Hemodynamic Profiling Using a Cardiac Index–Systemic Vascular Resistance Plot in Patients with Fontan Circulation

Background: Elevated Fontan pressure (FP) alone cannot fully predict clinical outcomes. We hypothesized thathemodynamic profiling using a cardiac index (CI)-systemic vascular resistance (SVR) plot could characterize clinicalfeatures and predict the prognosis of post-Fontan patients. Methods: We included post-Fontan patients whounderwent cardiac catheterization at age < 10 years. Patients were classified into four categories: A, CI ≥ 3, SVRindex (SVRI) ≥ 20;B, CI < 3, SVRI ≥ 20;C, CI ≥ 3, SVRI < 20;and D, CI < 3, SVRI < 20. The primary outcome wasfreedom from the combined endpoint: new onset of protein-losing enteropathy or plastic bronchitis, heart transplant,and death. Clinical and hemodynamic variables and freedom from the endpoint were compared betweenthe hemodynamic categories and outcome predictors were evaluated. Results: Eighty-three patients wereincluded. Median follow-up was 5.3 years. Category A/B/C/D consisted of 4/15/53/11 patients, respectively. Allthe patients in category A were New York Heart Association I/II and had a significantly lower pulmonary vascularresistance index (PVRI). Patients in category C had lower pulmonary/systemic blood flow. Patients in category Dhad a higher PVRI and had the poorest freedom from the endpoint (44% at 5 years). Elevated FP and category Dwere outcome predictors. Conclusions: CI-SVR plots was a novel adjunctive method for Fontan hemodynamicprofiling.

Noninvasive Assessment of Cardiac Index with Transesophageal Echocardiography in Patients Undergoing Mitral Valve Replacement: A Comparison between Determinations at the Mitral Valve and the Ascending Aorta

Methods: Sixteen patients with American Society of Anesthesiologists status (ASA) II-III, age ≤ 70 yr, male or female, preoperatively NYHA II-III and EF ≥ 45%, scheduled for mitral valve replacement (MVR) were studied. Complete intravenous general anesthesia was used for induction and anesthesia maintenance. After anesthesia induction we put the TEE probe into the esophagus. The cardiac index was determined at three periods following MVR: T1 30 minutes later following cessation of bypass, T2 60 minutes after cessation of bypass, T3 90 minutes after cessation of bypass. Statistical analysis was made with the Bland and Altman method. Results: Ninety-six measurements were compared. The cardiac index values at the level of prosthesis mitral valve (CIMV) ranged from 1.3 to 5.5 L·min-1·m-2 (mean 2.6 ± 0.9). The Values of cardiac index at aortic valve (CIAA) ranged from 2.7 to8.8 L·min-1·m-2 (mean 4.9 ± 1.7). Bias was -2.3 L·min-1·m-2 and limits of agreement -5.6 to 1.0 L·min-1·m-2. Conclusion: During mitral valve replacement, doubtful correlations were observed between values of cardiac index at the mitral valve and the ascending aorta using TEE.

Cardiac index (CI) versus cardio ankle vascular index (CAVI) at different degrees of head-up tilt (HUT) in healthy subjects

The cardio-ankle vascular index (CAVI) is a new index of arterial stiffness that can be measured with a VaSera VS-1000 device. An association between certain arterial stiffness indices and cardiac function has been found but has not yet been validated. The aim of this study was to establish whether any significant relationship exists between cardiac index (CI) and CAVI. Twenty healthy male volunteers with a mean age of 30 ± 5 years and a mean BMI of 23.1 ± 1.1 kg/m2 participated in the study. CO was estimated using a Doppler technique, and CAVI was measured with a VaSeraVS-1000 device. A motorised tilting table was used to achieve head-up tilt (HUT) angles of 0°, 30°and 60°, to modify the peripheral sympathetic outflow. We found that there was a significant inverse correlation between CI and the degree of head-up tilt, ( for 0°and 30°;for 0° and 60°, p for both;for 30° and 60°, ). CAVI showed a significant positive correlation relative with the degree of HUT, ( for 0° and 30°;for 0° and 60°;for 30° and 60°, for all). A significant negative correlation was found between CI and CAVI r = - 0.47, p Additionally, a significant p increase in PVR values was observed for increasing HUT values. In conclusion: An inverse relationship between CI and CAVI was shown;a decrease in cardiac output is associated with an increase in CAVI values at different degrees of HUT. This association provides further insight into the postural link between cardiac output and arterial compliance.

Application of pulse index continuous cardiac output system in elderly patients with acute myocardial infarction complicated by cardiogenic shock: A prospective randomized study

BACKGROUND Cardiogenic shock (CS) secondary to acute myocardial infarction (AMI) complicates management of the condition, and often leads to poor prognosis. Prompt and accurate monitoring of cardiovascular and accompanying hemodynamic changes is crucial in achieving adequate management of the condition. Advances in technology has availed procedures such as pulse index continuous cardiac output (PiCCO), which can offer precise monitoring of cardiovascular functions and hemodynamic parameters. In this study, PiCCO is evaluated for its potential utility in improving management and clinical outcomes among elderly patients with AMI complicated by CS. AIM To assess whether use of the PiCCO system can improve clinical outcomes in elderly patients with AMI complicated by CS.METHODS Patients from emergency intensive care units (EICU) or coronary care units (CCU) were randomized to receive PiCCO monitoring or not. The APACHE II score, SOFA score, hs-TnI, NT-proBNP, PaO2/FiO2 ratio and lactate levels on day 1, 3 and 7 after treatment were compared. The infusion and urine volume at 0-24 h, 24-48 h and 48-72 h were recorded, as were the cardiac index (CI), extravascular lung water index (EVLWI), intrathoracic blood volume index (ITBVI) and global end diastolic volume index (GEDVI) at similar time intervals. RESULTS Sixty patients with AMI complicated by CS were included in the study. The PiCCO group had a significantly lower APACHE II score, SOFA score, hs-TnI and NT-proBNP levels on day 1, 3 and 7 after treatment. The infusion and urine volume during 0-24 h in the PiCCO group were significantly greater, and this group also showed significantly higher ADL scores. Furthermore, the PiCCO group spent lesser days on vasoactive agents, mechanical ventilation, and had a reduced length of stay in EICU/CCU. Additionally, the CI was significantly higher at 48 h and 72 h in the PiCCO group compared with that at 24 h, and the EVLWI, ITBVI and GEDVI were significantly decreased at 48 h and 72 h. CONCLUSION Applying the PiCCO system could improve the clinical outcomes of elderly patients with AMI complicated by CS.

Application and Nursing of Pulse Index Continuous Cardiac Output (PiCCO) Volume Monitoring in Early Fluid Resuscitation in Patients with Septic Shock

Background: Septic shock is a rapidly changing and fatal syndrome that can cause comprehensive deterioration of cardiopulmonary and renal function and multiple organ failure. At the same time, septic shock has the complex clinical manifestations and hemodynamics. PiCCO can accurately monitor blood flow, physical and volume indicators, and active and effective fluid resuscitation are important measures to reduce the fatality rate of septic shock and improve the prognosis of patients. Objectives: To explore the application and nursing of PiCCO in early fluid resuscitation in patients with septic shock. Methods: This was a retrospective observational study. The observation group and the control group each had 30 cases. The observation group used PiCCO to guide fluid resuscitation;the control group used conventional methods to guide fluid resuscitation. The changes in CVP, HR, MAP, and urine volume per hour were observed in the two groups. The changes of various indicators before and after fluid resuscitation, the length of stay in ICU and the mortality rate were compared between the two groups. All the outcomes were collected from the electronic medical case system after patients’ discharge from the hospital. Results: APACHE II, CVP, HR, MAP were compared between the observation group and the control group, and the differences were statistically significant (P < 0.05). The blood volume of patients in the observation group was significantly improved after fluid supplementation (P < 0.05). Compared with the control group, the length of stay in ICU in the observation group was significantly shorter, and the mortality rate was also significantly reduced (P < 0.05). Conclusion: PiCCO can be better used in early fluid resuscitation of patients with septic shock.

Nitroglycerin reduces augmentation index and central blood pressure independent of effects on cardiac preload

Objective To determine whether reduction in central pressure augmentation and central systolic blood pressure by nitroglycerine (NTG) results from effects on pre-load or is due to arterial dilation. Methods We compared effects of NTG with those of lower body negative pressure (LBNP). Hemodynamic measurements were made at rest,during LBNP (10,20 and 30 mmHg,each for 15 min) and after NTG (10,30 and 100 μg/min,each dose for 15 min) in ten healthy volunteers. Cardiac pre-load,stroke volume and cardiac output were assessed by echocardiography. Central pressure augmentation and central systolic pressure were obtained by radial tonometry using a transfer function. Results LBNP (20 mmHg) and NTG (30 μg/min) reduced pre-load (as measured by the peak velocity of the S wave in the superior vena cava) to a similar degree [by (26.8±3.8)% and (23.9±3.4)%,respectively]. Compared to LBNP,NTG reduced systemic vascular resistance [by (32.9±7.5)%,P<0.01],decreased peripheral and central pressure augmentation [by (20.8±3.4)% units and (12.9±2.9)% units,respectively,each P<0.01]. Conclusion These results suggest that a reduction in pre-load does not explain reduction in pressure augmentation and central systolic blood pressure by NTG and that these effects are mediated through arterial dilation.

Observations on Cardiac Output in Animal Experiments and Clinical Application of Jiuling Bileaflet Mechanical Valve Prosthesis

Objective： To observe the cardiac output （CO） in animals and patients undergone valve replacement with Jiuling bileaflet mechanical valve prosthesis. Methods： 1. Animal experiments： 6 sheep that subjected to mitral replacement with a 2 I-ram-valve prosthesis were measured by open cardiac catheterization intraoperatively. Echocardiographic and open cardiac catheterization under dobutamine stress were performed on 2 sheep survival for 30 months post-operation.2. Patient measurements： CO of 14 cases of aortic valve and 10 cases of mitral valve was measured by open cardiac catheterization,and after 12 months,it was measured by echocardiography. Results： 1. Animal experiments： The mean CO of 6 sheep was 2.5 L/min intraoperatively by catheterization, and that of 2 sheep survival for 30 months post-implant was 3.0 L/min by echocardiography and 2.9 L/min by catheterization, respectively. 2. Patient measurements： The mean cardiac index of 4 patients with 21 mm valve replacement was （2.55 ± 0.27） L/min/m^2by catheterization, and was （2.84 ± 0.13） L/min/m^2 by echocardiography after 12 months. Conclusion： This study demonstrates that cardiac function on animals and patients return to normal activity after undergone the valve replacement, and the newly valve prosthesis shows excellent hemodynamic performance.

Outcome of In-Hospital Cardiac Arrest in Adult General Wards

Objective: Few studies have focused on factors influencing outcomes of patients with in-hospital cardiac arrest (IHCA) in general wards. The goal of this study was to report the outcomes of adult patients with IHCA in the general wards and identified the prognostic factors. Methods: Adult patients with IHCA having received cardiopulmonary resuscitation in general wards from January 2008 to December 2011 were retrospectively reviewed from our registry system. The primary outcome was survival to hospital discharge, while the secondary outcome was sustained return of spontaneous circulation (ROSC). Results: A total of 544 general ward patients were analyzed for event variables and resuscitation results. The rate of establishing a ROSC was 40.1% and the rate of survival to discharge was 5.1%. Ventricular tachycardia/ventricular fibrillation (VT/VF) was the initial rhythm in 3.9% of patients. Pre-arrest factors including a high Charlson comorbidity index (CCI) ≥ 9 (OR 0.251, 95% CI 0.098 - 0.646), cardiac comorbidity (OR 0.612, 95% CI 0.401 - 0.933), and arrest time on the midnight shift (OR 0.403, 95% CI 0.252 - 0.642) were independently associated with a low possibility of ROSC. The initial VT/VF presenting rhythms (OR 0.135, 95% CI 0.030 - 0.601) were independently associated with a high survival rate, whereas patients with deteriorated disease course were independently associated with a decreased hospital survival (OR 3.902, 95% CI 1.619 - 9.403). Conclusions: We demonstrated that pre-arrest factors can predict patient outcome after IHCA in general wards, including the association of a CCI ≥ 9 and cardiac comorbidity with poor ROSC, and deteriorated disease course as an independent predictor of a low survival rate.

慢性心力衰竭病人血清miR-487b表达水平及其与心肌重构的关系

目的:分析慢性心力衰竭病人血清微小核糖核酸-487b(miR-487b)表达水平及其与心肌重构的关系。方法:选取2019年10月—2021年10月西安高新医院收治的96例慢性心力衰竭病人作为研究组,按照纽约心脏病协会心功能分级将病人分为Ⅰ级或Ⅱ级22例,Ⅲ级41例,Ⅳ级33例;另选取同期在同一所医院体检的健康者102名作为对照组。采用实时荧光定量聚合酶链式反应(qRT-PCR)法检测所有研究对象血清miR-487b表达水平。比较研究组与对照组血清miR-487b表达水平及研究组不同心功能分级病人血清miR-487b表达水平。采用Pearson法分析慢性心力衰竭病人血清miR-487b表达水平与心肌重构指标[包括左室重构指数(LVRI)、左室舒张末期内径(LVEDD)、左心房内径(LAD)、左室质量指数(LVMI)、左室后壁厚度(LVPW)]的关系。结果:研究组血清miR-487b表达水平低于对照组(P<0.001);研究组LVEDD、LAD、LVMI、LVPW均高于对照组(P<0.001),LVRI低于对照组(P<0.001)。研究组心功能Ⅳ级病人LVEDD、LAD、LVMI、LVPW均高于Ⅰ级或Ⅱ级、Ⅲ级病人(P<0.05),miR-487b表达水平、LVRI均低于Ⅰ级或Ⅱ级、Ⅲ级病人(P<0.05);Ⅲ级病人LVEDD、LAD、LVMI、LVPW均高于Ⅰ级或Ⅱ级病人(P<0.05),miR-487b表达水平、LVRI均低于Ⅰ级或Ⅱ级病人(P<0.05)。Pearson相关分析结果显示,慢性心力衰竭病人血清miR-487b与LAD、LVMI、LVPW均呈负相关(r值分别为-0.578、-0.502、-0.514,P<0.001),与LVRI呈正相关(r=0.464,P<0.001)。结论:慢性心力衰竭病人血清miR-487b表达水平降低,且与心肌重构密切相关。

参附注射液对急性心衰患者炎性指标、心功能及临床疗效的影响

目的观察参附注射液对急性心力衰竭(心肾阳虚型)患者的疗效,并探讨其作用机制。方法89例患者按随机数字表法分为观察组45例与对照组44例,两组均给予常规西药治疗,观察组在对照组基础上加用参附注射液。比较两组血清炎性指标、血流动力学指标、心功能及临床疗效。结果两组治疗前白细胞介素-6(IL-6)、超敏C反应蛋白(hs-CRP)、左心室射血分数(LVEF)、脑利钠肽(BNP)、肌酸激酶同工酶(CK-MB)、肌钙蛋白T(cTnT)水平和血流动力学指标心排血量(CO)、平均动脉压(MAP)、肺动脉压(PAP)水平比较,差异无统计学意义(均P>0.05)。两组治疗后5、10 d,IL-6、hs-CRP、LVEF、BNP、CK-MB、cTnT水平和血流动力学指标CO、MAP、PAP水平均较治疗前改善(均P<0.05),且观察组的各项指标改善均优于对照组(P<0.05)。治疗后观察组的总有效率为86.67%,高于对照组的72.73%。两组治疗期间及治疗后均未发现不良反应。结论参附注射液治疗急性心力衰竭可有效降低患者的血清炎性指标,改善血流动力学,提高心功能,改善生活质量,疗效良好。

不同体质指数的非酒精性脂肪性肝病患者的心功能及三大底物消耗特点

目的分析不同体质指数的非酒精性脂肪性肝病(NAFLD)患者的心功能及三大底物消耗特点。方法选取45例NAFLD患者,根据体质指数将其分为正常组(15例)、超重组(13例)和肥胖组(17例)。采用心肺运动试验(CPET)测定3组患者在运动达无氧阈时及达最大运动时的摄氧量、碳水化合物能量消耗、脂肪能量消耗、蛋白质能量消耗。采用Weber心功能评级标准评估3组患者的心功能进行评定。结果3组患者Weber心功能分级均为B级。达最大运动时,正常组、超重组、肥胖组患者的摄氧量依次降低(P<0.05);运动达无氧阈时,肥胖组患者的碳水化合物能量消耗高于超重组和正常组(P<0.05),但超重组和正常组之间差异无统计学意义(P?0.05);运动达无氧阈时,正常组、超重组、肥胖组患者的蛋白质能量消耗依次增加(P<0.05)。但运动达无氧阈和最大运动时,3组患者的脂肪能量消耗差异无统计学意义(P?0.05)。结论NAFLD患者均存在轻度至中度心功能损害。在进行较高强度运动时,体质指数越大的NAFLD患者的摄氧能力越低,心脏运动耐力越差;在进行中低强度运动时,高体质指数的NAFLD患者所需能量倾向于由碳水化合物代谢和蛋白质代谢提供;无论运动强度高低,NAFLD患者的脂肪氧化代谢能量消耗基本不受体质指数影响。

心脏彩色超声联合心踝血管指数和踝臂指数用于冠心病早期诊断的价值研究

目的:研究心脏彩色超声联合心踝血管指数(CAVI)和踝臂指数(ABI)用于冠心病早期诊断的价值。方法:选取2019年12月至2022年12月乐山市人民医院收治的146例冠心病患者,将其纳入观察组,另将同期在医院体检的70名正常体检者纳入健康对照组。两组受试者均行心脏彩色超声并检测CAVI、ABI,比较两组心肌做功指数(Tei指数)、舒张期E峰血流速度(E)与舒张晚期A峰血流速度(A)比值(E/A)、左心房内径(LAD)、左心室射血分数(LVEF)、CAVI以及ABI水平;绘制受试者工作特征(ROC)曲线,分析Tei指数、E/A、LAD、LVEF、CAVI及ABI单独诊断冠心病的价值;以冠状动脉造影结果为“金标准”,以一致性Kappa检验分析Tei指数、E/A、LAD、LVEF、CAVI及ABI联合诊断冠心病的效能。结果:观察组Tei指数、LVEF及CAVI水平明显高于健康对照组,差异有统计学意义(t=19.357、25.728、21.766,P<0.05),E/A、LAD及ABI水平明显低于健康对照组,差异有统计学意义(t=7.721、2.769、10.610,P<0.05)。经ROC分析证实Tei指数、E/A、LAD、LVEF、CAVI及ABI能够用于诊断冠心病,ROC曲线下面积分别为0.914、0.796、0.553、0.950、0.930和0.834。经一致性Kappa检验分析,Tei指数、E/A、LAD、LVEF、CAVI及ABI联合诊断冠心病的灵敏度为98.6%,特异度为92.9%,准确率为96.8%(Kappa=0.925,P<0.05)。结论:Tei指数、E/A、LAD、LVEF、CAVI及ABI可用于诊断冠心病,且联合诊断的效能更高。

术中肾动脉阻力指数用于预测心脏手术后急性肾损伤的效果

目的探讨心肺转流(CPB)心脏手术中肾动脉阻力指数(RI)用于预测术后急性肾损伤(AKI)的效果。方法选择择期行CPB心脏手术患者44例,男21例,女23例,年龄≥18岁,BMI 18.5~30.0 kg/m^(2),ASAⅠ—Ⅲ级。于麻醉诱导后20 min(T_(1))、CPB结束后30 min(T_(2))经食管超声心动图(TEE)测量左肾动脉收缩期峰值流速(PSV)及舒张末期流速(EDV),计算出左肾动脉RI=(PSV-EDV)÷PSV。采用改善全球肾脏病预后组织(KDIGO)诊断标准判断AKI发生情况,根据术后是否发生AKI将患者分为两组:AKI组和非AKI组。采用多因素Logistic回归分析心脏手术后AKI的危险因素。结果共有16例(36%)发生AKI。与非AKI组比较,AKI组CPB时间及主动脉阻断时间明显延长(P<0.05),T_(1)、T_(2)时RI明显升高(P<0.05)。多因素Logistic回归分析显示,T_(2)时RI是AKI发生的独立危险因素。T_(2)时RI预测心脏术后AKI的AUC为0.893(95%CI 0.794~0.991,P<0.010),敏感性为84.5%,特异性为78.6%,截断值为0.720。结论术中肾动脉RI是CPB心脏手术后AKI的独立危险因素,CPB结束后30 min肾动脉RI>0.720可作为心脏手术后AKI的预测指标。

超声新技术在评估胎儿心功能中的研究进展

超声心动图检查是目前评估胎儿心功能的主要方法之一。胎儿心脏定量分析技术(fetal heart quantify,Fetal HQ)、心肌做功指数(myocardial performance index,MPI)等超声心动图新技术可以较准确、客观地评估胎儿心功能。本文就Fetal HQ、MPI评估胎儿心功能的研究进展进行综述。

连续无创血流动力学参数监测在脓毒症患者预后预测中的临床价值

目的探讨连续无创血流动力学参数监测在脓毒症患者预后预测中的临床价值。方法前瞻性选取2019年5月至2022年10月内江市第一人民医院收治的135例脓毒症患者,根据住院预后情况分为死亡组(n=32)和生存组(n=103)。于液体复苏前(T_(0))、液体复苏1 h(T_(1))、液体复苏2 h(T_(2))、液体复苏4 h(T_(3))时间点连续监测脓毒症患者无创血流动力学参数[心脏指数、心输出量、每搏输出量(SV)、每搏变异率(SVV)]变化,比较两组患者不同时间点的无创血流动力学参数变化;采用多因素Logistic回归模型分析影响脓毒症患者预后的因素;采用受试者操作特征(ROC)曲线分析心脏指数、心输出量、SV、SVV在脓毒症患者预后预测中的价值。结果脓毒症患者T_(1)、T_(2)、T_(3)时心脏指数、心输出量、SV、SVV均高于T_(0)时,差异均有统计学意义(P<0.05);T_(3)时心脏指数、心输出量、SV、SVV低于T_(2)时,差异均有统计学意义(P<0.05)。T_(1)、T_(2)、T_(3)时刻死亡组患者的心脏指数、心输出量、SV、SVV均明显低于生存组,差异均有统计学意义(P<0.05)。多因素Logistic回归分析结果显示,T_(1)、T_(2)、T_(3)时心脏指数、心输出量、SV、SVV均是影响脓毒症患者预后的相关因素(P<0.05);ROC曲线显示,T_(3)时刻心脏指数、心输出量、SV、SVV联合预测预后的曲线下面积(AUC)值(0.884)最大。结论无创血流动力学监测指标心脏指数、心输出量、SV、SVV可有效预测脓毒症患者预后,且联合检测预测预后的价值更高。

注射用重组人脑利钠肽对急性心力衰竭患者心功能指标、再入院率及炎症因子的影响

目的探讨注射用重组人脑利钠肽对急性心力衰竭心功能指标、再入院率及炎症因子的影响。方法收集郑州大学第五附属医院2021年7月至2022年7月收治的90例急性心力衰竭患者进行研究,按随机数字表法分为两组。对照组45例接受吸氧、洛尔类药物、利尿药物、普利类药物、低盐饮食、强心剂等治疗。观察组45例在前基础上加注射用重组人脑利钠肽治疗。观察两组疗效、心功能指标[左室射血分数(LVEF)、心脏指数(CI)、心排血量(CO)]、肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)、超敏C反应蛋白(hs-CRP)、N端B型钠尿肽前体(NT-proBNP)、转化生长因子-β1(TGF-β1)水平、再入院率、心率、不良反应发生率。结果观察组总有效率高于对照组(P<0.05)。干预后两组心功能指标(LVEF、CI、CO)水平提高,观察组高于对照组(P<0.05)。干预后两组IL-6、TGF-β1、NT-proBNP、hs-CRP、TNF-α水平降低,观察组低于对照组(P<0.05)。观察组再入院率、心率低于对照组(P<0.05)。两组不良反应发生率差异无统计学意义(P>0.05)。结论注射用重组人脑利钠肽可改善急性心力衰竭患者的心功能,减轻炎症反应,并且能降低患者再入院率。

替格瑞洛联合阿司匹林对冠心病心绞痛患者心功能指标和血清Hcy、NT-proBNP水平的影响

目的探究替格瑞洛联合阿司匹林对冠心病心绞痛患者心功能指标和血清Hcy、NT-proBNP水平的影响。方法选取2021年1月—2022年12月在蚌埠市第一人民医院就诊的152例冠心病心绞痛患者,随机分为观察组和对照组,每组76例。对照组在常规治疗基础上给予阿司匹林治疗,观察组在此基础上联合替格瑞洛治疗。观察两组治疗后的疗效,治疗前后的心绞痛发作情况、心功能指标[左室射血分数(LVEF)、每搏量(SV)和心输出量(CO)]、血脂指标[总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)和高密度脂蛋白胆固醇(HDL-C)]、血清同型半胱氨酸(Hcy)和氨基末端脑钠肽前体(NT-proBNP)水平以及治疗期间不良反应发生情况。结果治疗后,观察组治疗总有效率高于对照组(P<0.05);观察组心绞痛持续时间短于对照组,心绞痛发作频率低于对照组(P<0.05);观察组LVEF、SV和CO水平均明显高于对照组(P<0.05);观察组血脂指标变化显著优于对照组(P<0.05);观察组Hcy和NT-proBNP水平明显低于对照组(P<0.05);治疗期间,两组不良反应发生率比较差异无统计学意义(P>0.05)。结论使用替格瑞洛联合阿司匹林治疗冠心病心绞痛患者有良好疗效,能减轻临床症状,对患者心功能有明显改善,其能降低血脂指标和血清Hcy、NT-proBNP水平,不增加不良反应发生率,安全性良好。

血清脑钠肽、心肌肌钙蛋白T及休克指数与急性心肌梗死患者经皮冠脉介入术后主要不良心血管事件的相关性分析

目的 探讨血清脑钠肽(BNP)、心肌肌钙蛋白T(c Tn T)及休克指数(SI)与急性心肌梗死(AMI)患者经皮冠脉介入术(PCI)后主要不良心血管事件(MACE)的相关性。方法 回顾性分析2017年11月至2022年11月于徐州医科大学附属医院、江苏省滨海县人民医院进行PCI治疗的200例AMI患者的临床资料,将其分为MACE组(60例)与无MACE组(140例)。比较两组基线资料、血管狭窄程度(Gensini)评分、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)及术前白蛋白、BNP、c Tn T、SI。采用logistic逐步回归分析MACE的危险因素,通过受试者工作特征(ROC)曲线分析各指标预测MACE的价值。结果 MACE组糖尿病患者占比及年龄、BNP、c Tn T、SI水平高于无MACE组(P<0.05)。logistic逐步回归分析结果显示,年龄(OR=2.145,95%CI=1.056~4.357)、BNP (OR=1.985,95%CI=1.156~3.408)、c Tn T (OR=1.997,95%CI=1.145~3.483)、SI(OR=1.897,95%CI=1.260~3.196)是AMI患者PCI治疗后MACE发生的危险因素(P<0.05)。ROC曲线分析结果显示,年龄、BNP、c Tn T、SI均可用于预测AMI患者PCI治疗后MACE的发生(P<0.05)。结论 年龄、BNP、c Tn T、SI可影响AMI患者PCI治疗后MACE的发生,可用于预测MACE的发生。

体型特异性剂量估算在学龄儿童心脏CTA中的应用

目的比较容积CT剂量指数(CTDIvol)与体型特异性剂量估算(SSDE)两种测量方法测得的辐射剂量在学龄儿童心脏CTA检查中的差异并探讨其原因。方法回顾性分析我院77例学龄儿童心脏CTA检查的影像资料,手工勾勒中心层面轮廓作为感兴趣区(ROI),测量ROI的平均最大左右径(LAT)、CT值(CT_(ROI))、面积(A_(ROI))。依据LAT进行分组:A组LAT<22cm,33例;B组22cm≤LAT<25cm,26例;C组25cm≤LAT<30cm,18例。记录并计算转换因子F_(DW)和SSDE_(Dw),分析CTDI_(vol)与SSDE_(Dw)的差异,利用多元回归分析性别、年龄、AROI和LAT与SSDEDW的相关性。结果A、B、C组SSDEDw较CTDIvol分别高197.37%、192.01%、187.68%,各组间CTDIvol与SSDEDw均存在差异(P<0.05)。LAT与SSDEDw存在明显正相关关系(P<0.05),性别、年龄、AROI与SSDEDw无明显相关关系(P>0.05)。结论SSDE_(Dw)相比CTDI_(vol)评估学龄儿童心脏CTA辐射剂量更为准确。LAT与SSDE_(Dw)呈正线性相关关系,LAT每增加1cm,SSDE_(Dw)增加0.44MGy。

老年非酒精性脂肪性肝病合并2型糖尿病患者血清TyG、内脏/皮下脂肪面积比和心脏代谢指数变化及其临床意义探讨

目的探讨老年非酒精性脂肪性肝病(NAFLD)合并2型糖尿病(T2DM)患者血清三酰甘油葡萄糖乘积指数(TyG)、内脏/皮下脂肪面积比(VSR)和心脏代谢指数(CMI)变化及其临床意义。方法2021年1月~2022年12月我院诊治的老年NAFLD合并T2DM患者98例和老年NAFLD患者98例,常规检测空腹三酰甘油和空腹血糖,计算TyG指数。使用内脏脂肪检测装置测量内脏脂肪面积(VFA)和皮下脂肪面积(SFA),计算VSR。常规检测腰高比(WHR),计算CMI。采用多因素Logistic回归分析影响合并T2DM的危险因素。结果NAFLD合并T2DM组空腹血糖(FBG)、糖化血红蛋白(HbA1C)、胰岛素抵抗指数(HOMA-IR)和血清TG水平分别为(9.3±0.7)mmol/L、(9.1±1.6)%、(5.7±0.8)和(3.7±0.5)mmol/L,均显著高于NAFLD组【分别为(5.8±0.5)mmol/L、(6.1±1.2)%、(3.9±0.4)和(1.9±0.3)mmol/L,P<0.05】,而HDL-C为(1.2±0.2)mmol/L,显著低于NAFLD组【(1.5±0.4)mmol/L,P<0.05】;TyG、VSR和CMI分别为(10.8±1.5)%、(0.9±0.2)%和(1.2±0.3)%,显著高于NAFLD组【(8.7±0.4)%、(0.3±0.1)%和(0.6±0.2)%,P<0.05】;多因素Logistic回归分析显示,TyG(OR=3.124,95%CI:1.101~8.862)、VSR(OR=2.601,95%CI:1.035~6.535)和CMI(OR=2.832,95%CI:1.061~7.561)升高均为影响老年NAFLD合并T2DM的独立危险因素(P<0.05);37例重度NAFLD合并T2DM患者TyG、VSR和CMI分别为(12.4±1.9)%、(1.2±0.3)%和(1.7±0.4)%,均显著高于61例轻中度NAFLD患者【分别为(9.7±0.6)%、(0.7±0.1)%和(0.9±0.2)%,P<0.05】。结论在老年NAFLD患者,检测并计算TyG、VSR和CMI可帮助筛查T2DM,值得深入研究。