![]() Note that these figures are the average for a 70kg man. Table 1 – Guide to the sources of fluid input and output *After some operations, patients are deliberately run “on the dry side”, whilst septic patients or patients in bowel obstruction will need aggressive fluid prescribing. What were their most recent electrolytes?.What is their underlying reason for admission*?.Are there any co-morbidities present that are important to consider, such as heart failure or chronic kidney disease?.The fluid requirements of a frail 45kg 80yr female and a healthy 100kg 40yr male will be significantly different.What is the weight and size of the patient?.Is the aim of the fluid for resuscitation, maintenance, or replacement?. ![]() The general key considerations to remember with every patient are: Perhaps the most important point to remember therefore is that correct fluid prescription varies depending on the individual patient and it is essential to take individual patient characteristics into account before prescribing fluid. ![]() The relative importance of each of these varies between patients. Introductionįirstly it’s important to think about why fluids should be prescribed in the first place. *Please be aware that this article talks solely about adult fluids and does not cover paediatric prescribing. Fluid management is a major part of junior doctor prescribing whether working on a surgical firm with a patient who is nil-by-mouth or with a dehydrated patient on a care of the elderly firm, this is a topic that a junior doctor utilises on a regular basis.Įnsuring considered fluid and haemodynamic management is central to peri-operative patient care and has been shown to have a significant impact on post-operative morbidity and the length of hospital stay. Hence it is essential to gain a firm understanding of the physiology of fluid balance and the compositions of each fluid being prescribed.
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