The method described by Czosnyka is particularly suitable for measuring CPPe in patients undergoing cerebral angiography
BackgroundThe primary objective of this study was to estimate the effective cerebral perfusion pressure (CPPe), critical closing pressure (CrCP), and resistance-area product (RAP) of the intravascular common carotid artery using three different methods. These estimates were then compared to the refe...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Surgery |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fsurg.2024.1488265/full |
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| author | Yunyun Liang Pei Mo Yonghong Chen Xinwu Liu Lin Chen Xiaomin Zhou Zijing Wang Junyi Fu Longchang Xie |
| author_facet | Yunyun Liang Pei Mo Yonghong Chen Xinwu Liu Lin Chen Xiaomin Zhou Zijing Wang Junyi Fu Longchang Xie |
| author_sort | Yunyun Liang |
| collection | DOAJ |
| description | BackgroundThe primary objective of this study was to estimate the effective cerebral perfusion pressure (CPPe), critical closing pressure (CrCP), and resistance-area product (RAP) of the intravascular common carotid artery using three different methods. These estimates were then compared to the reference method of linear regression (LR).MethodsIn our previous study, we employed linear regression to evaluate the values of CrCP and RAP. To assess the consistency of results obtained from alternative assessment methods (CPPe, CrCP, and RAP) with the linear regression LR, we conducted a secondary analysis of the previously collected data. We estimated the CPPe, CrCP, and RAP of the intravascular common carotid artery using three different methods: Belford's method (mean/diastolic pressure), Czosnyka's method (systolic/diastolic pressure, CZO), and Schmidt's method (systolic/diastolic pressure, SCH), and compared these estimates with LR. CPPe is calculated as the difference between mean arterial pressure and CrCP. The primary outcome was the mean differences and biases between CPPe, CrCP, and RAP of intravascular common carotid artery, the secondary outcome was correlations and agreement among these various estimates of CPPe measurements.ResultsNineteen patients were included in this analysis. The median age was 53.5 ± 11.6 years, with 73.7% being men. There were no significant differences in CPPe, RAP and CrCP between the right common carotid artery (RCCA) and the left common carotid artery (LCCA) by using three different methods. Compared to the LR, the mean differences in CPPe and CrCP values were no significant for LCCA according to SCH, CZO and BEL method. But for RAP, the three methods are different in terms of mean differences compared with the LR. CPPe and CrCP revealed a small mean bias compared CPPCZO with CPPLR. Comparing CPPLR measurements with CPPBEL, the mean bias was higher with wider LoA. BEL and CZO showed a strong correlation with LR in Pearson correlation coefficients.ConclusionThe CPPe, CrCP, and RAP values obtained using the CZO calculation methods are comparable to those measured using the reference method. These findings may provide valuable insights for patients undergoing digital subtraction brain angiography, aiding in the determination of the most suitable approach for individualized blood pressure management. |
| format | Article |
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| institution | Kabale University |
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| publishDate | 2025-01-01 |
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| series | Frontiers in Surgery |
| spelling | doaj-art-abf641058dde4017aa7a5d2564dc2d642025-01-06T06:59:38ZengFrontiers Media S.A.Frontiers in Surgery2296-875X2025-01-011110.3389/fsurg.2024.14882651488265The method described by Czosnyka is particularly suitable for measuring CPPe in patients undergoing cerebral angiographyYunyun Liang0Pei Mo1Yonghong Chen2Xinwu Liu3Lin Chen4Xiaomin Zhou5Zijing Wang6Junyi Fu7Longchang Xie8Department of Rehabilitation Medicine, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, ChinaDepartment of Cardiology, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, ChinaDepartment of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, ChinaDepartment of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, ChinaDepartment of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, ChinaDepartment of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, ChinaCollege of Clinical Medicine, Guilin Medical University, Guilin, ChinaDepartment of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, ChinaDepartment of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, ChinaBackgroundThe primary objective of this study was to estimate the effective cerebral perfusion pressure (CPPe), critical closing pressure (CrCP), and resistance-area product (RAP) of the intravascular common carotid artery using three different methods. These estimates were then compared to the reference method of linear regression (LR).MethodsIn our previous study, we employed linear regression to evaluate the values of CrCP and RAP. To assess the consistency of results obtained from alternative assessment methods (CPPe, CrCP, and RAP) with the linear regression LR, we conducted a secondary analysis of the previously collected data. We estimated the CPPe, CrCP, and RAP of the intravascular common carotid artery using three different methods: Belford's method (mean/diastolic pressure), Czosnyka's method (systolic/diastolic pressure, CZO), and Schmidt's method (systolic/diastolic pressure, SCH), and compared these estimates with LR. CPPe is calculated as the difference between mean arterial pressure and CrCP. The primary outcome was the mean differences and biases between CPPe, CrCP, and RAP of intravascular common carotid artery, the secondary outcome was correlations and agreement among these various estimates of CPPe measurements.ResultsNineteen patients were included in this analysis. The median age was 53.5 ± 11.6 years, with 73.7% being men. There were no significant differences in CPPe, RAP and CrCP between the right common carotid artery (RCCA) and the left common carotid artery (LCCA) by using three different methods. Compared to the LR, the mean differences in CPPe and CrCP values were no significant for LCCA according to SCH, CZO and BEL method. But for RAP, the three methods are different in terms of mean differences compared with the LR. CPPe and CrCP revealed a small mean bias compared CPPCZO with CPPLR. Comparing CPPLR measurements with CPPBEL, the mean bias was higher with wider LoA. BEL and CZO showed a strong correlation with LR in Pearson correlation coefficients.ConclusionThe CPPe, CrCP, and RAP values obtained using the CZO calculation methods are comparable to those measured using the reference method. These findings may provide valuable insights for patients undergoing digital subtraction brain angiography, aiding in the determination of the most suitable approach for individualized blood pressure management.https://www.frontiersin.org/articles/10.3389/fsurg.2024.1488265/fullcerebral perfusion pressurecerebral blood flowresistance-area productcerebrovascular resistancecritical closing pressure |
| spellingShingle | Yunyun Liang Pei Mo Yonghong Chen Xinwu Liu Lin Chen Xiaomin Zhou Zijing Wang Junyi Fu Longchang Xie The method described by Czosnyka is particularly suitable for measuring CPPe in patients undergoing cerebral angiography Frontiers in Surgery cerebral perfusion pressure cerebral blood flow resistance-area product cerebrovascular resistance critical closing pressure |
| title | The method described by Czosnyka is particularly suitable for measuring CPPe in patients undergoing cerebral angiography |
| title_full | The method described by Czosnyka is particularly suitable for measuring CPPe in patients undergoing cerebral angiography |
| title_fullStr | The method described by Czosnyka is particularly suitable for measuring CPPe in patients undergoing cerebral angiography |
| title_full_unstemmed | The method described by Czosnyka is particularly suitable for measuring CPPe in patients undergoing cerebral angiography |
| title_short | The method described by Czosnyka is particularly suitable for measuring CPPe in patients undergoing cerebral angiography |
| title_sort | method described by czosnyka is particularly suitable for measuring cppe in patients undergoing cerebral angiography |
| topic | cerebral perfusion pressure cerebral blood flow resistance-area product cerebrovascular resistance critical closing pressure |
| url | https://www.frontiersin.org/articles/10.3389/fsurg.2024.1488265/full |
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