RESUMO
Objective: The aim of this study was to compare the hemodynamic effects of manual spinal manipulation (MSM) and instrumental spinal manipulation (ISM) on the vertebral artery (VA) and internal carotid artery (ICA) in participants with chronic nonspecific neck pain (NNP). Methods: Thirty volunteers aged 20 to 40 years old with NNP over 3 months duration were included. Participants were randomly divided into the following 2 groups: (1) MSM group (n = 15) and (2) ISM group (n = 15). Ipsilateral (intervention side) and contralateral (opposite side of intervention) VAs and ICAs were evaluated using spectral color Doppler ultrasound before and immediately after manipulation. Measurements were recorded by visualizing the ICA carotid sinus (C4 level) and the VA at the V3 segment (C1-C2 level). The blood flow parameters of peak systolic velocity (PSV), end-diastolic velocity, resistive index, and volume flow (only for VA) were evaluated. The spinal segment, in which biomechanical aberrant movement was detected by palpation in the upper cervical spine, was manually manipulated in the MSM group. The same methodology was performed for the ISM group using an Activator V instrument (Activator Methods). Results: Intragroup analysis exhibited no statistically significant difference between the MSM and ISM groups in terms of PSV, end-diastolic velocity, resistive index of ipsilateral and contralateral ICA and VA, in addition to volume flow of both VAs preintervention and postintervention (P > .05). Within the intergroup analysis, there was a significant difference in ipsilateral ICA PSV (P = .031) (preintervention vs postintervention difference was -7.9 ± 17.2 cm/s [95% confidence interval, -17.4 to 1.6] in the ISM group and 8.7 ± 22.5 cm/s [95% confidence interval, -3.6 to 21.2]) in the MSM group (P < .05). Other parameters did not show any significant difference (P > .05). Conclusion: Manual and instrumental spinal manipulations applied to the upper cervical spine in participants with chronic NNP did not appear to alter blood flow parameters of the VAs and ICAs.
RESUMO
OBJECTIVE: The coronavirus disease-2019 (COVID-19) pandemic has strained all levels of healthcare and it is not known how chiropractic practitioners have responded to this crisis. The purpose of this report is to describe responses by a sample of chiropractors during the early stages of the COVID-19 pandemic. METHODS: We used a qualitative-constructivist design to understand chiropractic practice during the COVID-19 pandemic, as described by the participants. A sample of chiropractic practitioners (doctors of chiropractic, chiropractors) from various international locations were invited to participate. Each described the public health response to COVID-19 in their location and the actions that they took in their chiropractic practices from April 20 through May 4, 2020. A summary report was created from their responses and common themes were identified. RESULTS: Eighteen chiropractic practitioners representing 17 locations and 11 countries participated. A variety of practice environments were represented in this sample, including, solo practice, mobile practice, private hospital, US Veterans Administration health care, worksite health center, and group practice. They reported that they recognized and abided by changing governmental regulations. They observed their patients experience increased stress and mental health concerns resulting from the pandemic. They adopted innovative strategies, such as telehealth, to do outreach, communicate with, and provide care for patients. They abided by national and World Health Organization recommendations and they adopted creative strategies to maintain connectivity with patients through a people-centered, integrated, and collaborative approach. CONCLUSION: Although the chiropractors in this sample practiced in different cities and countries, their compliance with local regulations, concern for staff and patient safety, and people-centered responses were consistent. This sample covers all 7 World Federation of Chiropractic regions (ie, African, Asian, Eastern Mediterranean, European, Latin American, North American, and Pacific) and provides insights into measures taken by chiropractors during the early stages of the COVID-19 pandemic. This information may assist the chiropractic profession as it prepares for different scenarios as new evidence about this disease evolves.
