Background: Serum albumin, a vital plasma protein, helps maintain intravascular colloidal osmotic pressure, cardiac output, and renal function. Low preoperative serum albumin is linked to poor outcomes, including acut...Background: Serum albumin, a vital plasma protein, helps maintain intravascular colloidal osmotic pressure, cardiac output, and renal function. Low preoperative serum albumin is linked to poor outcomes, including acute kidney injury (AKI), after off-pump coronary artery bypass (OPCAB) surgery. This study aimed to assess the relationship between preoperative serum albumin levels and early postoperative renal injury. Methods: This prospective comparative cross-sectional study was conducted from August 2019 to February 2021 at the National Heart Foundation Hospital & Research Institute, Bangladesh. It included 160 adult patients with normal preoperative renal function undergoing OPCAB. Patients were divided into two groups: Group A (serum albumin ≥ 4.0 gm/dl) and Group B (serum albumin Results: Preoperative serum albumin was significantly different between groups (Group A: 4.21 ± 0.05 gm/dl, Group B: 3.69 ± 0.04 gm/dl, p = 0.028). Group B had a higher incidence of hypertension (71.25% vs. 51.25%, p st and 3rd postoperative days were higher in Group B (p th day. Postoperative AKI occurred in 18.75% of Group A and 36.25% of Group B. Multivariate regression indicated that low preoperative serum albumin is an independent risk factor for postoperative AKI (p = 0.012, OR = 1.815, CI: 0.675 - 1.162). Conclusion: Preoperative serum albumin level is a valuable predictor of postoperative renal function. Ensuring high normal serum albumin levels before surgery can help minimize the risk of postoperative AKI.展开更多
目的探讨利多卡因联合七氟醚吸入在非体外循环冠状动脉旁路移植术(OPCABG)中的心肌保护作用及其机制。方法选择2014年1月至2015年12月在河南省人民医院接受OPCABG治疗的冠状动脉粥样硬化性心脏病患者98例作为研究对象,根据麻醉方法将患...目的探讨利多卡因联合七氟醚吸入在非体外循环冠状动脉旁路移植术(OPCABG)中的心肌保护作用及其机制。方法选择2014年1月至2015年12月在河南省人民医院接受OPCABG治疗的冠状动脉粥样硬化性心脏病患者98例作为研究对象,根据麻醉方法将患者分为观察组和对照组,每组49例。观察组患者采用利多卡因静脉输注联合七氟醚吸入进行麻醉,对照组患者采用利多卡因静脉输注进行麻醉,观察2种麻醉方法对患者的心肌保护效果、2组患者临床恢复情况及炎症因子表达水平等情况。结果 2组患者术前血浆中肌红蛋白(MYO)、肌酸激酶同工酶(CKMB)及心肌肌钙蛋白I(cTnI)水平比较差异均无统计学意义(P>0.05)。2组患者术后6 h MYO、CKMB及cTnI水平均高于术前(P<0.05)。术后6 h,观察组患者血浆中MYO、CKMB及cTnI水平均明显低于对照组(P<0.05)。观察组患者机械通气时间短于对照组,心律失常、心肌梗死及心绞痛的发生率明显低于对照组(P<0.05)。2组患者术前血清中血管紧张素Ⅱ(AngⅡ)、白细胞介素-6(IL-6)、IL-8及肿瘤坏死因子-α(TNF-α)水平比较差异均无统计学意义(P>0.05)。2组患者术后24 h AngⅡ、IL-6、IL-8及TNF-α水平均高于术前(P<0.05);术后24 h,观察组患者血清中AngⅡ、IL-6、IL-8及TNF-α水平均显著低于对照组(P<0.05)。结论利多卡因静脉输注联合七氟醚吸入对行OPCABG患者具有较好的心肌保护作用,且能降低术后并发症的发生率。展开更多
Background Right ventricular function plays an important role in the hemodynamic derangement during off-pump coronary artery bypass （OPCAB） surgery. Pressure-volume loops have been shown to provide load-independent ...Background Right ventricular function plays an important role in the hemodynamic derangement during off-pump coronary artery bypass （OPCAB） surgery. Pressure-volume loops have been shown to provide load-independent information of cardiac function. Therefore, the aim of this study was to investigate the feasibility of construction of right ventricular pressure-volume loops with pressure and volume data measured by a volumetric pulmonary artery catheter （PAC） and to evaluate right ventricular systolic and diastolic function by end-systolic elastance （EEs） and end-diastolic stiffness （EED） in OPCAB surgery. Methods Twenty-eight patients who underwent OPCAB surgery were included. After anesthesia induction, a volumetric PAC was placed via the right internal jugular vein. Data were recorded at： anesthesia steady-state before skin incision （T1）; 5 minutes after the stabilizer device was placed for anastomosis on the heart＇s anterior wall （T2）, lateral wall （T3）, posterior wall （T4）, respectively; after sternal closure （T5）. Three sets of data were collected at each time point： first, hemodynamic variables were measured; second, right ventricular EEs and EED were calculated; third, right ventricular pressure-volume loops were constructed with pressure and volume data measured from end-diastole point, end-isovolumic systole point, peak-ejection point, end-systole point and end-isovolumic diastole point. Results Right ventricular pressure-volume loops generally shifted to the left during OPCAB surgery. Especially, the end-diastolic point shifted upward and to the left at T2--T5 compared with that at T1. Decrease in right ventricular ejection fraction, stroke volume index and end-diastolic volume index occurred （P 〈0.05） at T4 compared with values at TI. Pulmonary vascular resistance index at T4 increased relatively compared with that at T2 and T3. The change of EEs was not statistically significant during operation. Right atrial pressure increased only during coronary anasto展开更多
文摘Background: Serum albumin, a vital plasma protein, helps maintain intravascular colloidal osmotic pressure, cardiac output, and renal function. Low preoperative serum albumin is linked to poor outcomes, including acute kidney injury (AKI), after off-pump coronary artery bypass (OPCAB) surgery. This study aimed to assess the relationship between preoperative serum albumin levels and early postoperative renal injury. Methods: This prospective comparative cross-sectional study was conducted from August 2019 to February 2021 at the National Heart Foundation Hospital & Research Institute, Bangladesh. It included 160 adult patients with normal preoperative renal function undergoing OPCAB. Patients were divided into two groups: Group A (serum albumin ≥ 4.0 gm/dl) and Group B (serum albumin Results: Preoperative serum albumin was significantly different between groups (Group A: 4.21 ± 0.05 gm/dl, Group B: 3.69 ± 0.04 gm/dl, p = 0.028). Group B had a higher incidence of hypertension (71.25% vs. 51.25%, p st and 3rd postoperative days were higher in Group B (p th day. Postoperative AKI occurred in 18.75% of Group A and 36.25% of Group B. Multivariate regression indicated that low preoperative serum albumin is an independent risk factor for postoperative AKI (p = 0.012, OR = 1.815, CI: 0.675 - 1.162). Conclusion: Preoperative serum albumin level is a valuable predictor of postoperative renal function. Ensuring high normal serum albumin levels before surgery can help minimize the risk of postoperative AKI.
文摘目的探讨利多卡因联合七氟醚吸入在非体外循环冠状动脉旁路移植术(OPCABG)中的心肌保护作用及其机制。方法选择2014年1月至2015年12月在河南省人民医院接受OPCABG治疗的冠状动脉粥样硬化性心脏病患者98例作为研究对象,根据麻醉方法将患者分为观察组和对照组,每组49例。观察组患者采用利多卡因静脉输注联合七氟醚吸入进行麻醉,对照组患者采用利多卡因静脉输注进行麻醉,观察2种麻醉方法对患者的心肌保护效果、2组患者临床恢复情况及炎症因子表达水平等情况。结果 2组患者术前血浆中肌红蛋白(MYO)、肌酸激酶同工酶(CKMB)及心肌肌钙蛋白I(cTnI)水平比较差异均无统计学意义(P>0.05)。2组患者术后6 h MYO、CKMB及cTnI水平均高于术前(P<0.05)。术后6 h,观察组患者血浆中MYO、CKMB及cTnI水平均明显低于对照组(P<0.05)。观察组患者机械通气时间短于对照组,心律失常、心肌梗死及心绞痛的发生率明显低于对照组(P<0.05)。2组患者术前血清中血管紧张素Ⅱ(AngⅡ)、白细胞介素-6(IL-6)、IL-8及肿瘤坏死因子-α(TNF-α)水平比较差异均无统计学意义(P>0.05)。2组患者术后24 h AngⅡ、IL-6、IL-8及TNF-α水平均高于术前(P<0.05);术后24 h,观察组患者血清中AngⅡ、IL-6、IL-8及TNF-α水平均显著低于对照组(P<0.05)。结论利多卡因静脉输注联合七氟醚吸入对行OPCABG患者具有较好的心肌保护作用,且能降低术后并发症的发生率。
文摘Background Right ventricular function plays an important role in the hemodynamic derangement during off-pump coronary artery bypass （OPCAB） surgery. Pressure-volume loops have been shown to provide load-independent information of cardiac function. Therefore, the aim of this study was to investigate the feasibility of construction of right ventricular pressure-volume loops with pressure and volume data measured by a volumetric pulmonary artery catheter （PAC） and to evaluate right ventricular systolic and diastolic function by end-systolic elastance （EEs） and end-diastolic stiffness （EED） in OPCAB surgery. Methods Twenty-eight patients who underwent OPCAB surgery were included. After anesthesia induction, a volumetric PAC was placed via the right internal jugular vein. Data were recorded at： anesthesia steady-state before skin incision （T1）; 5 minutes after the stabilizer device was placed for anastomosis on the heart＇s anterior wall （T2）, lateral wall （T3）, posterior wall （T4）, respectively; after sternal closure （T5）. Three sets of data were collected at each time point： first, hemodynamic variables were measured; second, right ventricular EEs and EED were calculated; third, right ventricular pressure-volume loops were constructed with pressure and volume data measured from end-diastole point, end-isovolumic systole point, peak-ejection point, end-systole point and end-isovolumic diastole point. Results Right ventricular pressure-volume loops generally shifted to the left during OPCAB surgery. Especially, the end-diastolic point shifted upward and to the left at T2--T5 compared with that at T1. Decrease in right ventricular ejection fraction, stroke volume index and end-diastolic volume index occurred （P 〈0.05） at T4 compared with values at TI. Pulmonary vascular resistance index at T4 increased relatively compared with that at T2 and T3. The change of EEs was not statistically significant during operation. Right atrial pressure increased only during coronary anasto
