Objective To evaluate left atrial(LA)function in patients with prophase essential hypertension (EH)by left atrial volume tracking(LAVT)method.Methods Thirty prophase EH patients and 35 healthy subjects(control group)were enrolled in this study.Ultrasound LAVT(Hitachi EUB-6500)was applied to display and analyze the LA volume loop imaging on the standard LV apical two and four chamber views.The maximal LA volume at end-systole(LAVmax),LA volume at the onset of ECG-P wave(LAVP),the minimal LA volume at end-diastole(LAVmin)from the LA volume loop were recorded,and body surface area was used to revise these volume indexs(LAVImax,LAVIp,LAVImin).LA pass,act and total empting volume(LAVIpass,LAVIact,LAVItotal)and empting rate(%LAVIpass,%LAVIact,%LAVItotal),effective pass and act erupting rate(%eLAVIpass,%eLAVIaet),and the proportionality of pass empting volume and act empting volume were caculated.Results The LAVIp,LAVIact,LAVItotal,%LAVIact,%LAVItotal,%eLAVIact in the prophase EH group were significantly higher than those in the control group,wheras the LAVIpass,%LAVIpass,%eLAVIpass,LAVIpass/act were lower(all P＜0.05,or P＜0.01).Conclusions The LA volume change in prophase EH is the act empting volume increased at end-diastole in main,LAVT is a potientially useful tool to evaluate the function of LA.

Transthoracic echocardiographic characteristics of 17 cases of cardiac amyloidosis (CA), a rare disease in China, were analyzed in order to improve the understanding of the disease. Seventeen cases of biopsy-proven CA, admitted to Wuhan Union Hospital from June 1994 to September 2008 were retrospectively reviewed. Twenty normal volunteers served as control group. Left atrial and ventricular functions and mitral inflow velocity were measured by two-dimensional, and Doppler echocardiography, and tissue Doppler imaging (TDI)-derived peak systolic wall motion velocities (Sv), peak early diastolic wall motion velocities (Ev), and peak late diastolic wall motion (Av) were measured at the septum, lateral, inferior and anterior corners of mitral annulus from the apical 4- and 2 chamber views. Compared with the control group, the interventricular septal thickness (IVSd), the left ventricular posterior wall (LVPWd), right ventricular transverse diameter (RVTDd) near the end of diastole and the interauricular septum thickness (IASs), left atrial anteroposterior diameter (LAADs), right atrial transverse diameter (RATDs) near the end of systole were increased significantly (all P<0.05) and left ventricular ejection fraction (LVEF) decreased (P<0.05) in the CA group. Compared with the control group, Sv, Ev at each wall and Av at almost all walls were significantly decreased in the CA group. In the CA group, Myocardial echoes of interventricular septum and free wall of left ventricle were enhanced evidently and distributed unevenly. The echoes presented as ground glass-like images, with some spotty hyper echoes. Both atria were enlarged, and LVEF decreased, with diastolic function impaired, and mild-moderate hydropericardium found in the CA group. It was concluded that echocardiography was a relatively sensitive and highly specific non-invasive method for the diagnosis of CA.
Amyloidosis/*ultrasonography ; Cardiomyopathies/*ultrasonography ; Case-Control Studies ; Echocardiography ; Echocardiography, Doppler/*methods ; Retrospective Studies ; Sensitivity and Specificity

A simple,rapid and sensitive liquid chromatography-mass spectrometry (LC-MS) method was developed for the determination of salidroside in rat plasma and study of its pharmacokinetics after oral administration of suspension of Erzhi Wan and Fructus Ligustri lucidi into Wistar rats.Plasma sample of 200 μL was extracted with acetic etherisopropanol (2:1) and the extraction was performed on a Kromasil C18 column (150 mm×4.6mm,5 μm) with the mobile phase of methanol-water (41:59,v/v) within a run time of 6.0min.The analyte was monitored with positive electrospray ionization (ESI) by selected ion monitoring (SIM) mode.The target ions were m/z 323.05 for salidroside and m/z 411.05 for internal standard (IS) geniposide.A good linear relationship was obtained over the range of 5.0-500.0 ng/mL and the lower limit of quantification was 5.0 ng/mL.The validated method was successfully applied to the pharmacokinetic study of salidroside in rat plasma after oral administration of suspension of Erzhi Wan and Fructus Ligustri lucidi.

Objective To assess the motion asynchrony of left ventricle(L V)wall in patients with chronic heart failure(CHF)by ultrasound two dimensional speckle-tracking imaging(2D-STI).Methods Thirty-seventy patients with CHF were divided into two groups:CHF1 group,22 with QRS≤120 ms;CHF2 group,15 with QRS ＞120 ms.Thirty healthy subjects(control group)were enrolled.2D-STI was applied to display and analyze the strain rate imaging on the three standard LV apical views and parasternal LV short-aix views,respectively.The time from the onset of QRS complexes to peak strain rate during systole(Tsrs)and early-diastole(Tsre)were measured from the longitudinal,radial and circumferential vector respectively(Tsrsl,Tsrel,Tsrsr.Tsrer,Tsrsc,Tsrec).The standard deviation of all above parameters(Tsrsl-SD.Tsrel-SD,Tsrsr SD,Tsrer-SD,Tsrsc-SI).Tsrec-SD)and the maximal temporal difference(Tsrsl-diff.Tsrel-diff,Tsrsr-diff,Tsrer-diff,Tsrsc-diff,Tsrec-diff)of 18 segments were calculated as indicator of dyssynchrony.Results The systolic dyssynehrony indices Tsrsl-SD,Tsrsl-diff,Tsrsr-SD,Tsrsr-diff,Tsrsc-SD Tsrsc-diff and diastolic dyssynchrony indices Tsrel-SD,Tsrel-diff,Tsrer-SD,Tsrer-diff,Tsrec-SD,Tsrec-diff were significantly higher in the CHF1 and CHF2 group than those in the control group(all P＜0.05).Compared with the values in the CHF1 group,the systolic indices of dyssynchrony and the radial and circumferential diastolic indicator of dyssynchrony in CHF2 group were longer(P＜0.05).Conclusions The longitudinal,radial and circumferential systolic and diastolic dyssynchrony of the LV were commonly existed in patients with CHF,regardless of QRS duration.2D-STI is a potientially useful tool to evaluate the systolic and diastolic synchrony of the LV wall motion in patients with CHF.

Objective To assess the characteristics of left ventricular(LV) systolic dyssynchrony in patients with chronic heart failure (CHF) using two dimensional speckle-tracking imaging(2D-STI) and validate the correlation between LV systolic dyssynchrony and its ejection fraction (EF) measured by traditional two dimensional echocardiography. Methods Forty-two patients with CHF, which were divided into group CHF1 with 35% ＜EF≤50% and group CHF2 with EF≤35%, and 35 healthy subjects as control group were enrolled in this study. Two-dimensional echocardiography Simpson's method was used to measure EF of LV. The time from the onset of QRS complexes to systole peak strain rate from the longitudinal, radial and circumferential vectors(Tsrsl, Tsrsr, Tsrsc)was recorded and measured using 2D-STI, respectively. The standard deviation and the maximal temporal difference of Tsrsl, Tsrsr, Tsrsc (Tsrsl-SD,Tsrsr-SD,Tsrsc-SD,Tsrsl-diff,Tsrsr-diff, Tsrsc-diff)of 18 segments were calculated as indicator of LV systolic dyssynchrony. Results The indices of LV systolic dyssynchrony Tsrsl-SD,Tsrsl-diff, Tsrsr-SD, Tsrsr-diff,Tsrsc-SD,Tsrsc-diff in group CHF1 and CHF2 were significantly higher than those in the control group (P<0.05). Compared with group CHF1, those indices in CHF2 were significantly longer (P<0.05). Meanwhile, Tsrsl-SD, Tsrsr-SD, Tsrsc-SD(r = - 0.904～0.912, all P<0.05) and Tsrsl-diff, Tsrsr-diff, Tsrsc-diff(r = - 0.916～0.967, all P<0.01) had singnificantly negative correlations with LVEF, and the correlation coefficients between radial and circumferential 2D-STI dyssynchrony parameters and LVEF were higher than those between the longitudinal parameters and LVEF. Conclusions 2D-STI is a useful modality to evaluate the LV systolic asynchrony of the CHF and there is a good correlation between LVEF and the LV systolic dyssynchrony indices derived from 2D-STI.

Objective To evaluate left atrial(LA) function in patients with prophase type 2 diabetes mellitus(T2DM) combinated with or without hypertension using left atrial volume tracking method(LAVT). Methods Thirty-one simple T2DM(T2DMI group) ,21 T2DM accompany with hypertension(T2DM2 group) and forty-five healthy subjects (control group) were enrolled in this study. Ultrasound LAVT(EUB-6500, Hitachi Medical Corporation) was applied to display and analyzed the LA volume loop imaging on the standard LV apical two and four chamber views. The maximal and the minimal LA volume (LAVmax, LAVmin) and the volume before LA contraction (LAVp) were recorded from the LA volume loop. The body surface area was used to correct these volume indexs. The LA reservoir function was assessed by calculating the total of LA filling volume (LAVItotal) and the expansion index(iLAVIe). The passive and active emptying percentage of the total emptying volume(LAVIpass, LAVIact) and the emptying index(iLAVIpass,iLAVIact) were caculated as the parameters of the LA conduit and booster pump function. Results Compared with the values in the control group, the LAVhotal,LAVIact were significantly higher and the LAVlpass,iLAVlpass were lower in the T2DM group (all P<0.05) ,while the iLAVIact was higher only seen in the T2DM2 group(P<0. 05). The LAVlact, iLAVIact were higher and the LAVIpass was lower in T2DM2 group than those in the T2DM1 group (all P<0.05). Conclusions The LA conduit hypofunction in primary in the prophase T2DM,when combinated with hypertension the LA constriction function compensatorily increased, LAVT can evaluate the function of LA in patients with T2DM accurately and rapidly.

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