Be sure to select the equivalents with the same terms as your problem (e.g., mg to g), and place the unknown on the right side of the equation in the same order as shown below.įollow the same procedures as in Chapter 2 for ratio and proportion. Place the known metric equivalents from the metric tables on the left. There are two types of metric one-step calculations: metric equivalent problems and metric dose problems. It can be used to calculate metric equivalents and medication doses with accuracy and logic. Ratio and proportion is a provable method of solving medication calculation problems. One-Step Metric Ratio and Proportion Calculations Use a syringe with the appropriate calibrations to measure an exact dose. If the answer is 1.7 mL, DO NOT round up to 2 mL. To avoid overdosing the patient, never round up liquid medications to the nearest whole number. Round to the nearest measurable calibration on the equipment you are using. Download Citation Magnetocardiogram measured by fundamental mode orthogonal fluxgate array Magnetocardiography (MCG) of healthy volunteers has been measured by using a fundamental mode. These should be memorized and are as follows: There are a few equivalents used frequently in medicine. Table 4-1 illustrates the relationships and values within the metric system. The basic units are multiplied and divided by a multiple of 10 to form the entire system. It is the preferred system for medication administration. The metric system is the preferred system for weights, volume, and lengths and is used in computers. SI is the abbreviation for the French Système International d’Unités. The International System of Units (SI), which is commonly known as the metric system, is now being used exclusively in the United States Pharmacopeia. Mastery of this chapter will provide the reader with an excellent foundation for all drug dose calculations. This chapter teaches the application of basic mathematics, ratio and proportion, nursing process and critical thinking used in safe medication preparation. Medications are ordered and supplied primarily in the metric system of measurement. Analyze medication errors using critical thinking.Distinguish unit and milliequivalent labels.Identify one- and two-step metric conversion problems.Identify metric and household liquid equivalents.Round medication doses to the nearest measurable amount.The volume or mass that makes up one International unit is dependent on the concentration or potency of the substance and therefore varies from substance to substance depending on what is being measured. Calculate gram and milligram conversion problems. IU stands for International units and is a unit commonly used in the measurement of medications, vaccines and vitamins.Memorize milliliter and liter conversions. Convert milligrams, micrograms, grams, and kilograms.
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