manometry Essay Example

manometry Essay Example manometry Essay manometry Essay Patient Information on Anorectal Manometry What is anorectal manometry? Anorectal manometry is a test performed to evaluate patients with constipation or fecal incontinence. This test measures the pressures of the anal sphincter muscles, the sensation in the rectum, and the neural reflexes that are needed for normal bowel movements. PREPARATION FOR THE PROCEDURE Give yourself one or two [emailprotected] enemas 2 hours prior to your study. You can purchase the Fleet enema from a pharmacy or supermarket. You should not eat anything during the two hours prior to the procedure. If you are diabetic, this may involve adjusting your diabetic medications. You may take regular medications with small sips of water at least 2 hours prior to the study. THE PROCEDURE The test takes approximately 30 minutes. You will be asked to change into a hospital gown. A technician or nurse will explain the procedure to you, take a brief health history, and answer any questions you may have. The patient then lies on his or her left side. A small, flexible tube, about the size of a thermometer, with a balloon at the end is inserted into the rectum. The catheter is connected to a machine that measures the pressure. During the test, the small balloon attached to the catheter may be inflated in the rectum to assess the normal reflex pathways. The nurse or technician may also ask the person to squeeze, relax, and push at various times. The anal sphincter muscle pressures are measured during each of these maneuvers. To squeeze, the patient tightens the sphincter muscles as if trying to prevent anything from coming out. To push or bear down, the patient strains down as if trying to have a bowel movement. Two other tests may be done: first, an anal sphincter electromyography (EMG), a test to evaluate the nerve supply to the anal muscle; second, measurement of the time it takes to expel a balloon from the rectum. After the examination, you may drive yourself home and go about your normal activities. Anal Sphincter EMG Anal sphincter electromyography (EMG) is recorded with a small plug electrode placed in the anal canal. The patient then is asked to relax, squeeze and push at different times. The anal sphincter muscle electrical activity is recorded and displayed on a computer screen. Anal sphincter EMG confirms the proper muscle contractions during squeezing and muscle relaxation during pushing. In people who paradoxically contract the sphincter and pelvic floor muscles, the tracing of electrical activity increases, instead of decreasing, during bearing down to simulate a bowel movement (defecation). Normal anal EMG activity with low anal squeeze pressures on manometry may indicate a torn sphincter muscle that could be repaired. Balloon Expulsion Test For this procedure, a small balloon is inserted into the rectum and then inflated with ater. The patient goes to the bathroom and tries to defecate (expel) the small balloon from the rectum. The amount of time it takes to expel the balloon is area. What can be learned from anorectal manometry? The anal and rectal area contains specialized muscles that are helpful to regulate proper passage of bowel movements. Normally, when stool enters the rectum, the anal sphincter muscle tightens to prevent passage of stool at an inconvenient time. If this muscle is weak or does not contract in a timely way, incontinence (leakage of stool) may occur. Normally, when a person pushes or bears down to have a bowel movement, the anal sphincter muscles relax. This will cause the pressures to decrease allowing evacuation of stool. If the sphincter muscles tighten when pushing, this could contribute to constipation. Anal manometry measures how strong the sphincter muscles are and whether they relax as they should during passing a stool. It provides helpful information to the doctor in treating patients with fecal incontinence or severe constipation. There are many causes of fecal incontinence. Weak anal sphincter muscles or poor ensation in the rectum can contribute to fecal incontinence. If these abnormalities are present, they can be treated. Biofeedback techniques using anal manometry and special exercises of the pelvic floor muscles can strengthen the muscles and improve sensation. This can help treat fecal incontinence. There are many causes of constipation. Some involve sluggish movement through the whole colon, whereas others involve the anal sphincter muscles. In some patients with constipation, the anal sphincter muscles do not relax appropriately when bearing down or pushing to have a bowel movement. This abnormal muscle function may cause a functional type of obstruction. Muscles that do not relax with bearing down can be retrained with biofeedback techniques using anal manometry. Risks of Anorectal Manometry Anorectal manometry is a safe, low risk procedure and is unlikely to cause any pain. Complications are rare: it is possible that a perforation (tearing) or bleeding of the rectum could occur. Equipment failure is a remote possibility. If you are allergic to latex, you should inform the nurse/technician before the test so that a latex free balloon can be used.

How Many Cups Is 4 Quarts A Conversion Guide

How Many Cups Is 4 Quarts A Conversion Guide SAT / ACT Prep Online Guides and Tips One of the types of questions you’ll see on both the SAT exam and the ACT exam are word problems. You know, situations where you’re given real-world scenarios, and you have to figure out the answer to a particular question based on the data you’re given. It’s common to see conversions in word problems. Conversions ask you to change a value from one form of measurement into another. In today’s article, we’re going to cover one specific type of measurement conversion: imperial volume conversion. Specifically, we’re going to show you how to figure out how many cups are in 4 quarts. (Spoiler alert: 16 cups are in 4 quarts!) We’ll teach you: The math formula for converting cups to quarts How to figure out how many cups is 4 quarts by figuring out the cups to quarts conversion How to read a chart that explains different imperial volume conversions Ready? Let’s dive in! Measurement Systems: Imperial vs Metric Volume measurements like ounces, cups, and quarts are all part of the imperial system of measurement, which is the primary method of measurement used in the United States. (Most of the world uses the metric system.) The metric system uses a base 10 system, meaning each measurement increases by a factor of 10. That’s why it’s so easy to convert in the metric systemall you have to do is move the decimal point left or right depending on the unit. So for example, it’s easy to convert 320 milliliters to centiliters...you just move the decimal point one position to the left. And voila! You’ve converted 320 milliliters to 32 centiliters! Unfortunately, the imperial system doesn’t use a base 10 system, which means conversions are much more confusing. In order to do imperial conversions correctly, you have to either a) memorize the different conversion values or b) use a conversion chart. That’s the most important factor in figuring out our quarts to cups conversion! But don’t worry. We’ve provided you a handy-dandy conversion chart below, and we recommend bookmarking this article so you’ll always have it handy! Quart to Cup Conversion: The Math Formula Okay, now that you understand how tricky conversions can be, let’s walk through one so you can see how to use a conversion chart to convert imperial measurements. Go ahead and scroll down to the chart. Follow the instructions in that section to figure out how many cups are in a quart. Did you do it? Then you know that four cups equals one quart! To write that as a mathematical formula to solve our conversion problem, we need to think about what we now know. We’ve figured out that there are four cups in one quart, which looks like this as a mathematical expression: 1Q = 4C In this case, â€Å"Q† stands for quarts and â€Å"C† stands for cups. (These aren’t variables you need to solve for.) Now all we have to do is work this equation. How Many Cups Is 4 Quarts? Okay, now that you know how to do the math, let’s figure out how many cups are in four quarts! To start off, let’s go back to our equation: 1Q = 4C Now, let’s think about what we know. We know we have four quarts, so we’ll have to multiply the left side of the equation by four to get the right value. But as you’ve learned, you can never change one side of the equation without doing the same thing to the other side. That means you’ll have to multiply the right side by four, too. Here’s what that looks like: 4 * 1Q = 4 * 4C Once we work that out, the final expression looks like this: 4Q = 16C In other words, we now know there are 16 cups in 4 quarts, and you’ve finished your conversion! How to Find Other Conversions Now that you know how to solve questions like â€Å"how many cups is 4 quarts,† you can do the same for any other imperial conversion on our conversion chart. The fundamental steps are always the same: Figure out what value you have and what value you need. Ask yourself, â€Å"what do I know† to find the value you have, and â€Å"what do I need to know† to find the value you need. Check the chart to get the right factor. You’re trying to figure out the 1 to 1 ratio here. So for our equation, it was four cups in 1 quart...but it could be anything! For example, if you wanted to work backward from quarts to cups, you’d have to multiply both sides of the equation by .25 instead. Set up the conversion as an expression. This is where you set the value you have as equal to the value you need. Multiply, multiply, multiply! Multiply both sides by the correct factor. And that’s it! It’s a little more work to do than metric conversions. But once you understand how conversion works, it’s a piece of cake! Volume Conversion Chart Like we mentioned earlier, the easiest way to figure out imperial conversions is to reference an imperial volume conversion chart. That’s why we’ve included a conversion chart here! Here’s how to use it for a quarts to cups conversion: Find the value that you know in the left column. So, if we’re trying to figure out how many cups is 4 quarts, we know how many quarts we have. That means we want to locate â€Å"quarts† in the left column. Now, find the value you want to convert to in the top row. In this case, we want to find â€Å"cups.† Go ahead and try that for yourself below: Tbsp. Cups Pints Quarts Gallons 1 Tbsp. - 1/16 1/32 1/64 1/256 1 Cup 16 - 1/2 1/4 1/16 1 Pint 32 2 - 1/2 1/8 1 Quart 64 4 2 - 1/4 1 Gallon 256 16 8 4 - You’ve now figured out that there are four cups in one quart, which is what you’ll use to solve our particular problem. But now that you have this chart, you can use the method we outlined above to do almost any conversion! What's Next? Conversions are just one type of math problem you might face. Make sure you’re prepared for the test by reading our Ultimate Guide to SAT Math Prep and our Ultimate Guide to ACT Math Prep! If you’re feeling pretty confident, why not test your skills against the 13 hardest SAT Math questions ever? If you can conquer those, you’ll likely do great on the SAT, too! (Here are the hardest math questions on the ACT, too.) If you need a little extra practice, why not check out some math prep books? Here’s a list of our favorites. Have friends who also need help with test prep? Share this article! Tweet Ashley Robinson About the Author Ashley Sufflà © Robinson has a Ph.D. in 19th Century English Literature. As a content writer for PrepScholar, Ashley is passionate about giving college-bound students the in-depth information they need to get into the school of their dreams. Get Free Guides to Boost Your SAT/ACT Get FREE EXCLUSIVE insider tips on how to ACE THE SAT/ACT. 100% Privacy. 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