Abstract In November 2023, the Jinhua Center for Disease Control and Prevention received a report from a company indicating 3 cases of pulmonary tuberculosis. An on-site epidemiological investigation was immediately conducted. A total of 3 cases were reported, with an attack rate of 9.68%. The first case had cough and expectoration for more than a year, and diagnosed with rifampicin-resistant pulmonary tuberculosis on November 16, 2023, and the other 2 cases were his colleagues who were diagnosed with rifampicin-resistant pulmonary tuberculosis and etiology negative pulmonary tuberculosis on November 20 and 21, respectively. Based on the on-site investigation and laboratory test results, it was a cluster of rifampicin-resistant pulmonary tuberculosis. The likely cause of the spread might be the lack of timely medical attention for the first case, which led to the infection of other colleagues through contact transmission. Eight close contacts screened positive for purified protein derivative (PDD) or recombinantMycobacterium tuberculosisfusion protein skin test (EC-ST), given the injection of mycobaeterium vaccae vaccine, and no new cases of tuberculosis detected in the 3-month follow-up. The outbreak highlighted the necessity for the company to enhance health education concerning the prevention and treatment of pulmonary tuberculosis, implement regular health monitoring and enhance the physical examination for employee in order to increase sensitivity to pulmonary tuberculosis.

Objective Experience with high-frequency oscillatory ventilation (HFOV) after congenital cardiac surgery is limited.The aim of the present study was to investigate the effect and safety of high frequency oscillation ventilation for patients with serious pulmonary hemorrhaege after surgical repair of congenital heart disease (CHD).Methods The patients with serious pulmonary hemorrhaege after surgical repair of CHD using conventional mechanical ventilation or high frequency oscillation ventilation were retrospectively analyzed.From January 2010 to July 2012,there were fourteen patients suffered from serious pulmonary hemorrhaege after surgical repair of congenital heart disease in our hospital and all involved in this study.The mean age was (6.5 ± 5.9) months(ranged from 1 to 24 months) and the mean body weight was (5.8 ± 1.7) kg(ranged from 3.7 to 10 kg).Before May 2011 patients with serious pulmonary hemorrhaege after surgical repair of congenital heart disease were treated with conventional mechanical ventilation(CMV group,n =6),and after May 2011 high frequency oscillation ventilation (HFOV group,n =8) instead.The diagnoses were pulmonary atresia with ventricular septal defect and major aortopulmonary collateral arteries 7 cases,tetralogy of Fallot with imbalance pulmonary arterial development 5 cases,and total anomalous pulmonary venous connection 2 cases.Heart rate,arterial blood pressure,central venous pressure(CVP),inostmpic score,the blood gas analysis,the oxygenation index(OI),the outcomes and complications during both mechanical ventilations were all recorded.Results The PaO2,OI and systolic blood pressure of patients in HFOV group were significant higher than those in CMV group after 2 hours ventilation.There was no statistical difference in PCO2,diastolic blood pressure and inostropic score after 1,2,4,8,24 hours ventilation.All cases had no significant changes in hemodynamics.CVP of patients in HFOV group increased slightly(P ＜0.05),but there was no statistical difference in arterial blood pressure.Four patients died in CMV group.The mortality of CMV group and HFOV group was 66.7％ (4/6) and 37.5％ (3/8,one with pulmonary venous obstrution,one with tracheobronchial blocked,the other with re-hemorrhaege) respectively.The mortality of HFOV group was no significantly different from that of CMV group.Conclusion Compared to CMV,using HFOV achieved greater oxygenation function in patients with serious pulmonary hemorrhaege after surgical repair of CHD rapidly,had no significant changes in hemodynamics and rare serious complications.HFOV was effective and safe for patients with serious pulmonary hemorrhaege after surgical repair of congenital heart disease.

Objective In patients with pulmonary atresia and intact ventricular septum ( PAIVS) without right ventricular-dependent coronaries, catheter techniques including the use of a sniff wire, lasers, and radiofrequency have been the most widely used initial therapy. However, percutaneous perforation and balloon valvuloplasty were associated with higher rate of procedural failure and serious complications. Methods We report our experience with a hybrid approach for pulmonary atresia with intact ventricular septum, combining surgery and interventional catheterization techniques. Between March 2005 and March 2010, hybrid procedure was carried out successfully in 30 newboms and infants with favorable anatomy. The age ranged from 1 day to 48 months with a mean of (4.59 ±3.21) months. The heart was exposed through median sternotomy. A pursestring suture was placed in the right ventricular outflow tract 2 cm away from the pulmonary trunk. Then a 16-gauge intravenous catheter was punctured through the right ventrical and perforated the atretic PV with the guidance of echocardiography. A guide wire was then inserted into the sheath and used to guide the balloon across the PV. Sequential dilations were performed until a full opening of the PV with the guidance of epicardial echocardiography. In patients ＜ 3 months PDA ligation was performed followed by modified Blalock-Taussig (B-T) shunt. In patients ＞ 3 months PDA ligation was not performed. A modified B-T shunt was inserted if severe systemic oxygen desaturation occurred after PDA ligation. Bidirectional Glenn shunt was performed for severe hypoplasia. Hybrid procedure was achieved in all patients. The simultaneous procedures included 25 cases of PDA ligation. 6 newborns underwent modified B-T shunt placement (3.5 to 5 mm) after pulmonary valvuloplasty and PDA ligation, and 2 patients ＞ 1 month underwent modified B-T shunt. Another 2 patients were selected for univentricular palliative surgery because of a diminutive monopartite right ventricle and bidirectional Glenn procedure was performed. No pericardial effusion or cardiac tamponade was observed in all patients. Another case without PDA ligation underwent a modified B-T shunt because of hypoxemia three days after hybrid procedure, and the rest patients were discharged without any further surgical intervention.During the follow-up period of 1.5 to 62.0 months, 5 patients died. 25 (83.3%) survived and were all in New York Heart Association functional class 1. Peripheral oxygen saturation increased from 0.73 ± 0.08 to 0.94 ± 0.04 (P ＜ 0.05). One patient remains in a single-ventricle pathway, whereas 24 patients achieved a two-ventricle circulation. Results Conclusion Perventricular balloon pulmonary valvuloplasty using a hybrid approach is a safe and feasible procedure for patients with PAIVS.

Objective To evaluated the early and mid-term results of arterial switch operation (ASO) for patients with intramural coronary artery.Methods From September 2008 to March 2012,75 patients underwent ASO at Guangzhou Women and Children Medical Center for repair of transposition of the great arteries and Taussig-Bing anomaly.Among these patients,7patients (9.3％) had an intramural coronary artery.Mean age at operation was 2.4 months (2 days to 1 year) and mean body weight was(4.3 ±2.2) kg.The TGA and VSD in 3 cases,TGA/IVS in 2,and Taussig-Bing anomaly in 2.Among them 3 patients had an aortic arch anomaly,interruption of the aortic arch in 1 and coarctation of the aorta in 1.The individual coronary button technique was used in coronary transfer in 7 patients,of whom one patient required to unroof the intramural segment,an-other one required to unroof the intramural segment and enlarge with autologous pericardium the because of myocardial ischemia.There was 1 operative death because of low cardiac output syndrome.This patient underwent a coronary transfer combining aortic arch repair but without unroofing the stenotic intramural segment.The mortality was 14.2％.In the same period the mortality for 68 patients without an intramural coronary artery was 4.4％ (3/68).There was no statistical difference in mortalitv between the patients with and without an intramural coronary artery (P ＞ 0.05).Results 6 patients follow-up 4 to 47months.There was no late death.No intramural coronary artery obstruction was identified by cardiac computerize temography.All patients had normal ventricular function and were in NYHA class Ⅰ during follow-up.The intramural coronary artery is well known as a risk factor of ASO.Conclusion The technique of coronary transfer should be individually adapted to each anatomical situation.Individual technique for coronary transfer has excellent results.

Objective To review the outcomes of atrioventricular valve replacement in patients with functional single ventricle and evaluate risk factors for mortality.Methods Retrospectively reviewed our experience with atrioventricular valve (AVV replacement) in patients with functional single ventricle from January 2008 to December 2014.Outcome included mortality and valve-related complications.Results Thirteen patients required AVV replacement.Prosthetic valve type was St.Jude bileaflet mechanical mitral valve.Valve size ranged from 27 to 31 mm,including 27 mm in 2,29 mm in 7,and 31 mm in 4 patients.Median age at valve replacement was 4.5 years(range:1.2 years to 18.0 years).Concomitant procedures included bidirectional Glenn shunt in 3,pulmonary artery banding in 1,and repair of pulmonary vein stenosis in 1 patient.There were four early deaths with a perioperative mortality of 30.8％.Complications after AAV replacement included complete atrioventricuiar block in 1,intracerebral hemorrhage in 1 patient due to valve-related anticoagulation.No patient had perivalvular leakage.There was one late death during a mean follow-up of 3 years (range:0.5-5.0 years).Five-year Kaplan-Meier survival was 61.5％.Fisher exact probability test showed that lower weight(＜ 10 kg) at operation and prosthetic size/weight ratio ＞ 2.0 were risk factors for overall mortality.Of the survival patients,functional status is NYHA class Ⅰ in 3,class Ⅱ in 5.No patient developed valve-related complications.Conclusion Atrioventricular valve replacement can be performed in patients with functional single ventricle with acceptable mortality.Lower weight and increased prosthetic size/weight ratio at operation were significantly associated with worse survival.

Objective To evaluate the results of surgical treatment for patients with heterotaxy syndrome and cardiac anomaly.Methods From September 2008 to October 2013,34 patients with heterotaxy syndrome underwent 46 cardiac operations at Guangzhou Women and Children Medical Center.22 were male,and 12 female.Mean age at operation was 22 months (4 months to 14 year).There were right atrial isomerism 24 cases,left atrial isomerism 10 cases.Only one had a single VSD,and others were all with complex cardiac anomaly,including complete atrioventricular canal defect 26 cases,tricuspid atresia 4 cases,mitral atresia 1 case,anomalous pulmonary venous connection 18 cases,pulmonary venous stenosis 4 cases,double superior vena cava 17 cases,and interrupted hepatic portion of the inferior vena cava 5 cases.Fontan procedure was performed in 5 patients,bidirectional Glenn in 13,Kawashima in 3,central shunt in 1,atrioventricular valve replacement in 5,and pulmonary artery banding in 5.Results There were 4 died during hospitalization.The follow-up duration was 1 month to 5 years.There were 2 died.The early to middle term mortality was 17.6％ (6/34).In the same period the mortality for 103 patients without heterotaxy syndrome underwent univentricular repair was 4.8％ (5/103).There was significant statistical difference (P ＜ 0.05).Conclusion Right heart bypass operation remains the preferred palliative procedure for patients with heterotaxy syndrome,and the eraly and middle term results were satisfied.

Objective To analyze the features of cervical vertebra X-ray examination and transcranial Doppler (TCD) in children with cervical vertigo, and investigate the mechanism of the disease. Methods X-ray examination of cervical vertebra and TCD were performed on 80 children with cervical vertigo, and the features of the results were analyzed. Results The abnormal results of cervical X-ray examination mainly showed atlantoaxial joint or/and C2, C3 vertebral joint disorders, some of which combined with cervical instability, cervical curvaturestraightened and even reverse curvature, cervical scoliosis. The abnormal results of TCD showed the blood flow velocity in single or multiple branch of artery increased mainly, some of which decreased or became asymmetrial. Conclusion The cervical vertigo in children may result from various kinds of disorders of the atlas, axis or/and C2, C3 vertebrae.

OBJECTIVETo study the chromatographic fingerprint of the fruits of Schisandra chinensis, and identify the peaks.

METHODAnalysis was performed at 30 degrees C on a Waters Symmetry C18 column (4.6 mm x 250 mm, 5 microm), eluted with acetonitrile-water gradient elution. The flow-rate was 1.0 mL x min(-1), and detection wavelength was 218 nm. The peaks in the chromatogram were identified by LC-MS.

RESULTThe fingerprint of the fruits of S. chinensis was established, and fifteen peaks of lignans were identified.

CONCLUSIONThe method was easy, reliable and could be used as a powerful tool for the further quality control of S. chinensis.

Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; isolation & purification ; Fruit ; chemistry ; Lignans ; analysis ; isolation & purification ; Schisandra ; chemistry

OBJECTIVETo discuss the experience of surgical treatment of total anomalous pulmonary venous connection (TAPVC) in infants.

METHODSThe clinic data of 84 cases with TAPVC under 6 months of age underwent surgical treatment at Department of Cardiac Surgery, Guangzhou Women and Children's Medical Center from January 2012 to October 2015 were analyzed retrospectively. There were 58 male and 26 female patients. The patients were aged 1 days to 6 months with a mean of (2.4±2.2) months at surgery, including 22 newborns. Body weight was 1.8 to 6.8 kg with a mean of (4.3±1.2) kg. There were 24 cases of intracardiac type, 46 cases of supracardiac type, 10 cases of infracardiac type and 4 cases of mixed type. There were 26 cases received emergent operation. There were 14 cases used Sutureless technique in operations and 46 cases used conventional methods in the no-intracardiac type cases, and 2 cases enlarged the anastomsis with autologous pericardium. According to the condition, corrective surgeries of other anomalies were performed in the meantime, including 3 Warden operations (right side), 3 bilateral bidirectional Gleen operation, 2 correction of unroofed coronary sinus syndrome, 1 coarctation of aorta correction with deep hypothermic circulation arrest, and 1 repair of ventricular septal defect.

RESULTSThe ratio of newborn was higher in Sutureless technique group than in conventional methods group (7/14 vs. 32.6%, χ(2)=4.927, P=0.043), and mean age was less ((1.8±0.4) months vs. (2.4±2.2) months, F=4.257, P=0.042), but there were no difference in body weight, cardiopulmonary bypass time and aorta clamped time between the two groups. Followed up for 1 to 46 months, 10 cases (11.9%) died overall and the mortality of intracardiac (3/10) and mixed (2/4) type were much higher than in intracardiac (4.2%) and supracardiac (13.0%) type. The mortality were no difference between newborn and infants, or whether emergent operation, or Sutureless technique and conventional methods. The maximal pulmonary venous flow velocity was abnormal speed-up >1.8 m/s at 1 week and 1 to 3 months post-operation mostly.

CONCLUSIONSThe mortality of TAPVC was differed by different types. Intrinsic pulmonary vein stenosis maybe the main cause of mortality. The high quality of anastomsis could reduce the operative mortality.

Aortic Coarctation ; Body Weight ; Cardiac Surgical Procedures ; methods ; Circulatory Arrest, Deep Hypothermia Induced ; Female ; Heart Defects, Congenital ; mortality ; surgery ; Heart Septal Defects, Ventricular ; Humans ; Infant ; Infant, Newborn ; Male ; Postoperative Period ; Pulmonary Veins ; pathology ; surgery ; Retrospective Studies

Objective: To review the early and mid-term results of end-to-side anastomosis technique for interrupted aortic arch in neonates and infants. Methods: Clinic data of 46 patients were diagnosed as interrupted aortic arch in Department of Cardiac Surgery, Guangzhou Women and Children′s Medical Center between January 2010 and December 2016 were analyzed retrospectively. Twenty-six cases were neonates. The median age underwent surgery was 23 days (range: 2 days to 8 years). Anatomical subtypes included 36 cases of type A and 10 cases of type B. There was no type C case. The reconstruction of the aortic arch was completed by an extended end-to-side anastomosis technique between the descending aorta and the undersurface of the proximal aortic arch. In 42 patients, all with intracardiac anomalies, had concomitant complete repair of intracardiac anomalies through a median sternotomy. The remaining 4 patients, all without intracardiac anomalies, an end-to-side anastomosis was constructed through a left thoracotomy. During follow-up, aortic arch recurrent obstruction, left ventricular outflow tract obstruction (LVOTO) and tracheal stenosis were focused. Results: There were 3 surgical deaths, with amortality rate of 6.5%. The remaining 43 patients survived after surgery. In 39 of these patients, deep hypothermic cardiac arrest (DHCA) strategy was used for brain protection, and the mean time of DHCA was (16±3) minutes. Eight patients underwent delayed sternal closure. The mean mechanical ventilation time and ICU stay time were (3.4±1.6) days (range: 2 to 12 days) and (6.4±2.7) days (range: 3 to 16 days) respectively. In 16 patients, all with tracheal or bronchial stenosis before surgery, mechanical ventilation was successfully evacuated, and no new airway stenosis occurred. There was no residual pressure difference between upper and lower extremity arterial blood pressure at discharge. Echocardiography showed normal arterial blood flow velocity in aortic arch. At a mean follow-up of (36.2±18.9) months (range: 6 months to 7 years), there were two patients lost and one late date. Four patients developed a recurrent stenosis at the aortic arch, of which two were severe, and the other two were mild. In 2 patients, both with mild LVOTO before surgery, no significant increase in the degree of obstruction was found during the follow-up. Two patients developed new mild to moderate LVOTO without clinical symptoms, and continued to follow up. In all patients, the tracheal or bronchial stenosis were extenuated, and there was no new progressive airway stenosis by regular bronchoscopy. Conclusions The end-to-side anastomosis technique for the reconstruction of the aortic arch achieved excellent early and mid-term results in neonates and infants suffered from interrupted aortic arch. Reducing the anastomotic tension by extensive mobilization is the key to prevent postoperative early complications and late recurrent arch obstruction.