By convention, this means there are 5 g of the drug in every 100 ml. Some questions might give you a concentration in the form of a percentage – for example, a patient is given a 5% solution of a drug. You can set up an equation where X is the volume of the solution you are trying to find: You need to give 50 mg and therefore need to find out what volume contains 50 mg. The question states there is 100 mg in 2 ml. Therefore you need to give a total dose of 50 mg. So the patient weighs 50 kg and you need to give 1 mg per kg. What volume of the solution in the syringe do you need to give? You are asked to give a patient weighing 50 kg a 1 mg/kg IV injection. One way to tackle these types of questions is to set up a simple equation where X is the variable you are trying to find. Some drug calculations might involve working out the volume of solution needed to give the required dose of a drug. You need to move the decimal point six places if you move through two units (e.g from milligrams to nanograms). from grams to kilograms) and three places to the right every time you move down a unit (e.g from grams to milligrams). The decimal point moves three places to the left for every unit you move up (e.g. You may find it helpful to write out the number with a decimal point after it. How many milligrams is this?Ī: 1 g = 1000 mg Drug Calculations Summary Table Unit You prescribe a patient 1 g of paracetamol. In clinical practice, one of the most useful types of calculations to know is converting between units. This blog will take you through some of the more clinically useful calculations that could come up. Whether you are allowed to use a calculator or not depends on the Medical School. There will be a number of stages in the calculations and to establish the order in which these are performed is important too.” The sophistication of each task is to recognise which piece or pieces of data need to be manipulated at a particular stage and to determine the precise mathematical approach that needs to be applied. The mathematical skills that are being tested are at GCSE level and below. “You will be asked to undertake simple mathematical calculations involving data that has clinical relevance. All of the questions are based on the sort of calculations doctors do every day using basic maths skills.”īirmingham says this about their calculation station, which is completed on a separate day from the rest of your online interview: There are no trick questions and the answers are all realistic. Those who qualify for the UKCAT special educational needs test will be given extra time on the day. “The clinical maths test consists of 20 maths questions to be completed in 30 minutes. Questions “will all be related to clinical scenarios, although no clinical knowledge is required to answer the questions.” Keele also gives more information about what you can expect during the admissions maths test: Medicine are able to undertake the type of calculation needed.” Therefore we have introduced a maths test to ensure that students accepted to study Incorrect calculations can have very serious consequences for patient safety. “It is very important that doctors are able to use simple maths to solve problems during their Keele University‘s rationale for assessing calculation skills is as follows:
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