1
|
Peach M, Milne J, Diegelmann L, Lamprecht H, Stander M, Lussier D, Pham C, Henneberry R, Fraser J, Chandra K, Howlett M, Mekwan J, Ramrattan B, Middleton J, van Hoving N, Taylor L, Dahn T, Hurley S, MacSween K, Richardson L, Stoica G, Hunter S, Olszynski P, Chandra K, Lewis D, Atkinson P. Does point-of-care ultrasonography improve diagnostic accuracy in emergency department patients with undifferentiated hypotension? An international randomized controlled trial from the SHOC-ED investigators. CAN J EMERG MED 2023; 25:48-56. [PMID: 36577931 DOI: 10.1007/s43678-022-00431-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 11/30/2022] [Indexed: 12/29/2022]
Abstract
PURPOSE Point-of-care ultrasonography (POCUS) is an established tool in the management of hypotensive patients in the emergency department (ED). We compared the diagnostic accuracy of a POCUS protocol versus standard assessment without POCUS in patients with undifferentiated hypotension. METHODS This was an international, multicenter randomized controlled trial included three EDs in North America and three in South Africa from September 2012 to December 2016. Hypotensive patients were randomized to early POCUS protocol plus standard care (POCUS group) or standard care without POCUS (control group). Initial and secondary diagnoses were recorded at 0 and 60 min. The main outcome was measures of diagnostic accuracy of a POCUS protocol in differentiating between cardiogenic and non-cardiogenic shock. Secondary outcomes were diagnostic performance for shock sub-types, as well as changes in perceived category of shock and overall diagnosis. RESULTS Follow-up was completed for 270 of 273 patients. For cardiogenic shock, the POCUS-based diagnostic approach (POCUS) performed similarly to the non-POCUS approach (control) for specificity [95.5% (89.9-98.5) vs.93.8% (87.7-97.5)]; positive likelihood ratio (17.92 vs 14.80); negative likelihood ratio (0.21 vs 0.09) and diagnostic odds ratio (85.6 vs 166.57), with a similar overall diagnostic accuracy between the two approaches [93.7% (88-97.2) vs 93.6% (87.8-97.2)]. Diagnostic performance measures were similar across sub-categories of shock. CONCLUSION This is the first randomized controlled trial to compare diagnostic performance of a POCUS protocol to standard care without POCUS in undifferentiated hypotensive ED patients. POCUS performed well diagnostically in undifferentiated hypotensive patients, especially as a rule-in test; however, performance did not differ meaningfully from standard assessment.
Collapse
Affiliation(s)
- M Peach
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - J Milne
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- Fraser Health Authority, Vancouver, BC, Canada
| | - L Diegelmann
- Division of Emergency Medicine, University of Stellenbosch, Cape Town, South Africa
- Department of Emergency Medicine, University of Maryland Medical Center, Baltimore, USA
| | - H Lamprecht
- Division of Emergency Medicine, University of Stellenbosch, Cape Town, South Africa
| | - M Stander
- Division of Emergency Medicine, University of Stellenbosch, Cape Town, South Africa
| | - D Lussier
- Department of Emergency Medicine, Health Sciences Centre, University of Manitoba, Winnipeg, MB, Canada
| | - C Pham
- Department of Emergency Medicine, Health Sciences Centre, University of Manitoba, Winnipeg, MB, Canada
| | - R Henneberry
- Department of Emergency Medicine, Dalhousie University, QEII, Halifax, NS, Canada
| | - J Fraser
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
| | - K Chandra
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- Discipline of Emergency Medicine, Memorial University, Saint John, NL, Canada
| | - M Howlett
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- Discipline of Emergency Medicine, Memorial University, Saint John, NL, Canada
| | - J Mekwan
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- Discipline of Emergency Medicine, Memorial University, Saint John, NL, Canada
| | - B Ramrattan
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- Discipline of Emergency Medicine, Memorial University, Saint John, NL, Canada
| | - J Middleton
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- Discipline of Emergency Medicine, Memorial University, Saint John, NL, Canada
| | - N van Hoving
- Division of Emergency Medicine, University of Stellenbosch, Cape Town, South Africa
| | - L Taylor
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
| | - T Dahn
- Department of Emergency Medicine, Dalhousie University, QEII, Halifax, NS, Canada
| | - S Hurley
- Department of Emergency Medicine, Dalhousie University, QEII, Halifax, NS, Canada
| | - K MacSween
- Department of Emergency Medicine, Dalhousie University, QEII, Halifax, NS, Canada
| | - L Richardson
- Department of Emergency Medicine, Dalhousie University, QEII, Halifax, NS, Canada
| | - G Stoica
- Research Services, Horizon Health Network, Saint John, NB, Canada
| | - Samuel Hunter
- Faculty of Science, University of Ottawa, Ottawa, ON, Canada
| | - P Olszynski
- Department of Emergency Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, SK, Canada
| | - K Chandra
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- Discipline of Emergency Medicine, Memorial University, Saint John, NL, Canada
| | - D Lewis
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada
- Discipline of Emergency Medicine, Memorial University, Saint John, NL, Canada
| | - P Atkinson
- Department of Emergency Medicine, Dalhousie University, Horizon Health Network, Saint John Regional Hospital, 400 University Ave, Saint John, NB, NB E2L 4L2, Canada.
- Dalhousie Medicine New Brunswick, Saint John, NB, Canada.
- Discipline of Emergency Medicine, Memorial University, Saint John, NL, Canada.
| |
Collapse
|