Patricia Branco Mills1, Carlen K Fung2, Angelique Travlos3, Andrei Krassioukov4. 1. Division of Physical Medicine and Rehabilitation, University of British Columbia, Vancouver, British Columbia, Canada; Department of Medicine, International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada; GF Strong Rehabilitation Center, Vancouver, British Columbia, Canada; Rehabilitation Research Program, Vancouver Coastal Health Research Institute, Vancouver Coastal Health, Vancouver, British Columbia, Canada. Electronic address: patricia.mills@vch.ca. 2. Division of Physical Medicine and Rehabilitation, University of British Columbia, Vancouver, British Columbia, Canada; Department of Medicine, International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada. 3. Faculty of Arts and Science, Queens University, Vancouver, British Columbia, Canada. 4. Division of Physical Medicine and Rehabilitation, University of British Columbia, Vancouver, British Columbia, Canada; Department of Medicine, International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada; GF Strong Rehabilitation Center, Vancouver, British Columbia, Canada; Rehabilitation Research Program, Vancouver Coastal Health Research Institute, Vancouver Coastal Health, Vancouver, British Columbia, Canada.
Abstract
OBJECTIVE: To systematically review the literature on nonpharmacologic treatment of orthostatic hypotension. DATA SOURCES: MEDLINE, Cumulative Index to Nursing and Allied Health Literature, Embase, Cochrane Central Register of Controlled Trials, and SPORTDiscus were searched for human studies written in the English language between January 1980 and April 2013. Reference lists of relevant articles were reviewed for citations to expand the data set. STUDY SELECTION: Prospective experimental studies assessing nonpharmacologic interventions for management of orthostatic drop in blood pressure in various patient populations were included. All studies identified through the literature search were reviewed independently in duplicate. Of the 642 studies, 23 met the selection criteria. DATA EXTRACTION: Two reviewers independently extracted data for analysis, including systolic and diastolic blood pressure and orthostatic symptoms in response to postural challenge before and after the intervention. All 23 studies were assessed in duplicate for risk of bias using the Physiotherapy Evidence Database scale for randomized controlled trials and the Downs and Black tool for nonrandomized trials. DATA SYNTHESIS: There were 8 identified nonpharmacologic interventions for management of orthostatic hypotension under 2 general categories: physical modalities (exercise, functional electrical stimulation, compression, physical countermaneuvers, compression with physical countermaneuvers, sleeping with head up) and dietary measures (water intake, meals). Owing to the clinically diverse nature of the studies, statistical comparison (meta-analysis) was deemed inappropriate. Instead, descriptive comparisons were drawn. Levels of evidence were assigned. CONCLUSIONS: Strong levels of evidence were found for 4 of the 8 interventions: functional electrical stimulation in spinal cord injury, compression of the legs and/or abdomen, physical countermaneuvers in various patient populations, and eating smaller and more frequent meals in chronic autonomic failure. However, this conclusion is based on a limited number of studies with small sample sizes. Further research into all interventions is warranted.
OBJECTIVE: To systematically review the literature on nonpharmacologic treatment of orthostatic hypotension. DATA SOURCES: MEDLINE, Cumulative Index to Nursing and Allied Health Literature, Embase, Cochrane Central Register of Controlled Trials, and SPORTDiscus were searched for human studies written in the English language between January 1980 and April 2013. Reference lists of relevant articles were reviewed for citations to expand the data set. STUDY SELECTION: Prospective experimental studies assessing nonpharmacologic interventions for management of orthostatic drop in blood pressure in various patient populations were included. All studies identified through the literature search were reviewed independently in duplicate. Of the 642 studies, 23 met the selection criteria. DATA EXTRACTION: Two reviewers independently extracted data for analysis, including systolic and diastolic blood pressure and orthostatic symptoms in response to postural challenge before and after the intervention. All 23 studies were assessed in duplicate for risk of bias using the Physiotherapy Evidence Database scale for randomized controlled trials and the Downs and Black tool for nonrandomized trials. DATA SYNTHESIS: There were 8 identified nonpharmacologic interventions for management of orthostatic hypotension under 2 general categories: physical modalities (exercise, functional electrical stimulation, compression, physical countermaneuvers, compression with physical countermaneuvers, sleeping with head up) and dietary measures (water intake, meals). Owing to the clinically diverse nature of the studies, statistical comparison (meta-analysis) was deemed inappropriate. Instead, descriptive comparisons were drawn. Levels of evidence were assigned. CONCLUSIONS: Strong levels of evidence were found for 4 of the 8 interventions: functional electrical stimulation in spinal cord injury, compression of the legs and/or abdomen, physical countermaneuvers in various patient populations, and eating smaller and more frequent meals in chronic autonomic failure. However, this conclusion is based on a limited number of studies with small sample sizes. Further research into all interventions is warranted.
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