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Effect of right heart Systolic function on Outcomes in Patients with Constrictive Pericarditis Undergoing Pericardiectomy

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Chinese Medical Journal 2016年第2期129卷 154-161页

作者： Xue Lin Rui-Yi Xu Jian-Zhou Liu Wei Chen Lian-Feng Chen Peng-Hua Yang Li-Gang Fang Department of Cardiology Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China Department of Cardiac Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China Department of Obstetrics Gynecology and Reproductive Sciences University of Maryland Balitomre USA

Background： To determine the influence of right ventricular function in patients with constrictive pericarditis （CP） undergoing surgery and to compare the outcomes of patients who received surgery with those managed medically. Methods： Patients with the diagnosis of CP and healthy volunteers were recruited from January 2006 to November 2011. Patients with CP chose to either receive pericardiectomy or medical management. Echocardiographic measurements were performed to evaluate heart function, and survival was recorded. Results： A total of 58 patients with CP （36 received pericardiectomy, 22 managed medically）, and 43 healthy volunteers were included. CP patients who received surgery had a higher survival rate than those managed medically （P = 0.003）, and higher st, rvival was also seen in the subgroup of CP patients with severely impaired right systolic function. Albumin level, left ventricular end-diastolic dimension, and tricuspid regurgitation velocity were associated with survival in CP patients who received surgery. Conclusions： Preoperative right heart function does not affect surgical outcomes. Patients with severely impaired preoperative right systolic function obtain a greater survival advantage with surgery than with medical treatment.

关键词： Constrictive Pericarditis right heart function Pericardiectomy Medical Management

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Systemic-to-pulmonary artery pressure ratio as a predictor of patient outcome following liver transplantation

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World Journal of Hepatology 2016年第32期8卷 1384-1391页

作者： Annette Rebel Dung Nguyen Brooke Bauer Paul A Sloan Amy DiLorenzo Zaki-Udin Hassan Department of Anesthesiology and Surgery Medical Center N 202University of Kentucky

AIM To assess the value of the mean systemic-to-pulmonary artery pressure(MAP/m PAP) ratio for predicting outcomes following orthotopic liver transplant(OLT). METHODS A retrospective data analysis was performed and data(mean arterial blood pressure, mean pulmonary artery pressure and Cardiac Index) were collected at several points during OLT. Outcomes evaluated were duration of postoperative endotracheal intubation [ET; minutes after intensive care unit(ICU) arrival], length of ICU stay, total hospitalization and frequency of immediate postoperative complications. A total of 91 patients were included in the data analysis. Based on the intraoperative course of the MAP/m PAP ratio, 2 hemodynamic responses were identified: Group 1(MAP/m PAP ratio increase during anhepatic period with postreperfusion recovery, n = 66); and Group 2(MAP/m PAP ratio with no change during anhepatic period or decreased without recovery, n = 25). RESULTS The main finding was that the lack of increased MAP/m PAP ratio in the anhepatic period was associated with:(1) longer intubation times; and(2) prolonged ICU stays and total hospitalization time, when compared to patients with an increase in MAP/m PAP ratio during the anhepatic period. CONCLUSION The data from this retrospective study should raise awareness to the mean systemic to pulmonary artery pressure ratio as a potential indicator for poor outcome after OLT. Further prospective studies are needed for validation.

关键词： Anesthesiology Liver transplantation right heart function Outcome Morbidity

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Assessment of Non-Contact Measurement Using a Microwave Sensor to Jugular Venous Pulse Monitoring

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Journal of Biomedical Science and Engineering 2021年第3期14卷 94-102页

作者： Satoshi Suzuki Masaaki Hoshiga Kentaro Kotani Takafumi Asao Faculty of Engineering Science Kansai University Osaka Japan Faculty of Medicine Osaka Medical College Osaka Japan

The jugular venous pulse (JVP) waveform provides an insight into right heart function, and its assessment is important in patients with heart failure. However, the conventional pulse-transducer (contact) method for monitoring this waveform is not frequently used because it requires a high degree of skill. The aim of this study was to confirm the effectiveness of a prototype non-contact system that employs microwave radar (24 GHz, 7 mW;non-contact system) for JVP measurement. Experiments were conducted on eight healthy male volunteers (21.88 ± 0.99 years). JVP measurements were compared between the conventional contact method and the proposed non-contact method. Change in JVP waveform was measured in response to an angle of reclining in five steps from the supine position to 75° of elevation. The obtained JVP measurements were similar between the two methods. Because in the non-contact method the faint pulsation of the JVP is not suppressed by the pressure of a sensor placed on the skin, the prototype microwave radar system is particularly suitable for evaluating the JVP waveform.

关键词： Microwave Radar Non-Contact Monitoring Jugular Venous Pressure right heart function

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