Portable ultrasound devices in the pre-hospital setting a review of clinical and cost-effectiveness and guidelines

Portable US is primarily used for diagnostic purposes, but therapeutic uses (e.g., US guided pericardiocentesis) have been documented. They have shown value in the context of limited resources and expertise such as rural or remote settings where treatment may be improved by transmitting images to ce...

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Bibliographic Details
Corporate Authors: Canadian Agency for Drugs and Technologies in Health, Canadian Agency for Drugs and Technologies in Health Rapid Response Service
Format: eBook
Language:English
Published: [Ottowa, Ont.] CADTH Rapid Response Service 2015, 29 May 2015
Series:Rapid response report: summary with critical appraisal
Subjects:
Online Access:
Collection: National Center for Biotechnology Information - Collection details see MPG.ReNa
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653 |a Point-of-Care Testing 
653 |a Comparative Effectiveness Research 
653 |a Cost-Benefit Analysis 
653 |a Ultrasonography / instrumentation 
653 |a Emergency Treatment 
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520 |a Portable US is primarily used for diagnostic purposes, but therapeutic uses (e.g., US guided pericardiocentesis) have been documented. They have shown value in the context of limited resources and expertise such as rural or remote settings where treatment may be improved by transmitting images to central sites. Another out-of-hospital context that portable US has shown potential for is the pre-hospital setting. Proposed benefits of using portable US in the pre-hospital setting include support in determining the appropriate method of transportation and patient destination (i.e., level of facility), prevention of unnecessary field interventions (e.g., needle thoracostomy for patients with suspected pneumothorax), provision of necessary time-sensitive pharmaceutical treatments (e.g., as may be required by patients with congestive heart failure), and increased efficiency of care of the critically ill.  
520 |a In North America, portable US use has been reported for FAST, pulseless electrical activity arrest, cardiac tamponade, to detect aortic aneurysm, examine for pneumothorax, use for vascular access, assess volume status, or to identify fractures. Diagnostic accuracy, reliability, and feasibility of portable US has been well demonstrated in the out-of-hospital setting. Despite the proposed utility of these devices, only 4.1% of emergency medical services directors surveyed in Canada and the United States (30% response rate) reported using portable US in the pre-hospital setting. Of the respondents, 21.7% stated that they would consider implementing the technology. Major barriers to adoption include cost, training requirements, and lack of evidence for improvement in patient-related outcomes (e.g., morbidity and mortality).  
520 |a Emergency physicians often rely on technology such as portable ultrasound (US) to assist in decision making when treating patients in critical condition. Portable US devices, also referred to as point-of-care US (POCUS), mobile US, bedside US, and encompassing specific procedures such as focused-assessment with sonography for trauma (FAST), comprise a range of technologies including handheld devices, conventional mobile bedside devices and other devices with mobility. Examples include PRIMEDIC HandyScan, V-scan (GE Healthcare), and SonoSite devices. Portable US devices are lauded for being lightweight, small, and durable, and for providing high quality, high-resolution imaging at a lower cost than conventional US. Their application in emergency medicine is widespread as the operation of US is non-invasive, inexpensive and not associated with radiation exposure.  
520 |a In light of the perceived potential clinical benefit of pre-hospital US but the lack of direct evidence and presence of other factors, such as cost, impeding their use, the purpose of this review is to review the relationship between the use of portable US in the pre-hospital setting and definitive patient outcomes and resource implications, as well as guidance regarding their use