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However, initial OH, a transient blood pressure that decreases immediately after standing, is often unrecognized, and the interactions among OH, SH, and anti-hypertensive therapy remain unclear.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This single-centre retrospective observational study included 183 patients with PD who underwent an active supine-to-stand test with beat-to-beat blood pressure monitoring. Logistic regression was used to identify factors associated with OH and SH, and linear regression was performed to examine the determinants of postural blood pressure decline and changes in cerebral haemodynamics.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      OH occurred in 72.1% of patients, including 27.9% with symptomatic OH; SH was present in 21.9%. Female sex (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u20090.013) and anti-hypertensive therapy (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u20090.026) were associated with lower odds of OH. Older age (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u20090.017), arterial hypertension (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u20090.002), and a high Hoehn and Yahr stage (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u20090.006) were associated with higher odds of SH (AUC 0.80). Increased supine systolic and diastolic blood pressure were associated with increased postural decline (\u03b2\u2009=\u20090.40,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009&lt;\u20090.001; \u03b2\u2009=\u20090.31,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u20090.001), whereas anti-hypertensive therapy was associated with decreased postural decline. Among patients with complete middle cerebral artery monitoring data, changes in the pulsatility index were correlated with reductions in cerebral blood flow velocity (\u03b2\u2009=\u2009\u221211.24;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u20090.002).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>This study comprehensively characterized the prevalence and determinants of OH and SH in patients with PD. SH was associated with greater decreases in postural blood pressure, whereas anti-hypertensive therapy was associated with smaller decreases. Pulsatility index variation may serve as a physiological marker of cerebral haemodynamic adaptation during an orthostatic challenge.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Plain language summary title<\/jats:title>\n                    <jats:p>Understanding Blood Pressure Changes in People with Parkinson's Disease<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/1877718x261457798","type":"journal-article","created":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T12:42:57Z","timestamp":1780576977000},"page":"1250-1262","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Prevalence and related factors of blood pressure regulation abnormalities in Parkinson's disease: Orthostatic hypotension and supine hypertension"],"prefix":"10.1177","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-0334-2451","authenticated-orcid":false,"given":"Jinyu","family":"Jia","sequence":"first","affiliation":[{"name":"Jinan University First Affiliated Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-1266-8354","authenticated-orcid":false,"given":"Jianmin","family":"Zeng","sequence":"additional","affiliation":[{"name":"Jinan University First Affiliated Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-4362-4470","authenticated-orcid":false,"given":"Yifan","family":"Gong","sequence":"additional","affiliation":[{"name":"Jinan University First Affiliated Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-0190-8786","authenticated-orcid":false,"given":"Huan","family":"Zhou","sequence":"additional","affiliation":[{"name":"Jinan University First Affiliated Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-7742-9250","authenticated-orcid":false,"given":"Xiuli","family":"Zeng","sequence":"additional","affiliation":[{"name":"Jinan University First Affiliated Hospital"},{"name":"State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), Harbin Medical University, Harbin, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1755-5224","authenticated-orcid":false,"given":"Jing","family":"Zou","sequence":"additional","affiliation":[{"name":"Jinan University First Affiliated Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,6,4]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(14)61393-3"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.parkreldis.2011.04.016"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1002\/mds.26079"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.HYP.0000081216.11623.C3"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1001\/archneur.57.10.1461"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jns.2017.12.037"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.0000000000008314"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1093\/eurheartj\/ehy037"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10286-011-0146-2"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10286-024-01026-3"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41531-021-00214-6"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.parkreldis.2020.04.011"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.autneu.2013.08.064"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.1997.03540400049030"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.7326\/M20-4298"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10286-006-0317-8"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1111\/joim.12636"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.STR.19.7.915"},{"key":"e_1_3_2_20_2","first-page":"20","article-title":"Prevalence and incidence of orthostatic hypotension in patients with Parkinson's disease: an updated systematic review and meta-analysis","volume":"17","author":"Wang LJ","year":"2026","unstructured":"Wang LJ, Su XX, Zhu P, et al. 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