Past, current, and future hydration status should always be considered when prescribing maintenance fluids, as under-dosing will lead to dehydration and renal insufficiency, and over-dosing may lead to fluid overload and edema in some patients. Intravenous fluid therapy for routine maintenance refers to the provision of IV fluids and electrolytes for patients who cannot meet their needs by oral or enteral routes, yet are otherwise well in terms of fluid and electrolyte balance and handling (i.e. they are essentially euvolaemic with no significant electrolyte deficits, ongoing abnormal losses or complex internal redistribution issues).
Evidence-Based Medicine Consult. Formulas Used: For 0 - 10 kg = weight (kg) x 100 mL/kg/day ; For 10-20 kg = 1000 mL + [weight (kg) x 50 ml/kg/day]. IV Fluids: Choosing Maintenance Fluids. Hospital A/P, Adults, HOSPITAL MEDICINE, Pharmacy and Therapeutics. However, it is thought that 1600 to 2000 mg (40 to 50 milliequivalents [mEq]) per day for adults is adequate.” Mayo Clinic. When a patient is NPO and is on fluids, putting 20 KCL in it will give them about 40-50 per day.
Intravenous (IV) fluid prescribing in adults is something that most doctors do on a daily basis and it’s certainly something you need to understand as a medical student. It can at first glance appear intimidating, but the current NICE guidelines are fairly clear and specific, with a handy algorithm you can follow. This article is based upon those guidelines, with some additional information. Example - 70 kg adult situation: 40 + 20 + 50 = 110 ml/hr estimated fluid maintenance requirement. If NPO for 10 hours without an IV, presurgical fluid deficit is then 1100 ml. This presurgical fluid deficit should be corrected over 2 hours by administering 550 ml/hr of .