Objective To investigate the clinical characteristics and aortic morphological features of gestational aortic dissection (GAD), and to identify potential clinical and imaging risk factors. Materials and Methods Clinical data and aortic computed tomography angiography (CTA) images from 43 women with GAD were retrospectively analyzed and compared with two control cohorts: 100 women undergoing cesarean delivery without dissection (clinical controls) and 22 age-matched women with normal aortic CTA findings (imaging controls). Aortic diameters, arch length, arch angulation, and curvature-related indices were measured independently by two experienced cardiovascular radiologists. Results Chest/back pain was the predominant presentation (81.4%). Chronic hypertension (27.9%), Marfan syndrome (20.9%), and hypoproteinemia (32.6%) were common associated conditions; 70% of women with aortopathy were not diagnosed before dissection, and 20.9% had no known risk factors. Type A dissection (62.8%) occurred mainly in the third trimester, whereas type B dissection (37.2%) showed more heterogeneous timing, including postpartum events. Compared with cesarean controls, women with GAD were taller (171.1 vs. 161.9 cm, P < 0.001), had higher systolic blood pressure (131.1 vs. 120.5 mmHg, P = 0.010) and pulse pressure (60.6 vs. 45.7 mmHg, P < 0.001), and had higher gravidity (2.33 vs. 1.86, P = 0.012) and parity (0.86 vs. 0.26, P < 0.001). Compared with imaging controls, women with GAD had significantly larger diameters across all aortic segments and a significantly shorter aortic arch length (P < 0.001), while arch angles and curvature-related parameters were not significantly different. Conclusion GAD is associated with a distinct clinical-morphological profile beyond traditional risk factors. In addition to established contributors such as hypertension and connective tissue disease, increased maternal height, higher gravidity/parity, and shorter aortic arch length may contribute to risk stratification. The high prevalence of unrecognized aortopathy and dissection in previously healthy women supports a low threshold for evaluation in symptomatic pregnancy.

PURPOSE:To investigate the clinical outcomes of acute Stanford type B intramural hematoma (TBIMH) without ulcer-like lesions following medical management and to identify predictors of disease progression. MATERIALS AND METHODS:A retrospective analysis was performed on patients with acute TBIMH without ulcer-like lesions who received medical management. Patients were categorized into progression and nonprogression groups based on 1-year follow-up computed tomography angiography (CTA). Disease progression was defined as aortic rupture, aortic dissection, aortic enlargement (≥5 mm), or hematoma thickening (≥3 mm), while nonprogression was defined as complete/partial resolution or retention of the hematoma. A multivariate analysis identified the predictors of disease progression, and Kaplan-Meier curves were used to compare survival outcomes. RESULTS:A total of 110 patients (mean age 55.9±10.5 y, 25 females) were included, with 21 patients (19.1%) showing disease progression. Multivariate analysis revealed that the maximum aortic diameter (MAD) (OR=7.6, P=0.003) and maximum CT value of the hematoma (CTmax) (OR=1.04, P=0.025) were independently associated with disease progression. The optimal cutoff values for MAD and CTmax were 40.0 mm (AUC: 0.69, sensitivity: 38.1%, specificity: 92.1%) and 71.9 HU (AUC: 0.68, sensitivity: 76.2%, specificity: 66.3%), respectively. When MAD and CTmax were combined, the AUC increased to 0.75 (sensitivity: 81.0%, specificity: 66.3%). CONCLUSION:A model based on MAD and CTmax effectively stratifies progression risk in TBIMH without ulcer-like lesions, facilitating early intervention in high-risk patients.

PURPOSE:This study investigates the correlation between fat attenuation index (FAI) and plaque components before and after coronary plaque formation in humans. METHODS:This retrospective study included 249 patients who developed newly identified coronary plaques after two coronary computed tomography angiography (CCTA) examinations, with the first yielding normal results. Vessels with newly identified plaques were categorized into the new plaque group, while others formed the no new plaque group. A control group of 50 patients with consistently normal CCTA results was also included. The new plaque group was further divided into stable FAI and progressive FAI groups based on changes in FAI. RESULTS:Before plaque formation, baseline FAI was highest in the new plaque group [(-80 (-84，-77) HU]. Baseline FAI was positively correlated with plaque volume, necrotic core volume, fibrofatty volume, and necrotic core percentage at both patient and vessel levels while showing a negative association with fibrous volume percentage (P < 0.05). After plaque formation, the percentage of necrotic core volume and diabetes mellitus were independent determinants of FAI increase in the patient level [OR: 1.31 (95 % CI: 1.12---1.53) and OR: 3.07 (95 % CI: 1.14---8.28), respectively]. At the vessel level, the percentage of necrotic core volume and fibrous volume were independent determinants of FAI increase [OR: 1.33 (95 % CI: 1.16---1.53) and OR: 0.98 (95 % CI: 0.96---0.99), respectively]. CONCLUSION:FAI was found to interact with the volume and components of newly formed coronary plaques, especially the necrotic core. A higher baseline FAI was associated with necrotic core formation, and the development of necrotic cores further increased FAI. Conversely, the formation of fibrous components appeared to mitigate the increase in FAI.

BACKGROUND:Pulmonary hypertension (pH) is a malignant pulmonary circulation disease. Right heart catheterization (RHC) is the gold standard procedure for quantitative evaluation of pulmonary hemodynamics. Accurate and noninvasive quantitative evaluation of pulmonary hemodynamics is challenging due to the limitations of currently available assessment methods. METHODS:Patients who underwent computed tomographic pulmonary angiography (CTPA) and RHC examinations within 2 weeks were included. The dataset was randomly divided into a training set and a test set at an 8:2 ratio. A radiomic feature model and another two-dimensional (2D) feature model aimed to quantitatively evaluate of pulmonary hemodynamics were constructed. The performance of models was determined by calculating the mean squared error, the intraclass correlation coefficient (ICC) and the area under the precision-recall curve (AUC-PR) and performing Bland-Altman analyses. RESULTS:345 patients: 271 patients with PH (mean age 50 ± 17 years, 93 men) and 74 without PH (mean age 55 ± 16 years, 26 men) were identified. The predictive results of pulmonary hemodynamics of radiomic feature model integrating 5 2D features and other 30 radiomic features were consistent with the results from RHC, and outperformed another 2D feature model. The radiomic feature model exhibited moderate to good reproducibility to predict pulmonary hemodynamic parameters (ICC reached 0.87). In addition, pH can be accurately identified based on a classification model (AUC-PR =0.99). CONCLUSION:This study provides a noninvasive method for comprehensively and quantitatively evaluating pulmonary hemodynamics using CTPA images, which has the potential to serve as an alternative to RHC, pending further validation.

The ectopic thyroid gland is an abnormal development of the embryo. Most of the ectopic thyroid occurs in the path around the thyroglossal duct or on the lateral side of the neck. However, ectopic thyroid occurs in the heart, which is rare. We report a case of right ventricular ectopic thyroid. This case highlights the imaging characteristics of computed tomography (CT) and cardiac magnetic resonance (CMR) and discusses the underlying mechanisms for a timely diagnosis.

BackgroundAnalysis of left atrial (LA) strain and left atrioventricular coupling index (LACI) have prognostic value in cardiovascular diseases. However, the prognostic value of LA strain and LACI in patients with suspected myocarditis and preserved left ventricular ejection fraction (LVEF) is unclear.PurposeTo investigate the prognostic value of LA strain and LACI in patients with suspected myocarditis and preserved LVEF in comparison with conventional MRI outcome predictors.Study TypeRetrospective.PopulationOne hundred sixty‐five patients with clinically suspected myocarditis and preserved LVEF with available follow‐up data.Field Strength/SequenceSteady‐state free precession cine and phase‐sensitive inversion recovery segmented gradient echo late gadolinium enhancement sequences at 3.0 T.AssessmentLeft ventricular (LV) and LA strain were evaluated using feature tracking. LACI was calculated as the ratio of LA and LV volumes at LV end‐diastole. Patients were followed‐up with the primary endpoint being major adverse cardiovascular events (MACE).Statistical TestsIndependent‐samples t‐test and Mann–Whitney U test to compare patients with and without MACE, receiver operating characteristic (ROC) curve analysis to define high/low risk groups, Kaplan–Meier survival analysis and Cox proportional hazards regression to assess prognosis. A P value of <0.05 was considered statistically significant.ResultsThe associations of LV strain parameters (including global radial, circumferential, and longitudinal strain) and LACI with MACE were not significant (P = 0.511, 0.108, 0.148, and 0.847, respectively). An optimal LA conduit strain (Ԑe) cutoff value of 10.4% was identified to best classify patients into low‐ and high‐risk groups. Only Ԑe was significantly associated with MACE in both univariable (hazards ratio [HR] 0.936, 95% confidence interval [CI] 0.884–0.991) and multivariable Cox survival analyses (HR 0.937, 95% CI 0.884–0.994).Data ConclusionLA conduit strain has prognostic value in patients with suspected myocarditis and preserved LVEF, incremental to conventional MRI outcome predictors, whereas LACI was not associated with MACE occurrence.Evidence Level3Technical EfficacyStage 2

PurposeTo investigate the prevalence and characteristics of late gadolinium enhancement (LGE) by cardiac magnetic resonance (CMR) and its prognostic value in patients with Takayasu arteritis (TA).Materials and methodsSixty TA patients with a CMR examination were retrospectively included. All TA patients were divided into with LGE-positive and LGE-negative groups. Bi-ventricular function and location, distribution, and pattern of left ventricular (LV) LGE were evaluated in both LGE-positive and LGE-negative groups. Primary outcome was defined as a composite of cardiovascular death, hospitalization for heart failure, coronary artery revascularization, and stroke. Univariate and multivariate Cox proportional hazard regression analyses were used to evaluate the association between variables and primary outcomes.ResultsSixty consecutive TA patients were enrolled in this study. The mean age was 38.2 ± 13.8 years and 54 patients (54/60, 90.0%) were female. LGE-positive was observed in twenty-one (21/60, 35%) patients in the total patients with TA. LGE was predominantly distributed in the middle wall and subendocardial. The patchy and infarcted LGE patterns were the most common. Compared with the LGE-negative group, the LGE-positive group had reduced LV ejection fraction (P = 0.033), elevated LV end-diastolic volume index (P = 0.008), LV end-systolic volume index (P = 0.012), and LV mass (P = 0.008). During a median follow-up period of 1,892 days (interquartile range: 1,764–1,988 days), the primary outcomes occurred in thirteen patients. In the univariate analysis, LGE-positive (hazard ratio [HR] = 4.478, 95% confidence interval [CI]: 1.376–14.570; P = 0.013) were independently associated with the primary outcomes. However, LGE-positive did not retain its value as an independent predictor of primary outcomes in the multivariate analysis. Instead, LVMI (HR = 1.030, 95%CI: 1.013–1.048; P = 0.001) was the strongest independent predictor of primary outcomes in patients with TA. The Kaplan-Meier plot revealed that patients with LVMI ≥ 57.5 g/m2 have a worse prognosis.ConclusionLGE-positive detected by CMR was observed in 35% of total TA patients with different distributions and patterns. LGE is associated with adverse LV remodeling and worsen cardiac function. However, LVMI rather than LGE can provide independent prognostic information in patients with TA.

Cardiac lymphangioma is a rare benign cardiac tumour and most of them occur during childhood. Recent articles reviewed the current literature of 39 cases of primary cardiac and pericardial lymphangioma with detailed analysis of clinical and imaging findings of cardiac lymphangioma (1-3). Of these 39 cases, coronary arteries were involved in only 11 cases with the right coronary artery and the first obtuse marginal branch of left circumflex encroached in 10 cases and one case, respectively (3). Details of imaging appearances were reported in 23 cases of cardiac lymphangioma including chest X-ray (n=12), echocardiography (n=22), computed tomography (CT) (n=16) and magnetic resonance imaging (MRI) (n=16) findings (3). To the best of our knowledge, there are no reports of comprehensive imaging analysis with inclusion of all imaging modalities in the diagnosis of cardiac lymphangioma. A comprehensive correlation of imaging findings with clinical data and pathology is of great significance in assisting clinical diagnosis and decisionmaking of primary cardiac lymphangioma. Herein, we reported a case of asymptomatic giant cystic lymphangioma adjacent to the lateral posterior wall of the left ventricle with 4 years of follow-up results. This case highlights the benign imaging appearances of cardiac lymphangioma with results correlated with the pathological findings. Case presentation

Diffuse myocardial interstitial fibrosis (DMIF) is a key factor for heart failure (HF) in diabetic cardiomyopathy. MRI T1‐mapping technique can quantitatively evaluate DMIF.

Background The clinical value of pericoronary adipose tissue in assessing Takayasu arteritis (TAK) with coronary artery involvement (CAI) is yet to be determined. The purpose of this study was to investigate the characteristics of pericoronary fat attenuation index (FAI) derived from coronary computed tomography angiography (CTA) in patients with TAK. Methods This is a retrospective study involving enrollment of 111 consecutive patients (mean age, 33.92±12.48 years) who were diagnosed as TAK, of which 52 patients had coronary artery involvement (TAK-CAI) and 59 patients without coronary artery involvement (TAK-nonCAI). Based on the extent of coronary artery lesion, the TAK-CAI group was further classified into localized group (n=25) and diffused group (n=27). Furthermore, patients with TAK were divided into active group (n=33) and inactive group (n=78). Meanwhile, 51 gender-matched individuals with normal appearance in coronary CTA examination were enrolled as the control group. The pericoronary FAI was quantitatively evaluated on each coronary CTA examination groups. The diagnostic value of pericoronary FAI was determined using the area under the curve (AUC) of the receiver operating characteristic. Results A higher pericoronary FAI was found in TAK-nonCAI group than control group with normal coronary arteries (P<0.001). Multivariate analysis showed that the FAI is an independent risk factor for coronary involvement in TAK patients [odds ratio (OR): 1.23, 95% confidence interval (CI): 1.13–1.35, P<0.001]. With the best cut-off value of −86.50, the pericoronary FAI identified coronary involvement with 67.8% sensitivity and 74.5% specificity (AUC: 0.794, 95% CI: 0.713–0.875, P<0.001). Multivariate analysis showed that the pericoronary FAI is an independent risk factor for determination of active TAK patients (OR: 1.57, 95% CI: 1.25–1.97, P<0.001). With the best cut-off value of −79.50, the pericoronary FAI identified active inflammation with 93.9% sensitivity and 74.4% specificity (AUC: 0.911, 95% CI: 0.860–0.962, P<0.001). Conclusions Coronary CTA-derived FAI is significantly increased in patients with TAK and can be used as a reliable biomarker to distinguish TAK patients from those with normal coronary arteries, and determine the extent of TAK inflammation.

Background: Traditional radiography angles do not adequately reveal the shape and position of the right ventricular pacing electrode. Objective: This study aimed to explore better radiography angles with the help of cardiac computed tomography (CT). Methods: We analyzed the cardiac CT images of consecutive outpatients from 2018 to 2019. The right anterior oblique (RAO) 30° and the left anterior oblique (LAO) 40° were found to sufficiently display the shape and position of the right ventricular pacing electrode. Results: A total of 214 consecutive outpatients were enrolled, whose average age was 55.0 ± 13.0 years, and 151 were male (70.6%). Through analyzing the cardiac CT images, the α angle (33.7° ± 6.1) and the γ angle (38.8° ± 8.0) were determined. Furthermore, we verified these angles in 48 patients after pacemaker implantation. The results showed that the ratio of the length of right ventricular electrode using the RAO α angle (≈30°) to the posterior-anterior position (PA position) was 1.099 ± 0.157 VS 1.053 ± 0.182 (the ratio using the traditional RAO 45°) (P < 0.001). We observed that the relationship between the right ventricular active electrode and the ventricular septum was better identified using the LAO γ angle (≈40°) than the traditional 60° angle. Conclusion: With the help of cardiac CT, we found that RAO 30° could better show the shape and length of the right ventricular pacing electrode, and LAO 40° could better show the positional relationship between the pacing electrode and the ventricular septum.

肺动脉高压(pulmonary hypertension,PH)是多种原因所致肺血管结构或功能改变,引起肺血管阻力和肺动脉压力升高的病理生理状态,可继发右心衰竭甚至死亡[1].《中国肺动脉高压诊断与治疗指南(2021版)》将PH血流动力学诊断标准定义为海平面、静息状态下,经右心导管检查(right heart catheterization,RHC)测定的肺动脉平均压(mean pulmonary artery pressure,mPAP)≥ 25 mmHg(1mmHg=0.133kPa)[2].对PH患者而言,右心室(right ventricular,RV)对PH的适应性改变是预后最重要的决定因素,而右心心力衰竭仍然是死亡的主要原因.因此,早期诊断、早期治疗尤为重要,可最大程度减轻患者症状,改善血流动力学等情况,阻止不良事件发生[3].

BackgroundDiabetes mellitus (DM) is associated with an increased risk of cardiovascular disease (CVD). Hence, early detection of cardiac changes by imaging is crucial to reducing cardiovascular complications.PurposeEarly detection of cardiac changes is crucial to reducing cardiovascular complications. The study aimed to detect the dynamic change in cardiac morphology, function, and diffuse myocardial fibrosis(DMF) associated with T1DM and T2DM mice models.Materials and methods4-week-old C57Bl/6J male mice were randomly divided into control (n=30), T1DM (n=30), and T2DM (n=30) groups. A longitudinal study was conducted every 4 weeks using serial 7.0T CMR and echocardiography imaging. Left ventricular ejection fraction (LV EF), tissue tracking parameters, and DMF were measured by cine CMR and extracellular volume fraction (ECV). Global peak circumferential strain (GCPS), peak systolic strain rate (GCPSSR) values were acquired by CMR feature tracking. LV diastolic function parameter (E/E’) was acquired by echocardiography. The correlations between the ECV and cardiac function parameters were assessed by Pearson’s test.ResultsA total of 6 mice were included every 4 weeks in control, T1DM, and T2DM groups for analysis. Compared to control group, an increase was detected in the LV mass and E/E’ ratio, while the values of GCPS, GCPSSR decreased mildly in DM. Compared to T2DM group, GCPS and GCPSSR decreased earlier in T1DM(GCPS 12W,P=0.004; GCPSSR 12W,P=0.04). ECV values showed a significant correlation with GCPS and GCPSSR in DM groups. Moreover, ECV values showed a strong positive correlation with E/E’(T1DM,r=0.757,P<0.001;T2DM, r=0.811,P<0.001).ConclusionThe combination of ECV and cardiac mechanical parameters provide imaging biomakers for pathophysiology, early diagnosis of cardiac morphology, function and early intervention in diabetic cardiomyopathy in the future.

目的 探讨高龄新型冠状病毒感染患者下肢静脉血栓和白细胞介素6(IL-6)、降钙素原、D-二聚体、C反应蛋白与预后的关系.方法 选取首都医科大学附属北京安贞医院2022年12月1日至2023年1月31日收治的新型冠状病毒感染患者223例,根据患者的预后分为死亡组(80例)和存活组(143例).比较死亡组与存活组患者静脉血栓情况、白细胞介素6(IL-6)、降钙素原、C反应蛋白水平及肺部炎症情况.并总结新型冠状病毒感染患者CT检查特征.结果 死亡组男性比例、IL-6、降钙素原、D-二聚体及重度肺炎比例均高于存活组,差异均有统计学意义(均P<0.001).下肢静脉血栓患者中,死亡组IL-6、降钙素原、D-二聚体水平高于存活组患者[338(143,901)ng/L比51(20,187)ng/L、0.82(0.23,4.96)μg/L比0.10(0.07,0.70)μg/L、7246(4515,14853)μg/L比2070(1182,4182)μg/L],差异均有统计学意义(均P<0.001).新型冠状病毒感染患者胸部CT显示病变主要位于两肺的外带区域及胸膜下,可跨越肺段的解剖分布,呈多叶浸润,CT主要表现为斑片状磨玻璃影,部分实变、纤维化.结论 高龄男性、存在下肢静脉血栓、伴有IL-6、降钙素原、D-二聚体升高的患者新型冠状病毒感染后有较高的死亡风险.

To assess the variation in left atrial (LA) and biventricular strain and its prognostic value in the course of suspected myocarditis, this retrospective study included 55 patients with clinically suspected myocarditis who underwent cardiac magnetic resonance (CMR) examinations at baseline and follow-up periods. Cine images were used for feature tracking analysis. Paired Student’s t test, McNemar’s test, and Cox proportional hazard regression were used for statistical analysis. The LA total emptying fraction was the only functional index that showed a statistically significant improvement. The initial LA peak’s late negative strain rate (SRa) was the only parameter with a significant predictive power of major adverse cardiac events under univariable (hazard ratio [HR] 2.396, 95% confidence interval [CI] 1.044–5.498, p = 0.039) and multivariable Cox survival analysis when adjusted by LA strain parameters (HR 5.072, 95% CI 1.478–17.404, p = 0.010), LA strain and functional parameters (HR 7.197, 95% CI 1.679–30.846, p = 0.008), and LA and biventricular strain and functional parameters (HR 10.389, 95% CI 2.250–47.977, p = 0.003). Thus, our findings indicate that CMR strain is useful for monitoring LA and ventricular function in suspected myocarditis, that LA function may recover preceding ventricular function changes, and that LA strain may serve as an incremental tool to predict adverse outcomes.

主动脉壁内血肿(intramural hematoma,IMH)是一种血管壁完整性受损且临床表现危急的疾病,约占急性主动脉综合征的5％～20％,在亚洲人群中则高达30％～40％[1].与主动脉夹层一样,按照Stanford标准将IMH分为A型(30％～40％)和B型(60％～70％).IMH临床进展多种多样,既可发生吸收消退,又可快速进展为夹层、动脉瘤或破裂,甚至可在吸收后再次进展,严重危及患者生命,因此及时诊断及动态监测其演变显得尤为重要.多排CT(multidetector CT,MDCT)具有安全无创、可重复性强的优点,是目前IMH的首选影像学检查,人工智能、计算流体力学的快速发展有望进一步挖掘它的优势,本综述就MDCT在IMH诊断及预后中的价值展开概述,以便临床尽早识别、干预,减少不良事件的发生.

Objective:To investigate the characteristics of early myocardial mechanics changes in diabetic cardiomyopathy (DCM).Method:Sixty healthy 4-week-old male C57BL/6J mice were randomly divided into the T2DM group ( n=30) and the control group ( n=30). The T2DM group was fed with high-fat diet for 4 weeks, and accepted injection of a single high-dose of streptozotocin (STZ) intraperitoneally. Finally, the model was established successfully in 23 mice. The control group was fed with a normal diet and treated with citrate buffer liquid at an equal dose as T2DM group. Then, nine mice were randomly selected from each of the two groups every 4 weeks until the end of the 24th week. Six of the nine mice were randomly selected to perform 7.0 T MR scanning after measuring blood glucose and body weight. Cine images were acquired through cardiovascular MR feature tracking (CMR-FT). The obtained parameters included the left ventricle global peak circumferential strain (LV-GPCS), left ventricle global peak radial strain(GPRS) and the ejection fraction (EF), etc. The rest three mice were sacrificed for observation of the changes of interstitial fibers and micro-vessels in myocardial tissue with Sirius red staining. One-way analysis of variance (ANOVA) and t test were used for comparison. Results:There were significant differences in blood glucose levels between the two groups during the observation period ( P<0.05). In the 4 th-24 th week, the value of GPCS in T2DM group showed a downward trend, and the difference was statistically significant ( F = 8.23, P<0.001). Compared with the control group, the value of GPCS in T2DM group was statistically significant at the 20 th and 24 th week (the 20 th week: -11.4%±2.1% in the T2DM group vs. -14.3%±1.9% in the control group, t=2.54, P=0.029;the 24 th week: -12.3%±1.7% in the T2DM group vs. -14.6%±1.8% in the control group, t=2.35 , P=0.040), while the EF value was different at the 24 th week (51%±5% in the T2DM group vs. 62%±6% in the control group, t=3.38, P=0.007). There was no significant difference in the GPRS of the T2DM mice group over time or compared with the controls ( P>0.05). Moreover, the pathological results showed that the myocardial interstitial fibers in the T2DM group had remarkably increased since the 12 th week. Conclusions:The alterations in myocardial interstitial fibers and myocardial contractility appeared early in T2DM mice. Especially, the left ventricle global peak circumferential strain value is superior to the EF value in reflecting the early changes in DCM.

目的:探索妊娠期主动脉夹层(GAD)的临床特点和主动脉CTA的影像特点.方法:回顾分析44例GAD的临床资料和主动脉CTA影像,与100例剖宫产患者的临床资料和22例年轻女性的正常主动脉CTA的影像资料作对照.结果:44例GAD的主要临床表现为胸背痛,合并马方综合征9例,慢性高血压12例,糖尿病5例,低蛋白血症14例,主动脉二叶瓣畸形1例,梅毒1例,活动性关节炎3例.GAD组和剖宫产孕妇组的舒张压、收缩压和脉压差均差异有统计学意义(P＜0.05);GAD组和剖宫产孕妇组身高,差异有统计学意义(P＜0.05);GAD组和剖宫产孕妇组妊娠次数和产次数,差异有统计学意义(P＜0.05);GAD组和年轻女性正常组主动脉弓长度,差异有统计学意义(P＜0.05).结论:孕妇应进行主动脉夹层风险评估及体检.除传统的心血管危险因素,妊娠期血压、多次妊娠、孕妇身高、主动脉弓长度等风险因素可能也起着重要作用.

目的 观察心电散点图鉴别诊断房颤伴宽QRS波心动过速的临床应用价值.方法 选取2021年1月-2022年1月在我院诊治的73例房颤伴宽QRS波心动过速患者为研究对象,采用单象限心电散点图分析鉴别房颤伴宽QRS波心动过速,观察房颤伴宽QRS波心动过速分布情况、心电散点图不同心律失常B线斜率.结果 73例房颤伴宽QRS波患者中,持续性心房颤动占24.66％,房颤伴室早室速占20.55％,房颤伴差传占30.14％,房颤伴束支传导阻滞占9.59％,房颤伴心室起搏占15.07％;房颤伴室早室速及房颤伴心室起搏B线斜率与持续性房颤、房颤伴差传、房颤伴束支传导阻滞比较,差异有统计学意义(<0.05);房颤伴室早室速与房颤伴心室起搏两组B线斜率比较,差异有统计学意义(<0.05);但持续性房颤、房颤伴差传、房颤伴束支传导阻滞之间B线斜率比较,差异无统计学意义(>0.05).结论 心电散点图鉴别诊断房颤伴宽QRS波心动过速具有重要的临床应用价值,可准确的进行鉴别诊断,可为临床治疗提供一定的参考依据.

目的:探讨心血管专业型CT冠状动脉血管成像的应用可行性及用于体检的意义.方法:选择2019年9月至2021年4月,在本中心接受健康体检的827例人员为研究对象.进行冠状动脉CTA检查,分析不同年龄段、不同性别及不同体质指数冠状动脉狭窄病变的分布情况,并对成像质量进行评估.结果:GE专用心血管CT冠状动脉图像质量评分99.7％受检者≥4分.在不同年龄段分布方面,年龄＞50岁体检者的冠状动脉狭窄病变发生率更高(P＜0.05);趋势性检验结果显示,随着年龄升高,右冠状动脉、前降支、回旋支狭窄程度越高(P趋势＜0.001),男性冠状动脉狭窄程度明显高于女性,差异均有统计学意义(均P＜0.001);随着BMI升高,右冠状动脉、前降支、回旋支狭窄程度越高(均P＜0.001).结论:心血管专业型CT冠状动脉成像可进行有效的早期筛查,且显像质量高,在冠状动脉病变的早期诊断和治疗管理的选择中有重要应用价值.