Educational material for maintaining good drug infusion practices
Copyright 2018 - MGH
Syringe Infusion Pumps – Operation and Safety Considerations
Syringe infusion pumps play an important role in the delivery of medication. They have distinct benefits for neonate, pediatric and adult patient groups. However, as with any sophisticated device there are some important considerations to keep in mind as we continue to use them to provide excellent care. This two part series will discuss how syringe infusion pumps operate and how the nuances of this mechanism can have clinical implications. Each module is intended to bring knowledge and awareness of some topics we need to remain mindful of, so we know what to expect and how best to respond in certain situations. These modules also aim to provide guidance for helping prevent or mitigate certain elements of syringe infusion pump operation that can result in undesirable clinical responses.
When multiple fluid paths converge into a single IV line their flow can become dynamically linked. In these situations, flow rate changes to any one infusion will influence the delivery of all the infusions. Dead volume is the common volume, shared by multiple fluids when they join together, creating a single pathway to the patient’s bloodstream. Interactions within the dead volume can lead to unintended boluses, delays, and variations in the delivery rate of potent drugs, resulting in unintended clinical consequences for patients. This two part series will introduce the topic of dead volume, the implications of dead volume on the infusion setup, and some steps that can be taken to help manage the dead volume.
Drug Administration & Mixing Decisions
The use of a select number of standardized drug concentrations and dose strengths for high-alert medications is a requirement for all accredited hospitals. However, making the optimal choices when selecting from these standardized drug concentrations and administering them can require us to be aware of several important considerations. It is not always a straight forward task. This module aims to provide some guidance, and tools, to assist in the decision making process of selecting, mixing, and programming standardized, continuous infusions. This includes making the decision of whether a syringe infusion pump or large volume pump may provide the optimal delivery mechanism. The delivery of continuous, rate-critical infusions that will run for many hours to days, and may be frequently adjusted, or titrated, during that time will be the focus of this module.
A secondary infusion, also called a piggyback infusion, involves the delivery of an intermittent (or single-dose) IV medication through an established IV access. Delivery is set up in a very specific way in order to administer the secondary medication and, upon completion, automatically change back to administering the primary IV fluid. The delivery of secondary infusions is a common drug administration practice, but in order to ensure the medication is being delivered as intended there are several key setup conditions that need to be met. This module aims to provide a very brief introduction to 3 key principles for ensuring secondary infusions are delivered as expected: the height difference, role of a back-check valve, and secondary roller clamp.
The module also talks about the practice of back priming. Back priming is used when chemotherapy or hazardous drugs are provided with a secondary IV tubing set that has been spiked, but not primed.
The material presented in this module includes content developed by Massachusetts General Hospital and the HumanEra group of Toronto’s University Health Network.