ABSTRACT
were measured at the end of inspiratory.ResultsThe differences of following parameters were statistically significant between the healthy control group, mild PH group, moderate PH group and severe PH group: velocity time integral of ventricular systolic wave (SVTI), velocity time integral of ventricular diastolic wave (DVTI), AR, AR/S, ARVTI/SVTI, AR/(S+D), ARVTI/(SVTI+DVTI,F=2.940, 2.838, 3.373, 7.681, 3.478, 12.052, 4.806;P<0.05,<0.05,<0.05,<0.01,<0.05,<0.01,<0.01). Correlation analysis showed that ratio of AR/(S+D) was positively correlated with pulmonary artery mean pressure (r= 0.575,P<0.01). ConclusionsThe ratio of AR/(S+D) of MHV Doppler flow spectra was correlated with pulmonary artery mean pressure. The ratio increased along with the increasing of pulmonary pressure in CHD patient. The Doppler echocardiographic detection of MHV flow had a certain reference value for the diagnosis of PH. The ratio of AR/(S+D) could be a new non-invasive parameter for evaluating PH.
ABSTRACT
BACKGROUND:Traditional therapeutic methods of diabetes combined with lower limb artery obturation showed poor outcomes such as drug or intervention.Stem cell transplantation is a new method to treat this disease in recant years,and has obtained good outcomes in the clinic.Evaluating the therapeutic outcomes of stem cell transplantation has great damage and cost much.Thus,color Doppler ultrasound is used to examine non-invasion in the artery of the lower extremity,which shows important clinical value.OBJECTIVE:To evaluate improvement of lower extremity artery lesion following autologous peripheral blood stem cell transplantation using color Doppler ultrasound,and to compare with results of angiography.METHODS:A total of 41 patients diagnosed as having diabetes combined with lower limb artery obturation were included.Following administration of recombinant human granulocyte-colony stimulating factor(rhG-CSF)(150 μg/d)for 5 days,peripheral blood mononuclear cells(PBMNCs)were mobilized and harvested by using a separator at day 5 to prepare stem cell suspension,and which were injected intramuscularly in the diseased extremities(3×109 per limb).The clinical and laboratory findings were monitored every week for 3 months to 1 year following stem cell transplantation.RESULTS AND CONCLUSION:After stem cell transplantation,severe pain lameness,local cool-feeling and ulcer were significantly improved,and ankle-brachial index was increased obviously(P＜0.01).Color Doppler ultrasonography measurement showed that peak systolic velocity in diseased extremities was significantly increased post-transplantation(P＜0.01).Following transplantation,blood flow of the lower limb arterial canal was improved to different extents;collateral vessels were increased surrounding obstructed artery and in muscles.Spiral CT for new collateral vessel formation were showed increased.No related complication or adverse effects were observed in 41 patients during observation.Results indicated that color Doppler ultrasound can exactly rapidly examine and assess blood transport improvement in the lower limbs following stem cell transplantation,which is identical to results from angiography.It also provides reliable evidences for the diagnosis on the transplantation of stem cells for the treatment of diabetes combined with lower limb artery obturation.
ABSTRACT
A total of 160 elderly patients with Ⅰ -Ⅲ essential hypertension were enrolled in the study and examined with high-frequency color Doppler ultrasonography (America ATL Company HDI3500 type color ultrasonoscope). Common carotid artery (CCA), internal carotid artery and external carotid artery (ECA) were detected, including carotid artery intima-media thickness (CAIMT) and hemodynamic index. At the same time, 110 healthy elders were taken as contrast group. With the increased degree of hypertension, CAIMT was gradually enhanced and the most obviously in patients of grade Ⅲ hypertension. There were significant differences in grade Ⅲ, Ⅱ, Ⅰ and contrast group (P
ABSTRACT
Objective To study the changes in parameters of blood flow and frequency-spectrum appearance in superior mesenteric artery (SMA)and inferior mesenteric artery(IMA) in the patients with ulcerative colitis(UC). Methods The parameters of blood flow and frequency-spectrum of SMA and IMA in 16 cases of patients with UC were observed before and after treatment, and 10 healthy volunteers served as control. Results The parameters of blood flow of IMA in patients with left half colon UC (9 cases) and all colon UC (7 cases) significantly changed after treatment(P