A review of the normal physiology of sodium, potassium, and water. Major topics covered include the renin angiotensin aldosterone system, the hypothalamic pituitary adrenal axis, ADH (antidiuretic hormone), and the natriuretic peptides.
over 3 years ago
A website created especially for healthcare students to encourage learning of embryology, malformation and its clinical implications. The package aims to: reinforce and build upon current healthcare curriculum content for embryological teaching of head development, to complement and enhance current teaching/learning/revision for relevant examination(s), to include interactive elements such as self-tests in order to improve learning and retention of knowledge, and finally, to illustrate aspects of malformation for diagnostic/clinical teaching purposes
over 6 years ago
This video - produced by students at Oxford University Medical School in conjunction with the faculty - demonstrates how to deliver oxygen therapy through various devices, as well as the prescribing of oxygen.<br>It is part of a series of videos covering Respiratory Medicine skills.<br><br>Please see the BTS guidelines for more information:<br><a href="http://www.brit-thoracic.org.uk/guidelines/emergency-oxygen-use-in-adult-patients.aspx" target="_blank" title="http://www.brit-thoracic.org.uk/guidelines/emergency-oxygen-use-in-adult-patients.aspx" rel="nofollow" dir="ltr" class="yt-uix-redirect-link">http://www.brit-thoracic.org.uk/guidelines/emergency-oxygen-use-in-adult-pati...</a>
about 5 years ago
http://www.handwrittentutorials.com - This is the second tutorial in the Renal Anatomy series. This video explores the anatomy of the Nephron, and its component elements. For more entirely FREE tutorials and their accompanying PDFs, visit http://www.handwrittentutorials.com
over 3 years ago
Designed by Dr. Todd Ravins & Stephen Weisz. Graphics by Gina Fiore. Source: http://beejweir.tumblr.com/post/25441127256/toothorgan-relationship-chart-includes-glands
almost 2 years ago
This is an excerpt from "Fluids and Electrolytes Made Incredibly Easy! 1st UK Edition" by William N. Scott. For more information, or to purchase your copy, visit: http://tiny.cc/Fande. Save 15% (and get free P&P) on this, and a whole host of other LWW titles at lww.co.uk when you use the code MEDUCATION when you check out! Introduction The chemical reactions that sustain life depend on a delicate balance – or homeostasis – between acids and bases in the body. Even a slight imbalance can profoundly affect metabolism and essential body functions. Several conditions, such as infection or trauma, and certain medications can affect acid-base balance. However, to understand this balance, you need to understand some basic chemistry. Understanding pH Understanding acids and bases requires an understanding of pH, a calculation based on the concentration of hydrogen ions in a solution. It may also be defi ned as the amount of acid or base within a solution. Acids consist of molecules that can give up, or donate, hydrogen ions to other molecules. Carbonic acid is an acid that occurs naturally in the body. Bases consist of molecules that can accept hydrogen ions; bicarbonate is one example of a base. A solution that contains more base than acid has fewer hydrogen ions, so it has a higher pH. A solution with a pH above 7 is a base, or alkaline. A solution that contains more acid than base has more hydrogen ions, so it has a lower pH. A solution with a pH below 7 is an acid, or acidotic. Getting your PhD in pH A patient’s acid-base balance can be assessed if the pH of their blood is known. Because arterial blood is usually used to measure pH, this discussion focuses on arterial samples. Arterial blood is normally slightly alkaline, ranging from 7.35 to 7.45. A pH level within that range represents a balance between the concentration of hydrogen ions and bicarbonate ions. The pH of blood is generally maintained in a ratio of 20 parts bicarbonate to 1 part carbonic acid. A pH below 6.8 or above 7.8 is usually fatal. Too low Under certain conditions, the pH of arterial blood may deviate significantly from its normal narrow range. If the blood’s hydrogen ion concentration increases or bicarbonate level decreases, pH may decrease. In either case, a decrease in pH below 7.35 signals acidosis. Too high If the blood’s bicarbonate level increases or hydrogen ion concentration decreases, pH may rise. In either case, an increase in pH above 7.45 signals alkalosis. Regulating acids and bases A person’s well-being depends on their ability to maintain a normal pH. A deviation in pH can compromise essential body processes, including electrolyte balance, activity of critical enzymes, muscle contraction and basic cellular function. The body normally maintains pH within a narrow range by carefully balancing acidic and alkaline elements. When one aspect of that balancing act breaks down, the body can’t maintain a healthy pH as easily, and problems arise.
Lippincott Williams & Wilkins
over 4 years ago