and timely health information. As such, the social model of health acquires greater significance in terms of promotion of the economic well-being of a nation as well.