Afshin A Divani1, Xi Liu2, Alexander Petersen2, Simona Lattanzi3, Craig S Anderson4,5,6, Wendy Ziai7, Michel T Torbey8, Tom J Moullaali4,9, Michael L James10, Alibay Jafarli11, Stephan A Mayer12, Jose I Suarez7, J Claude Hemphill13, Mario Di Napoli14. 1. Department of Neurology, University of New Mexico, MSC10-5620, 1, Albuquerque, NM, 87131, USA. adivani@gmail.com. 2. Department of Statistics and Applied Probability, University of California, Santa Barbara, CA, USA. 3. Neurological Clinic, Department of Experimental and Clinical Medicine, Marche Polytechnic University, Ancona, Italy. 4. The George Institute for Global Health, UNSW, Sydney, Australia. 5. The George Institute China at Peking University Health Science Center, Beijing, China. 6. Heart Health Research Center, Beijing, China. 7. Department of Neurology, Neurosurgery, and Anesthesiology/Critical Care Medicine, Johns Hopkins, Baltimore, USA. 8. Department of Neurology, University of New Mexico, MSC10-5620, 1, Albuquerque, NM, 87131, USA. 9. Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK. 10. Departments of Anesthesiology and Neurology, Duke University, Durham, NC, USA. 11. Department of Neurology, University of Minnesota, Minneapolis, MN, USA. 12. Departments of Neurology and Neurosurgery, New York Medical College, Westchester Medical Center Health Network, Valhalla, NY, USA. 13. Department of Neurology, University of California San Francisco, San Francisco, CA, USA. 14. Department of Neurology, San Camillo de' Lellis District General Hospital, Rieti, Italy.
Abstract
BACKGROUND: Early systolic blood pressure (SBP) reduction is believed to improve outcome after spontaneous intracerebral hemorrhage (ICH), but there has been a limited assessment of SBP trajectories in individual patients. We aimed to determine the prognostic significance of SBP trajectories in ICH. METHODS: We collected routine data on spontaneous ICH patients from two healthcare systems over 10 years. Unsupervised functional principal components analysis (FPCA) was used to characterize SBP trajectories over first 24 h and their relationship to the primary outcome of unfavorable shift on modified Rankin scale (mRS) at hospital discharge, categorized as an ordinal trichotomous variable (mRS 0-2, 3-4, and 5-6 defined as good, poor, and severe, respectively). Ordinal logistic regression models adjusted for baseline SBP and ICH volume were used to determine the prognostic significance of SBP trajectories. RESULTS: The 757 patients included in the study were 65 ± 23 years old, 56% were men, with a median (IQR) Glasgow come scale of 14 (8). FPCA revealed that mean SBP over 24 h and SBP reduction within the first 6 h accounted for 76.8% of the variation in SBP trajectories. An increase in SBP reduction (per 10 mmHg) was significantly associated with unfavorable outcomes defined as mRS > 2 (adjusted-OR = 1.134; 95% CI 1.044-1.233, P = 0.003). Compared with SBP reduction < 20 mmHg, worse outcomes were observed for SBP reduction = 40-60 mmHg (adjusted-OR = 1.940, 95% CI 1.129-3.353, P = 0.017) and > 60 mmHg, (adjusted-OR = 1.965, 95% CI 1.011, 3.846, P = 0.047). Furthermore, the association of SBP reduction and outcome varied according to initial hematoma volume. Smaller SBP reduction was associated with good outcome (mRS 0-2) in small (< 7.42 mL) and medium-size (≥ 7.42 and < 30.47 mL) hematomas. Furthermore, while the likelihood of good outcome was low in those with large hematomas (≥ 30.47 mL), smaller SBP reduction was associated with decreasing probability of severe outcome (mRS 5-6). CONCLUSION: Our analyses suggest that in the first 6 h SBP reduction is significantly associated with the in-hospital outcome that varies with initial hematoma volume, and early SBP reduction > 40 mmHg may be harmful in ICH patients. For early SBP reduction to have an effective therapeutic effect, both target levels and optimum SBP reduction goals vis-à-vis hematoma volume should be considered.
BACKGROUND: Early systolic blood pressure (SBP) reduction is believed to improve outcome after spontaneous intracerebral hemorrhage (ICH), but there has been a limited assessment of SBP trajectories in individual patients. We aimed to determine the prognostic significance of SBP trajectories in ICH. METHODS: We collected routine data on spontaneous ICHpatients from two healthcare systems over 10 years. Unsupervised functional principal components analysis (FPCA) was used to characterize SBP trajectories over first 24 h and their relationship to the primary outcome of unfavorable shift on modified Rankin scale (mRS) at hospital discharge, categorized as an ordinal trichotomous variable (mRS 0-2, 3-4, and 5-6 defined as good, poor, and severe, respectively). Ordinal logistic regression models adjusted for baseline SBP and ICH volume were used to determine the prognostic significance of SBP trajectories. RESULTS: The 757 patients included in the study were 65 ± 23 years old, 56% were men, with a median (IQR) Glasgow come scale of 14 (8). FPCA revealed that mean SBP over 24 h and SBP reduction within the first 6 h accounted for 76.8% of the variation in SBP trajectories. An increase in SBP reduction (per 10 mmHg) was significantly associated with unfavorable outcomes defined as mRS > 2 (adjusted-OR = 1.134; 95% CI 1.044-1.233, P = 0.003). Compared with SBP reduction < 20 mmHg, worse outcomes were observed for SBP reduction = 40-60 mmHg (adjusted-OR = 1.940, 95% CI 1.129-3.353, P = 0.017) and > 60 mmHg, (adjusted-OR = 1.965, 95% CI 1.011, 3.846, P = 0.047). Furthermore, the association of SBP reduction and outcome varied according to initial hematoma volume. Smaller SBP reduction was associated with good outcome (mRS 0-2) in small (< 7.42 mL) and medium-size (≥ 7.42 and < 30.47 mL) hematomas. Furthermore, while the likelihood of good outcome was low in those with large hematomas (≥ 30.47 mL), smaller SBP reduction was associated with decreasing probability of severe outcome (mRS 5-6). CONCLUSION: Our analyses suggest that in the first 6 h SBP reduction is significantly associated with the in-hospital outcome that varies with initial hematoma volume, and early SBP reduction > 40 mmHg may be harmful in ICHpatients. For early SBP reduction to have an effective therapeutic effect, both target levels and optimum SBP reduction goals vis-à-vis hematoma volume should be considered.
Authors: Xiao-Yu Wu; Yao-Kun Zhuang; Yong Cai; Xiao-Qiao Dong; Ke-Yi Wang; Quan Du; Wen-Hua Yu Journal: J Int Med Res Date: 2021-04 Impact factor: 1.671
Authors: Aaron Berkowitz; Nirali Vora; Morgan L Prust; Deanna Saylor; Stanley Zimba; Fred Stephen Sarfo; Gentle S Shrestha Journal: Stroke Date: 2022-01-20 Impact factor: 7.914