ADVANCED CLINICAL CONCEPTS • ARDS is an unexpected‚ catastrophic pulmonary complication occurring in a person with no previous pulmonary problems. The mortality rate is high (50%) In ARDS‚ a common laboratory finding is lowered PO2. However‚ these clients are not very responsive to high concentrations of oxygen. Think about the physiology of the lungs by remembering PEEP: Positive End Expiratory Pressure is the instillation and maintenance of small amounts of air into the alveolar sacs to prevent
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The heart is a hollow muscular organ that pumps blood throughout the blood vessels to various parts of the body by repeated‚ rhythmic contractions. It is found in all animals with a circulatory system‚ which includes the vertebrates. The adjective cardiac means "related to the heart" and comes from the Greek καρδιά‚ kardia‚ for "heart". Cardiology is the medical speciality that deals with cardiac diseases and abnormalities. The vertebrate heart is principally composed of cardiac muscle and connective
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Structure of the heart: The heart is at the centre of the cardiovascular system. It is a hollow muscular pump that drives blood through the arteries‚ which allows it to reach the working muscles and tissues. The heart is split into two halves. The right side of the heart is separated from the left by a solid wall known as the septum. This prevents any blood on the right side coming into contact with the blood on the left side. The right side of the heart sends deoxygenated blood to the lungs in
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forming part if the circulation system by which blood is conveyed from the heart to all the parts of the body 4. Bundle of His Collection of heart muscles specialized for electrical conduction 5. Capillaries Any of the fine branching blood vessels that form a network between the arterioles and venules Heart vocabulary: Inferior vena cava A large vein carrying deoxygenated blood into the heart from the lower body Left atrium Receives oxygenated blood from the pulmonary veins Mitral valve
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pulmonic valve into the pulmonary artery and to the lungs. Blood flows from the lungs to the left atium by way of the pulmonary veins. It then passes through the mitral valve and into the left ventricle. As the heart contracts‚ blood is ejected through the aortic valve into the aorta and thus enters the high-pressure systemic circulation. (p. 740) As the blood flow is ejected into the systemic circulation (afterload)‚ it is ejected into the arterial side of circulation from the left ventricle
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Blood a journey through the body. You might find yourself asking‚ what does blood have to do with digestion‚ respiration and circulation? Hopefully‚ after the presentation all of your questions will be answered. When a person thinks of digestion they usually think about what happens in the stomach. A lot has happened to digest the food way before it gets to the stomach. It starts in the mouth or oral cavity. It is a process called mechanical digestion. First‚ Mastication begins. Mastication
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FOCUS Clots Wai Khoon Ho Deep vein thrombosis Risks and diagnosis Venous thromboembolism (VTE)‚ comprising deep vein thrombosis and pulmonary embolism (PE)‚ is the third commonest vascular disorder in Caucasian populations.1 In Australia‚ DVT alone (without concomitant PE) affects 52 persons per 100 000 annually.2 Timely management of DVT is important as it is a common cause of morbidity. Thromboses of the deep veins in the upper limbs and ‘unusual sites’‚ such as mesenteric veins‚ constitute
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nitrogenous wastes). Atria: Ventricles: In a four-chambered heart‚ such as that in humans‚ there are two ventricles that operate in a double circulatory system: the right ventricle pumps blood into the pulmonary circulation to the lungs‚ and the left ventricle pumps blood into the systemic circulation through the aorta. Bicuspid (mitral) valve: It permits blood to flow one way only‚ from the left atrium into the left ventricle. This valve is more commonly called the mitral valve because it has two
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LABORATORY REPORT (Click on the Save a Copy button on the panel above to save your report) Activity: Name: Instructor: Date: Effect of Exercise on Cardiac Output August 26‚ 2013 Predictions 1. During exercise HR will increase. 2. During exercise SV will decrease. 3. During exercise CO will increase. Materials and Methods 1. Dependent Variable EDV‚ ESV‚ and cardiac cycle length 2. Independent Variable level of physical activity(resting or exercise) 3. Controlled Variables age‚ weight
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Davies‚ 2011). This is a low priority. B. BREATHING – Respiration is altered due to left ventricular failure. The patient is tachypnoeic due to an increased pressure in the pulmonary veins that will lead to pulmonary congestion that lessens pulmonary compliance‚ which raises the respiratory rate. Also‚ increased blood flow
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