CRYSTALLOIDS OR COLLOIDS… WHATS IN YOUR IV
13-Dec-2019 Determining Fluid Type for. Septic Shock Resuscitation. JMU Scholarly Commons Physician Assistant Capstones. https://commons.lib.jmu.edu/ ...
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Choosing between colloids and crystalloids for IV infusion
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robust evidence uncertainty exists regarding the type of fluid
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Different types of trauma can require different types of fluids and blunt trauma colloids
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18-Dec-2001 for both classes of fluid. The available colloid solutions have quite distinct profiles of activity both in terms of their plasma volume ...
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these classes appropriate treatment can be planned. Crystalloids
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from 2009 --“Colloids vs Crystalloids for fluid resuscitation in of IV fluids rapidly & targeting appropriate goals are more important than the type.
Choices in fluid type and volume during resuscitation: impact on
Hydroxyethyl starch use has been associated with increased acute kidney injury (AKI) and use of renal replacement therapy. Other synthetic colloids (dextran and
Searches related to types of colloids for fluid resuscitation PDF
resuscitation routine maintenance replacement redistribution and reassessment Crystalloids and colloids both plasma volume expanders are used to increase depleted circulating volumes To administer intravenous fluids health professionals must understand what crystalloids and colloids do and when to use them To
What is the difference between fluid resuscitation crystalloids and colloids?
Home > UCSF Hospitalist Handbook > 04. Critical Care > 13. Fluid Resuscitation 13. Fluid Resuscitation Crystalloids: IV fluids composed of water and electrolytes. Colloids: IV fluids composed with larger macromolecules or particles that are relatively membrane-impermeable (e.g., albumin, red blood cell substitutes, Hextend/hetastarch).
What is the most commonly used crystalloid fluid?
While normal saline (0.9% NaCl solution) is the most frequently used crystalloid fluid, many other formulations can provide improved clinical outcomes in specific patient populations. Other commercially available crystalloid fluids include: Lactated Ringer's/Hartman's solution (lactate buffered solution)
Which crystalloid is preferred over NS resuscitation?
Balanced fluids (LR or Plasma-Lyte) are the preferred crystalloid over NS given reduced mortality and RRT. After initial fluid resuscitation, additional fluid needs are determined based on clinical response using capillary refill rate, BP response, PPV, UOP and other dynamic assessments of fluid responsiveness.
What is a colloid solution?
Colloid solutions are suspensions of molecules within a carrier solution that are relatively incapable of crossing the healthy semipermeable capillary membrane owing to the molecular weight of the molecules.
Copyright EMAP Publishing 2017
This article is not for distribution
20Nursing Times [online]
December 2017
/ Vol 113 Issue 12 www.nursingtimes.netKeywords Fluid resuscitation/'5Rs'/
Crystalloids/Colloids
This article has been
double-blind peer reviewed T o maintain its finely tuned homoeostasis, the human adult body needs an average daily fluid intake of 2.5-3 litres (Moore andCunningham, 2017). It also requires a con
stant balance in the levels of nutrients, oxygen and water to preserve a stable internal environment (Moini, 2016). This balance can be easily altered by illness or injury, resulting in a loss of one or all of these elements. This can lead to dehydra tion, hypoperfusion leading to reduced oxygen uptake, and organ dysfunction, so redressing the imbalance is essential.A reduction in oral fluid intake, the
redistribution of fluid in the vascular spaces and a decreased circulating volume need to be managed. Intravenous fluid therapy is one way of managing reduced fluid intake by reducing its effects and replacing lost fluids.Recognising the signs and symptoms of
fluid loss is necessary to identify the need for fluid administration. Knowledge of when to administer IV fluids, what type of fluid to administer, and why they are all Key pointsThe loss of
circulating fluid volume can lead to imbalances in homoeostasisRecognising,
assessing and monitoring patients' need for fluid therapy is crucialThe '5Rs' of
intravenous fluid administration are: resuscitation, routine maintenance, replacement, redistribution and reassessmentCrystalloids and
colloids, both plasma volume expanders, are used to increase depleted circulating volumesTo administer
intravenous fluids, health professionals must understand what crystalloids and colloids do and when to use them essential. The National Institute for Health and Care Excellence's (2017) guidance on IV fluid therapy in adults in hospital stresses the need for health professionals to under stand the physiology of fluid and electro- lyte balance. It also outlines five 'Rs' of fluid administration (Box 1). However, there are many fluid replacement products available and it is not always clear which one should be used.This article provides an overview of the
NICE guidance, highlighting what it
means for health professionals adminis- tering IV fluids. It also sheds light on the differences between crystalloid and colloid solutions, and gives practical guidance on when each one should be used.Physiology
For effective tissue and organ perfusion,
maintenance of finely balanced levels of oxygen, fluid and electrolytes (homoeo stasis) is essential. Fluid volumes need to be distributed into the intracellular and extracellular spaces (the latter being fur ther divided into the interstitial and Choosing between colloids and crystalloids for IV infusionAuthor
Lisa Smith is senior lecturer in emergency and urgent care at the University of Cumbria.Abstract
Hypovolaemia resulting from illness or trauma can precipitate imbalances in homoeostasis due to the loss of circulating fluid volume. By addressing hypovolaemia, homoeostasis can be restored, preventing hypoperfusion and subsequent organ dysfunction. Administering intravenous fluids can replace any lost circulating volume. The National Institute for Health and Care Excellence outlines five 'Rs' of fluid therapy: resuscitation, routine maintenance, replacement, redistribution and reassessment. This article provides an overview of fluid therapy, covering the NICE guidance and clarifying the di?erences between crystalloids and colloids, and when to use them.Citation
Smith L (2017) Choosing between colloids and crystalloids for IV infusion.Nursing Times
[online]; 113: 12, 20-23.In this article...Guidance on intravenous fluid therapy
Parameters that may indicate the need for fluid resuscitation Compared risks and benefits of colloids and crystalloidsNursing Practice
Review
Intravenous therapy
Copyright EMAP Publishing 2017
This article is not for distribution
21Nursing Times [online]
December 2017
/ Vol 113 Issue 12 www.nursingtimes.net affect patients' cardiac performance causing arrhythmias, heart failure and/or cardiac arrest. If continued fluid loss is suspected, this should be checked and losses monitored.Redistribution
Redistribution of fluid can occur in critical
illness. Fluid is lost from the circulatory volume and moves into the tissues; this is called 'third space loss' (Frost, 2015). This may be seen in patients with cardiac failure, renal failure or sepsis, and oedema may be present. To manage these patients effectively, increased monitoring, further assessment and investigations are needed.In some cases, specialist intervention,
such as the monitoring of central venous pressure, kidney function tests or high dependency care, may be required.Reassessment
Regular reassessment of patients' fluid
therapy needs is essential. In those who require ongoing fluid therapy for three or more days, the enteral routes of adminis tration should be considered (NICE, 2017).Enteral routes reduce the need for IV access
and, in doing so, reduce the risks of ongoing IV therapy, such as catheter- related infections.Types of fluids
Crystalloids
Crystalloid solutions are isotonic plasma
volume expanders that contain electro lytes. They can increase the circulatory volume without altering the chemical bal ance in the vascular spaces. This is due to their isotonic properties, meaning their components are close to those of blood circulating in the body.Crystalloid solutions are mainly used to
increase the intravascular volume when it is reduced. This reduction could be caused by haemorrhage, dehydration or loss of fluid during surgery. cause of any potential fluid loss. Finding and treating that cause, along with the administration of fluid therapy, is essential to rule out refractory fluid loss. If not addressed, this persistent loss of circulating volume could lead to:The need for further fluid resuscitation;
Increased volumes of fluid
requirements;In severe cases, debilitating illness
or death.NICE (2017) recommends a bolus of
500ml of crystalloid solution (containing
sodium in the range of 130-154mmol/L) over less than 15 minutes in patients requiring fluid resuscitation; this should be avoided for those who have any evi dence of pulmonary oedema as a result of cardiac failure (Frost, 2015). This initial fluid resuscitation should be followed by a reassessment. If further fluid resuscitation is required, then fluid boluses of 250-500ml should be given. Patients needing
continuous boluses of up to 2L will need further medical review.Routine maintenance
Routine maintenance fluids are needed in
patients who are at ongoing risk of fluid loss. Reasons for this could be poor fluid intake, recent surgery, bowel dysfunction and other comorbidities. Clinical exami nation, investigations, vital signs monitoring (including fluid balance and weight measurements) can all help to determine a patient's need for routine maintenance fluids.Replacement
Ongoing assessment of patients' fluid bal
ance is paramount. Assessment should focus on:Ensuring adequate hydration;
Ensuring electrolyte balance;
Checking for any potential fluid overload. When ensuring normal electrolyte parameters are met, it is particularly important to consider the potassium levels. Alterations in potassium - either hypokalaemia or hyperkalaemia - can intravascular compartments). The move ment of fluid between these spaces is con- tinual. This enables cells to receive their necessary supply of electrolytes such as sodium, potassium and carbon. Along with oxygen, these are fundamental for cell performance (Peate and Nair, 2016).Homoeostasis is easily affected by any
insult to the body, be it from illness, injury, trauma or medication. This imbalance can quickly lead to worsening illness and/or impede recovery. Hypovolaemia will reduce the circulating fluid volumes, resulting in reduced electrolyte and oxygen supply to the cells. A large reduc tion in fluid volume can result in hypovol- aemic shock. Patients who go into hypo- volaemic shock need fluid resuscitation to maintain their cardiac output and organ perfusion.NICE guidance
NICE's (2017) guidance on IV fluid therapy
indicates that the assessment of patients should include:Physical examination;
Observation of vital signs over time;
Clinical presentation.
It also provides a set of parameters that
may indicate that a patient needs fluid resuscitation (Box 2).The parameters highlight the impor
tance of assessing patients' fluid and elec- trolyte balance. This involves ascertaining their history of fluid intake and any com plaints of thirst. Consideration should also be given to the likelihood of insensible fluid loss - for example, from altered bowel function such as diarrhoea, or injuries such as burns. Comorbidities such as dia betes and cardiovascular disease can also lead to fluid and electrolyte imbalances.The monitoring of vital signs, along
with the assessment of jugular venous pressure and observation for possible oedema and postural hypotension, can help identify abnormalities in patients' fluid and electrolyte balance. The NationalEarly Warning Score (NEWS) and fluid bal
ance and weight charts are essential tools.Additional tests such as full blood count
and urea and electrolytes can confirm the need for IV fluid therapy (NICE, 2017).The '5Rs' of fluid resuscitation
Resuscitation
To ascertain the fluid requirements of
patients who are acutely ill, an accurate assessment is needed and should include the ABCDE - airway, breathing, circulation, disability, exposure - approach (Frost,2015). It is also important to investigate the
Nursing Practice
Review
Box 1.
Five 'Rs' of intravenous fluid administration
Resuscitation
Routine maintenance
Replacement
Redistribution
Reassessment
Source: National Institute for Health and Care
Excellence (2017)
Box 2.
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