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1.
Article in Chinese | WPRIM | ID: wpr-745156

ABSTRACT

Objective To establish a pediatric echocardiographic normal reference system based on clinical BigData and overcome limitations such as insufficient sample size and diverse in methods of normalization . Methods Measurements were extracted from total 71 831 pediatric echocardiography reports in the past 5 years by using the Natural Language Processing ( NLP) technology . Among them ,a total of 12 732 reports were labeled as normal and were used to establish the normal reference system . A local regression ( LOESS ) approach was used to optimize both the reference value and variance across 5 grow th variables ( aortic diameter ,left atrium diameter ,left ventricle end‐diastolic endocardial diameter ,left main coronary artery diameter ,and right main coronary artery diameter) . T wo Z scores adjusted for age/sex and body surface area ( BSA ) were established respectively . In addition , 4 459 echocardiography reports with BSA information were used to evaluate these two Z scores . Results T wo Z scores generated from 4 459 reports showed pretty good normal distribution . T here were close strong correlations among two Z scores with Z scores generated based on the Pediatric Heart Network ( PHN ) . T he average correlation coefficient between BSA‐adjust Z scores and PHN Z scores was 0 .954 . T he average correlation coefficient between age/sex‐adjust Z scores and PHN Z scores was 0 .895 . T he results of this project were available as Z score calculator using the following link :http ://hdb .nbscn .org/zscore . Conclusions BigData provides a more efficient and better approach to establish normal reference systems in pediatric echocardiography .

2.
Article in Chinese | WPRIM | ID: wpr-695913

ABSTRACT

Objective To observe the clinical efficacy of plum blossom needle plus oral administration of Xiao Luo Li Wan in treating nodular prurigo. Method Seventy patients with nodular prurigo were randomized into a treatment group and a control group, 35 cases each. The control group was intervened by oral administration of Cetirizine hydrochloride tablets and external use of Mometasone furoate cream, while the treatment group was additionally treated with plum blossom needle plus orally taking Xiao Luo Li Wan. After 8-week treatment, the clinical efficacies of the two groups were observed and compared. Result The total effective rate was 91.4% in the treatment group versus 62.9%in the control group, and the between-group difference was statistically significant (P<0.01). Conclusion Plum blossom needle plus oral administration of Xiao Luo Li Wan can produce a significant efficacy in treating nodular prurigo.

3.
Article in Chinese | WPRIM | ID: wpr-254178

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the sensitivity and specificity of hepatic ultrasonography (US) for the diagnosis of hepatic steatosis in obese children, using ¹H magnetic resonance spectroscopy (¹H MRS) as the reference standard.</p><p><b>METHODS</b>A total of 162 obese children with age of 10.5 ± 2.2 years and BMI of 28 ± 4 were enrolled in this study. They accepted hepatic US and (1)H MRS examinations. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of US were calculated for the overall presence of hepatic steatosis by comparison with ¹H MRS results.</p><p><b>RESULTS</b>Using quantitative criteria of liver fat content (LFC) >5% determined by (1)H MRS, 95 children(58.6%)were diagnosed as having hepatic steatosis. The sensitivity and specificity of US in diagnosing steatosis were 91.6% (87/95) and 50.7% (34/67) respectively, with PPV of 72.5% (87/120), and NPV of 81.0% (34/42). Considerable overlap in LFC measured by ¹H MRS was observed between different grades from US findings: absent (LFC interquartile range: 1.3%-3.9%), mild (2.4%-10.7%), moderate (7.1%-20.2%) and severe (7.6%-28.8%) steatosis.</p><p><b>CONCLUSIONS</b>The US can yield a high sensitivity and low specificity in the diagnosis of hepatic steatosis in obese children, suggesting it can be used as a screening tool for hepatic steatosis. To improve diagnostics, ¹H MRS is needed to determine LFC.</p>


Subject(s)
Adolescent , Child , Child, Preschool , Fatty Liver , Diagnostic Imaging , Female , Humans , Magnetic Resonance Spectroscopy , Male , Obesity , Predictive Value of Tests , Ultrasonography
4.
Article in Chinese | WPRIM | ID: wpr-336769

ABSTRACT

<p><b>OBJECTIVE</b>To investigate partial anomalous pulmonary venous connection (PAPVC) with echocardiography.</p><p><b>METHODS</b>The right ventricular volume overload was detected by routine echocardiography in 37 child patients, who underwent further echocardiography to find the abnormal locations of pulmonary vein opening at superior, inferior vena cava and right atrium. The ultrasound results were compared with surgical findings.</p><p><b>RESULTS</b>In 30 patients the ultrasound diagnosis was consistent with surgery results, 7 were misdiagnosed by ultrasound with a detective rate of 81.1 %. All 37 PAPVC patients presented varying degrees of right heart enlargement; PAPVC combined with atrial septal defect (ASD) was found in 34 cases.</p><p><b>CONCLUSION</b>The possibility of PAPVC should be considered when unexplained right heart volume overload was detected by echocardiography. Superior, inferior vena cava and right atrium should be inspected when the pulmonary veins were not seen in echocardiography.</p>


Subject(s)
Child , Child, Preschool , Echocardiography , Female , Heart Atria , Congenital Abnormalities , Diagnostic Imaging , Heart Septal Defects, Atrial , Diagnostic Imaging , Humans , Infant , Male , Pulmonary Veins , Congenital Abnormalities , Diagnostic Imaging
5.
Chinese Journal of Pediatrics ; (12): 935-938, 2012.
Article in Chinese | WPRIM | ID: wpr-348501

ABSTRACT

<p><b>OBJECTIVE</b>To explore the management of fungal pyelonephritis in infants.</p><p><b>METHOD</b>Data from 5 cases with fungal pyelonephritis, including the clinical situation, laboratory examination, feature of imaging, and treatment were analyzed.</p><p><b>RESULT</b>All the 5 cases were preterm and low birth weight infants. In 3 cases the disease was unilateral, in 2 cases were bilateral, and acute renal failure occurred. Fungus balls presented on imaging. Urine culture was positive of Candida albicans. Treatment with percutaneous nephrostomy, irrigation and antifungal agent were associated with good prognosis. Only 1 case died. The surviving patients were followed up for 10 - 20 months and the results showed normal growth and development. B-mode ultrasound examination did not show any malformation of the urinary system.</p><p><b>CONCLUSION</b>Fungal pyelonephritis was commom in preterm infants. Candida albicans was the major pathogenic microorganism. Percutaneous nephrostomy and drainage were effective in patients with urinary obstruction in relief of obstruction, early diagnosis and control of infection.</p>


Subject(s)
Acute Kidney Injury , Therapeutics , Amphotericin B , Antifungal Agents , Therapeutic Uses , Candida albicans , Candidiasis , Diagnosis , Therapeutics , Chymotrypsin , Female , Humans , Infant , Infant, Newborn , Infant, Premature , Male , Nephrostomy, Percutaneous , Pyelonephritis , Diagnosis , Microbiology , Therapeutics , Treatment Outcome , Ultrasonography, Doppler, Color , Ureteral Obstruction , Therapeutics , Urine , Microbiology
6.
Article in Chinese | WPRIM | ID: wpr-310349

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate transesophageal echocardiography (TEE)-guided periventricular device closure for treatment of ventricular septal defects (VSD) in children.</p><p><b>METHODS</b>The Amplatzer device was applied, the size of which was 1 or 2 mm larger than the VSD size assessed by TEE. Via a small lower sternotomy, the device was introduced through right ventricular surface to close the VSD under continuous TEE guidance without cardiopulmonary bypass.</p><p><b>RESULT</b>The procedures were successful in 6 cases, including 4 cases with muscular VSD and 2 cases with perimembranous VSD. The diameter of VSD was 3 mm to 10 mm and one case had pulmonary hypertension. One case of multi-muscular VSD with transposition of the great arteries failed to the treatment because the mitral open was interfered by the device. One case had bundle branch block in ICU stay and returned to normal without special therapy. The average operation time was 30 min and blood loss was 5 approximately 20 ml, no patients required blood transfusion; the average length of ICU stay was 24 h. Patients were discharged 1 to 2 d postoperatively. At a median follow-up for 12 months, all patients were asymptomatic and had no residual ventricular shunts.</p><p><b>CONCLUSION</b>With the guide of TEE, intra-operative hybrid therapy is a safe and effective method for closure of muscular and perimembranous VSD without cardiopulmonary bypass in children.</p>


Subject(s)
Cardiac Catheterization , Methods , Child , Child, Preschool , Echocardiography, Transesophageal , Female , Heart Septal Defects, Ventricular , Diagnostic Imaging , General Surgery , Humans , Infant , Male , Treatment Outcome
7.
Chinese Journal of Hematology ; (12): 183-186, 2008.
Article in Chinese | WPRIM | ID: wpr-262908

ABSTRACT

<p><b>OBJECTIVE</b>To explore the clinical significance of fibrinolysis inhibitors including thrombin activatable fibrinolysis inhibitor(TAFI), plasminogen activator inhibitor (PAI) and alpha2-plasmin inhibitor (alpha2-PI) in acute leukemia (AL).</p><p><b>METHODS</b>PAI-1 antigen and TAFI antigen were investigated by enzyme-linked immunosorbent assay and PAI activity, alpha2-PI activity, TAFI activity by chromatography substrate assay in 117 AL patients and 50 normal controls.</p><p><b>RESULTS</b>1) alpha2-PI activities in AL patients were reduced, especially in ALL patients [(96.8 +/- 21.2)%]; 2) PAI-1 antigens in AML patients [(37.8 +/- 9.2) microg/L] were significantly higher than that in normal controls [(33.8 +/- 4.9) microg/L]; 3) PAI-1 antigens in APL [(37.8 +/- 9.0) microg/L] and AML-M5 patients [(39.9 +/- 11.6) microg/L] were higher and TAFI activities in APL patients [(13.3 +/- 4.8) mg/L] were lower than that in normal controls [(16.9 +/- 2.6) mg/L]; 4) PAI-1 antigens of relapsed/refractory patients (39.6 +/- 11.6) microg/L) were significantly elevated; 5) TAFI activities in bleeding patients [(13.2 +/- 5.3) mg/L] were significantly lower than that in normal control as well as non-bleeding patients (17.0 +/- 4.6) mg/L); 6) The severity of bleeding was negatively correlated with TAFI activity (r = - 0.276, P <0.05).</p><p><b>CONCLUSIONS</b>Hyperfibrinolysis caused partially by decrease of alpha2-PI and TAFI activity takes part in the pathogenesis of bleeding in AL.</p>


Subject(s)
Acute Disease , Adolescent , Adult , Aged , Carboxypeptidase B2 , Blood , Child , Female , Humans , Leukemia , Blood , Male , Middle Aged , Plasminogen Activator Inhibitor 1 , Blood , Young Adult
8.
Chinese Journal of Pediatrics ; (12): 599-603, 2007.
Article in Chinese | WPRIM | ID: wpr-311774

ABSTRACT

<p><b>OBJECTIVE</b>Although several reports documented the association of congenital hypothyroidism (CH) and left ventricular (LV) function in infants or neonates, right ventricular (RV) function in neonates with CH has not been previously studied. The aim of the present study was to assess RV function in neonates with CH before and after thyroxine substitution therapy by quantitative tissue velocity imaging (QTVI) and tissue tracking imaging (TTI).</p><p><b>METHODS</b>Fifty-two neonates aged 18-28 days (25 males and 27 females) with CH and 35 healthy neonates aged 18-28 days (16 males and 19 females) were studied by QTVI, TTI as well as conventional pulsed-wave Doppler echocardiography (PWD). The standard apical four-chamber view for long-axis motion of the right ventricle was used for echocardiographic evaluation. Peak systolic displacement (D), peak systolic velocity (Vs), peak early (Ve) and late (Va) diastolic velocity of tricuspid annule were measured, Ve/Va ratio was calculated as well. Transtricuspid flow velocity during early diastole (E) and late diastole (A) were also measured by pulsed-wave Doppler echocardiography. PWD and E/A ratio were calculated too. For each neonate, serum hormone levels of TSH, TT(3), TT(4), FT(3) and FT(4) were measured with a standard chemiluminescent immunoassay. After 1 month of levothyroxine (L-T(4)) substitution therapy in CH neonates, all the echocardiographic evaluations and biochemical tests were re-evaluated. Correlation analysis was also made between serum thyroid hormones levels and right ventricular function.</p><p><b>RESULTS</b>The indices of right ventricular diastolic function by PWD (E and E/A ratio) in CH group were (45 +/- 10) cm/s and (0.8 +/- 0.3), respectively. Compared with controls, E and E/A ratio in CH neonates were significantly lower (P < 0.001, respectively), while A did not differ between the two groups (P > 0.05). QTVI and TTI showed that right diastolic function (Ve and Ve/Va ratio) as well as right systolic function (Vs and D) in CH group were (3.69 +/- 1.38) cm/s, (0.74 +/- 0.19) cm/s, (4.38 +/- 0.63) cm/s and (0.52 +/- 0.12) cm, respectively. CH neonates had significantly lower Ve, Ve/Va ratio, Vs and D of tricuspid annular velocity (P < 0.001, respectively), whereas there was no significant difference in Va between the two groups (P > 0.05). After 1 month of substitutive therapy, CH neonates showed a significant increase of Ve, Ve/Va ratio, Vs, D, E, and E/A ratio, (6.92 +/- 1.86) cm/s, (1.13 +/- 0.22), (5.92 +/- 1.03) cm/s, (0.78 +/- 0.17) cm, (61 +/- 10) cm/s and (1.1 +/- 0.4), respectively (P < 0.001). Those parameters were positively correlated with serum TT(3), TT(4), FT(3) and FT(4) levels (P < 0.01, respectively), and were negatively correlated with serum TSH levels (P < 0.01, respectively).</p><p><b>CONCLUSIONS</b>Our findings suggest that neonates with CH are associated with right ventricular subclinical systolic and diastolic dysfunction, which can be reversed by early L-T(4) substitution therapy. QTVI and TTI are valuable methods to evaluate right ventricular function in neonates. Systolic and diastolic velocities of the tricuspid annulus measured by QTVI and TTI are useful and accurate to assess RV function in neonates.</p>


Subject(s)
Adult , Blood Flow Velocity , Child, Preschool , Congenital Hypothyroidism , Diastole , Physiology , Echocardiography , Echocardiography, Doppler, Pulsed , Female , Heart Ventricles , Humans , Male , Systole , Physiology , Thyrotropin , Pharmacology , Thyroxine , Blood , Pharmacology , Tricuspid Valve , Ventricular Function, Left , Physiology , Radiation Effects , Ventricular Function, Right , Physiology
9.
Article in Chinese | WPRIM | ID: wpr-332128

ABSTRACT

<p><b>OBJECTIVE</b>To assess the accuracy of echocardiography in diagnosis of total anomalous pulmonary venous connection (TAPVC).</p><p><b>METHODS</b>A combination of suprasternal, parasternal, subcostal and apical views were employed to diagnose TAPVC and to trace the course of the anomalous pulmonary venous connection, the direction of the inter-atrial shunt, enlargement of right atrium (RA) and right ventricle (RV), superior and inferior vena cava. All pediatric patients underwent surgical repair. The results of echocardiography were compared with surgical findings.</p><p><b>RESULT</b>A total of 28 consecutive pediatric patients with suspected TAPVC were included in this study. The TAPVC diagnosis was confirmed in 26 cases after surgery, partial anomalous pulmonary venous connection (PAPVC) in one case, and Cor Triatriatum and possible TAPVC in another. The diagnostic accuracy of TAPVC by echocardiography in the study was 92.86%. There were 17 supracardiac TAPVC, 11 intracardiac TAPVC. In all patients, enlargement of the RA and RV, inter-atrial right-to-left shunt via atrial septal defects were documented in parasternal and subcostal views. Common pulmonary vein or four pulmonary vein direct to RA or via coronary sinus to RA were the draining sites of intracardiac TAPVC. The enlargement of left innominate vein-right superior vena cava draining to RA was seen in supracardiac TAPVC.</p><p><b>CONCLUSION</b>A combination of suprasternal and subcostal multi-views in echocardiography can increase the diagnostic accuracy of TAPVC in pediatric patients.</p>


Subject(s)
Abnormalities, Multiple , Diagnostic Imaging , Child , Child, Preschool , Echocardiography, Doppler, Color , Female , Heart Septal Defects, Atrial , Diagnostic Imaging , Humans , Infant , Infant, Newborn , Male , Pulmonary Veins , Congenital Abnormalities , Diagnostic Imaging
10.
Microbiology ; (12)1992.
Article in Chinese | WPRIM | ID: wpr-683893

ABSTRACT

strain 49 #(BD-4),which had the highest flocculating activity among 752 strains,was picked out.The fermentation condi tions and the flocculating influence factors were studied.By testing,this cult ure broth had a much more ability to get rid of suspended materials in water and to decolourize the high-density dyestuff wastewater. In laboratory scale,bioflocculant was roughly extracted from culture broth by t he technological process,water extraction-organic solvent sediment-vacuum dry .The suitable work conditions of each step were set up through the tests.0 198 5g dry product was obtained from 100mL culture broth.

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