ObjectiveTo investigate the prevalence status and characteristics of dyslipidemia and cardiovascular risk factors in urban communities of Chengdu city. MethodsBy cluster sampling, a population of 994 inhabitants were selected from 14 urban communities in Chengdu city between February and October 2010. We investigated patients between 35-70 years old who lived in the area over 2 years, by using questionnaires survey, physical examination, and laboratory tests. According to the age, the respondents were divided into three groups: young group ( ≤ 44 years old), middle-aged group (45-59 years old) and elderly group ( ≥ 60 years old). We further investigated the major cardiovascular risk factors for hyperlipidemic patients. ResultsThe prevalence of dyslipidemia in Chengdu urban area was 28.47% (283/994), and standardized prevalence rate was 24.65% (male, 24.68%; female, 30.91%). The prevalence rate between male and female had significant diTherence (χ2=4.513, P=0.034). Female elderly group and middle-aged group had a significantly higher prevalence than the young group (P<0.05), while the male prevalence had no statistical diTherences among all age groups (P>0.05). Hypertension was most common in patients with dyslipidemia (male, 50.04%; female, 52.41%) followed by diabetes and coronary heart disease. There was no difference between male and female in the prevalence of dyslipidemia accompanied hypertension, history of stoke and coronary heart disease, abdominal obesity,or obesity (P>0.05). Higher prevalence with smoking and drinking was in male patients (P<0.05). ConclusionThe prevalence of dyslipidemia is relatively high in urban communities of Chengdu city. According to the region of hyperlipemia epidemiological characteristics and risk factors, by using comprehensive intervention measures, we can reduce the prevalence of dyslipidemia.
We have tried to explore the energy loss (EL) within the left ventricle in hypertension by using vector flow mapping (VFM) to detect left ventricular hemodynamic changes in hypertensive patients as early as possible and reflect changes of left ventricular function in hypertension by using EL. Twenty-one hypertensive patients with increased left ventricle mass index (LVMI), 14 hypertensive patients with normal LVMI and 22 control subjects were enrolled in this study. Systolic and diastolic EL derived from VFM within the left ventricle and E/e' by dual Doppler were recorded and analyzed. Compared with those of the controls, diastolic and systolic EL were significantly increased in hypertensive group (P<0.05). In diastole, EL=0.439×SBP (systolic blood pressure)–8.349; in systole, EL=0.385×SBP+0.644×LVMI–10.854. And the EL was positively correlated with E/e', but there was no significant correlation between EL and ejection fraction (EF) in the pooled population. The study shows that the increased EL can help us detect changes of left ventricular hemodynamic in hypertensive patients. It needs further investigation to prove whether EL within the left ventricle could be a new parameter to evaluate diastolic function. SBP and LVMI are the independent predictors for systolic EL, while SBP is the independent predictor for diastolic EL.
We tried to explore the value of contrast echocardiography (CEcho) on evaluating hypertrophic cardiomyopathy (HCM) with the inferior wall hypertrophy. A total of 114 patients with HCM were investigated. All the patients received CEcho and routine echocardiography (Echo), and 45 of them received cardiac magnetic resonance (CMR) and 47 of them received Holter. The frequency and percentage of inferior wall hypertrophy were analyzed in HCM patients, as well as the structure and function. The results showed that: (1) Inferior wall hypertrophy was detected in 55 patients (48%) by Echo, while 68 patients (60%) by CEcho. (2) There was no significant difference between CMR and CEcho in the measurement of inferior wall at end-diastole and end-systole. Thickness of inferior wall by CEcho tended to be higher than CMR. However, the inferior wall thickness measured by Echo was obviously lower than that by CMR (P < 0.05) and CEcho ( P < 0.05). (3) Bland-Altman plot suggested good consistency between CEcho and CMR in measuring inferior wall thickness. 95% CI of mean differences in inferior wall thickness between CEcho and CMR were smaller in HCM patients as compared with that between Echo and CMR. Unary linear regression analysis showed good degree of fitting between CEcho and CMR. (4) Holter showed that HCM patients with inferior wall hypertrophy were likely to have higher incidence of premature ventricular complexes (PVC) ≥ 500/24 h. We demonstrate that CEcho is rather sensitive in detecting inferior wall hypertrophy. Echo may underestimate the inferior wall thickness. The risk of ventricular premature beats may increase in HCM patients with inferior hypertrophy.
This study aims to explore the intraventricular pressure difference (IVPD) within left ventricle in patients with paroxysmal atrial fibrillation (PAF) by using the relative pressure imaging (RPI) of vector flow mapping (VFM). Twenty patients with paroxysmal atrial fibrillation (PAF) and thirty control subjects were enrolled in the study. Systolic and diastolic IVPD derived from VFM within left ventricle and conventional echocardiographic parameters were analyzed. It was found that the B-A IVPD of left ventricle in PAF patients showed the same pattern as controls—single peak and single valley during systole and double peaks and double valleys during diastole. Basal IVPD was the main component of base to apex IVPD (B-A IVPD). The isovolumetric systolic IVPD was associated with early systolic IVPD, early systolic IVPD was associated with late systolic IVPD, and late systolic IVPD was associated with isovolumic diastolic IVPD (all P < 0.05). The B-A IVPD and basal IVPD during isovolumetric systole, early systole, late systole and isovolumetric diastole in PAF patients significantly decreased (all P < 0.05). The study shows that the B-A IVPD pattern of the PAF group is the same as controls, but systolic B-A IVPD and basal IVPD are significantly reduced in PAF patients. VFM-derived RPI can evaluate left ventricular IVPD in PAF patients, providing a visually quantitative method for evaluating left ventricular hemodynamic mechanics in the patients with PAF.
In this study we performed Tissue Doppler Imaging (TDI), two-dimensional speckle tracking imaging (2D-STI) and three-dimensional speckle tracking imaging (3D-STI) on enrolled healthy, overweight and obese groups (34 subjects in each group), respectively, to analyze cardiac structure and its function. Compared with healthy group, global longitudinal strain (GLS), global circumferential strain (GCS), global area strain(GAS) and global radial strain (GRS) decreased progressively (P＜0.05). The ratio of early diastolic mitral inflow velocity to global early diastolic strain rate of left ventricle (E/e′sr) (r=0.466, P＜0.001), GLS(r=0.502, P＜0.001), GCS(r=0.426, P＜0.001), GAS(r=0.535, P＜0.001) and GRS(r=-0.554, P＜0.001) were correlated with body mass index (BMI). E/e′sr (r=0.37, P=0.003), GLS(r=0.455, P＜0.001), GCS(r=0.282, P=0.02), GAS(r=0.412, P＜0.001) and GRS (r=-0.471, P＜0.001) were correlated with free fatty acid (FFA). Stepwise multiple linear regression revealed that BMI was independently correlated with E/e′sr, GLS, GCS, GAS and GRS. Waist to hip ratio (WHR) was independently correlated with GLS, GCS, GAS and GRS. FFA was independently correlated with E/e′sr(P＜0.05). The study showed that cardiac structure changed and impaired left ventricular global systolic and diastolic function in overweight and obes population. Moreover, BMI, WHR and FFA may be independent influence factors of cardiac function in overweight and obese population.
ObjectiveTo analyze systematic reviews (SRs) and meta-analyses on the efficacy of pharmacological interventions in the prevention of contrast-induced acute kidney injury (CI-AKI) after percutaneous coronary intervention (PCI). MethodsWe searched the PubMed, The Cochrane Library, EMbase, CNKI, CBM, WanFang Data, and VIP databases to identify SRs and meta-analyses on the pharmacological interventions aimed at preventing CI-AKI after PCI from inception of the databases to February 2022. Two researchers independently screened the literature and extracted data. The PRISMA statement, AMSTAR 2 tool, and GRADE system were adopted to evaluate the reporting quality, methodological quality, and evidence quality of the findings of the included SRs and meta-analyses. ResultsA total of 14 SRs and meta-analyses were identified. Among the drugs used were statins, N-acetylcysteine, sodium bicarbonate, Dan-hong injection, vitamins, salvianolate, adenosine antagonists, nicorandil, allopurinol, alprostadil, furosemide, trimetazidine, probucol, and brain natriuretic peptide. Most of the studies had relatively comprehensive coverage of the items, with the PRISMA scores ranging from 18 to 24.5. The main issues of reporting quality were protocol and registration, search, and funding. The methodological quality of the SRs and meta-analyses was generally low. Items 2 and 7 were the key items with poor scores, and the non-critical items with poor scores were items 3, 10, and 16. All drugs, except furosemide, decreased the incidence of CI-AKI. The quality of evidence ranged from medium to very low according to GRADE. Conclusion Most of the single drugs or drugs combined with hydration show the potential to prevent CI-AKI, however, the overall methodological quality of the included studies is relatively low, and the strength of evidence is generally low.
【Abstract】 Objective To study the image of the muscular and cutaneous branches of supratrochlear artery by internal and external carotid angiography and to design the frontal flap for nasal reconstruction. Methods The muscular and cutaneous branches of supratrochlear artery of 30 adults were investigated through internal and external carotid angiography and three-dimensional reconstruction of vessels to explore the courses of branches of supratrochlear artery and their communication with supraorbital artery. According to image observation, the frontal flap was designed and used to perform nasal reconstruction in 11 cases of nasal defects, including 7 males and 4 females with an average age of 23 years (range, 15-48 years). The nasal defect ranged from 3.0 cm × 2.5 cm to 5.0 cm × 3.5 cm. Results Internal carotid angiography and three-dimensional imaging of the vessels showed that supratrochlear artery was found in 30 patients, with a diameter of (0.9 ± 0.6) mm. The superficial cutaneous branch appeared constantly with a diameter of (0.7 ± 0.3) mm. Deep muscular branch traveled among frontal muscle, with a diameter of (0.5 ± 0.5) mm and a length of (32.0 ± 6.2) mm, and it was missing in 4 patients, the branches communicated with each other and with supraorbital artery. All flaps survived with good appearance and without cartilage exposure. After 4 months to 3 years of follow-up, the postoperative aesthetic appearance and function of nasal tip, alar, and columella were satisfactory; the height and slope length of the external nose were moderate; and the reconstructed nose had good texture and normal ventilation function without constriction of naris. Conclusion Imaging studies support the fact that supratrochlear artery has constant cutaneous branch. The application of frontal flap pedicled with cutaneous branch can improve the effectiveness of nasal reconstruction.