지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Invasive blood pressure (IBP) is measured for the patient’s real time arterial pressure (ABP) to monitor the critical abrupt disorders of the cardiovascular system. It can be used for the estimation of cardiac output and the opening and closing time detection of the aortic valve. Although the unexplained inflections on ABP make it difficult to find the mathematical relations with other cardiovascular parameters, the estimations based on ABP for other data have been accepted as useful methods as they had been verified with the statistical results among vast patient data. Previous windkessel models were composed with systemic resistance and vascular compliance and they were successful at explaining the average systolic and diastolic values of ABP simply. Although it is well-known that the blood pressure reflection from peripheral arteries causes complex inflection on ABP, previous models do not contain any elements of the reflections because of the complexity of peripheral arteries’ shapes. In this study, to simulate a reflection wave of blood pressure, a new mathematical model was designed with four elements that were the impedance of aorta, the compliance of aortic arch, the peripheral resistance, and the compliance of peripheral arteries. The parameters of the new model were adjusted to have three types of arterial blood pressure waveform that were measured from a patient. It was used to find the relations between the inflections and other cardiovascular parameters such as the opening-closing time of aortic valve and the cardiac output. It showed that the blood pressure reflection can bring wide range errors to the closing time of aortic valve and cardiac output with the conventional estimation based on ABP and that the changes of one-stroke volumes can be easily detected with previous estimation while the changes of heart rate can bring some error caused by unexpected reflections
목차
등록된 정보가 없습니다.
참고문헌 (12)
참고문헌 신청
Figueroa CA / 2006 / A coupled momentum method for modeling blood flow in three-dimensional deformable arteries / Comput. Methods Appl. Mech. Engrg. 195 : 5685 ~ 5706
Finkelstein SM / 1992 / First- and third-order models for determining arterial complia / J Hypertens 10 : S11 ~ S14
Goedije O / 1999 / Continuous cardiac output by femoral arterial thermodilution calibrated pulse contour analysis:comparison with pulmonary arterial thermodilution / Crit Car
Linton NWF / 2001 / Estimation of changes in cardiac ouput from the arterial blood pressure waveform in the upper limb / Br J Anaesth 86 (4) : 486 ~ 496
London GM / 1999 / Influence of arterial pulse and refected waves on blood pressure and cardiac function / Am Heart J 138 : 220 ~ 224
Finkelstein SM / 1992 / First- and third-order models for determining arterial complia / J Hypertens 10 : S11 ~ S14
Goedije O / 1999 / Continuous cardiac output by femoral arterial thermodilution calibrated pulse contour analysis:comparison with pulmonary arterial thermodilution / Crit Car
Linton NWF / 2001 / Estimation of changes in cardiac ouput from the arterial blood pressure waveform in the upper limb / Br J Anaesth 86 (4) : 486 ~ 496
London GM / 1999 / Influence of arterial pulse and refected waves on blood pressure and cardiac function / Am Heart J 138 : 220 ~ 224
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