Objective To explore the regulating mechanism of hepatic injury in obstructive jaundice (OJ). Methods①Rat hepatocytes were isolated by in situ collagenase perfusion and primary culture. Hepatocytes were pretreated with various concentrations of protein kinase C (PKC) agonist parsmeae (PMA) and inhibitor chelerythrine for 20 min. After pretreatment, 50 μmol/L glycochenodeoxycholate (GCDC) was added. Cells were next detected by FCM and TUNEL.②Experimental obstructive jaundice was induced by double ligation of the bile duct (BDL), BDL for 3, 7, 14, 21days.We detected apoptotic status in liver with TUNEL and PKC protein in liver with immunohistochemistry method. Results①PMA increased GCDCinduced apoptosis and chelerythrine decreased GCDCinduced apoptosis in a concentrationdependent manner. ②The apoptotic rate of liver was related to time of OJ. Apoptosis index (AI) was the highest in 14day bile duct ligation. The ber PKC expression, the more number of apoptotic cells in OJ.Conclusion PKC takes part in the regulation and the occurrence and progression of hepatic injury in OJ.
Objective To analyze the clinical outcome of one-stage repair of aortic coarctation combined with cardiac anomalies and pneumonia. Methods We retrospectively reviewed the clinical data of 26 patients with severe pneumonia undergoing repair of aortic coartation between January 2014 and August 2015, among whom 7 patients (26.9%) received tracheal intubation, 5 patients double incision, and 21 patients single incision. Long-term follow-up results were obtained from outpatient department. Results Two patients died from operations. The mean hospital stay was 18.5±4.5 d, bypass time 93.5±36.4 min, and mechanical ventilation time 89.5±41.3 min. Postoperative complication mainly was pneumonia. During 6-month follow-up at outpatient department, incidence of pneumonia decreased, and children’s growth and development remarkably improved. Conclusion In the case of uncontrollable pneumonia, one-stage repair of aortic coarctation associated with cardiac anomalies still can receive a good outcome.
Objective To analyze the curative effect of nitric oxide (NO) and bosentan on treatment of the interruption of aortic arch (IAA) with ventricular septal defect (VSD) and serious pulmonary hypertension (SPH). Methods Thirty-two children with IAA and VSD combined SPH from January 2015 to May 2017 confirmed by cardiac CT and ultrasound in Children’s Hospital of Hebei Province were enrolled including 17 males and 15 females, aged 1.10-4.30 months (mean, 2.71±0.98 months) and weighing 3.33-6.10 kg (mean, 4.57±0.88 kg). The 32 children were randomly divided into two groups (n=16 in each), a NO group and a bosentan group. All the patients underwent interruption of aortic arch and ventricular septal defect repair. When patients returned to cardiosurgery intensive care unit (CSICU) half an hour later, patients in the NO group inhaled NO 20 ppm for 36 h and those in the bosentan group were given bosentan by nasogastric feeding 15 mg, twice a day. The cardic index, pulmonary/systemic pressure ratio, oxygenation index at 3 h, 6 h, 12 h, 24 h, 36 h after surgery were evaluated, and the differences between the two groups were compared. Results The pulmonary/systemic pressure ratio in the two groups increased at first and then decreased, while oxygenation index in the two groups decreased at first and then increased, and the differences in the same groups at the adjacent time points were statistically significant (P<0.05). The cardiac index in the two groups decreased at first and then increased, the differences in the same groups at the adjacent time points were statistically significant, except for 6 h and 12 h after surgery in the bosentan group (P>0.05). At postoperative 6 h, 12 h, the oxygenation index in the NO group was significantly higher than that in the bosentan group, and the pulmonary/systemic pressure ratio in the NO group was less than that in the bosentan group (P<0.01). The cardiac index in the NO group was higher than that of the bosentan group after 6 h, 12 h, 24 h of operation, which were statistically significant (P<0.05), and the cardic index of children in the NO group was greatly higher than that in the bosentan group after 12 h of surgery (P<0.01); at the same time point, the corresponding indexes were not statistically significant between the two groups (P>0.05). Conclusion NO inhalation in the treatment of IAA with VSD and SPH in children with early postoperative SPH is better than the bosentan, but in the late postoperative period, the effect is similar.
Objective To explore the hemodynamic assessment after radical surgery in children with tetralogy of Fallot (TOF) by both echocardiography and Mostcare monitor. Methods Clinical data of 63 children with TOF who underwent radical surgery in our hospital from February 2016 to June 2018 were retrospectively analyzed, including 34 males and 29 females, aged 6-24 (9.82±5.77) months. There were 19 patients undergoing transannular patch reconstruction of the right ventricular outflow tract (a transannular patch group) while 44 patients retained the pulmonary valve annulus (a non-transannular patch group) . The echocardiography and Mostcare monitor parameters were recorded and brain natriuretic peptide was tested at the time points of 0, 8, 12, 24 and 48 hours after operation (T 0, T 1, T 2, T 4) to analyze their correlations and the change trend at different time points after radical surgery. Results The left ventricular ejection fraction at T 1 (43.49%±3.82%) was lower than that at T 0 (48.29%±4.55%), T 2 (45.83%±3.69%), T 3 (53.76%±4.43%) and T 4 (60.54%±3.23%, P<0.05). The cardiac index at T 1 (1.85±0.35 L·min−1·m−2) was lower than that at T 0 (2.11±0.38 L·min−1·m−2), T 2 (2.07±0.36 L·min−1·m−2), T 3 (2.42±0.37 L·min−1·m−2) and T 4 (2.82±0.42 L·min−1·m−2, P<0.05). The cardiac circulation efficiency at T1 (0.19±0.05) was lower than that at T 0 (0.22±0.06), T 2 (0.22±0.05), T 3 (0.28±0.06) and T 4 (0.34±0.06, P<0.05). The right ventricular two-chambers view fraction area change at T 1 (23.17%±3.11%) was lower than that at T 0 (25.81%±3.74%), T 2 (25.38%±3.43%), T 3 (30.60%±4.50%) and T 4 (36.94%±5.85%, P<0.05). The pulse pressure variability was the highest at T 0 (18.76%±3.58%), followed by T 1 (14.81%±3.32%), T 2 (12.44%±2.94%), T 3 (10.39%±2.96%) and T 4 (9.18%±1.92%, P<0.05). The blood brain natriuretic peptide was higher at T 1 (846.67±362.95 pg/ml) than that at T 0 (42.60±18.06 pg/ml), T 2 (730.95±351.09 pg/ml), T 3 (510.98±290.39 pg/ml) and T 4 (364.41±243.56 pg/ml, P<0.05). There was no significant difference in left ventricular ejection fraction, cardiac circulation efficiency and heart index between the two groups (P>0.05). The right ventricular two-chambers view fraction area change of the transannular patch group was significantly lower than that of the non-transannular patch group at each time point (P<0.05). The blood brain natriuretic peptide and pulse pressure variability of the transannular patch group were significantly higher than those of the non-transannular patch group (P<0.05). Left ventricular ejection fraction was positively correlated with cardiac index (r=0.637, P=0.001) and cardiac circulation efficiency (r=0.462, P=0.001) while was significantly negatively correlated with blood brain natriuretic peptide (r=–0.419, P=0.001). Conclusion Both methods can accurately reflect the state of cardiac function. Mostcare monitor has a good consistency with echocardiography. Using transannular patch to recontribute right ventricular outflow tract in operation has more influence on right ventricular systolic function. The Mostcare monitor can guide the hemodynamic management after surgery in real time, continuously and accurately.
Objective To investigate the effect of low-flow inhaling NO for short time on postoperative cardiac and pulmonary functions in infants with congenital ventricular septal defect complicated with severe pulmonary hypertension. Methods Forty-five patients with congenital ventricular septal defect complicated with severe pulmonary hypertension from May 2014 to May 2016 in our hospital were enrolled. There were 19 males and 26 females, whose age ranged from 1 to 22 months (average age: 7.2±14.4 months) and weight ranged from 2.7 to 10.5 kg (average weight: 6.8±3.6 kg). The patients were randomly divided into three groups (n=15 in each): the blank group, the prior inhalation group and the posterior inhalation group. The blank group did not inhale NO, and the prior inhalation group inhalated NO for 10 min after tracheal and intubation. After the opening of the aorta, the posterior inhalation group inhaled NO for 10 min. The concentration of NO was 20 × 10–6. The pressure ratio of pulmonary circulation/systematic circulation, heart index and oxygenation index were calculated and the troponin value of the three groups was monitored 10 min after returning to intensive care unit (ICU) and postoperatively 1 h, 3 h and 24 h. Differences among above indicators between three groups were compared. Results The troponin value of the posterior inhalation group within 3 h increased most, followed by the blank group and the prior inhalation group. Postoperatively 1 h and 3 h, the troponin value of the prior inhalation group was significantly less than that of the blank group and posterior inhalation group (P<0.01) and the value on postoperative 24 h in each group was lower than that on postoperative 3 h. The cardiac index of prior inhalation group was higher than that of the blank group and the posterior inhalation group at each time point. Postoperatively 3 h and 24 has well as 10 min after returning to ICU, the cardiac index in prior inhalation group was significantly higher than that of the posterior inhalation group (P<0.05). The pressure ratio of pulmonary circulation/systematic circulation of posterior inhalation group increased more than that of blank group; the differences in two groups were significant between postoperative 3 h and 10 min after returning to ICU (P<0.01). There was no statistical significance in the pressure ratio on postoperative 24 h and 10 min after returning to ICU (P>0.05) in three groups. The index of oxygenation of the prior inhalation group was higher than that of the blank group and the posterior inhalation group and statistically different from that of posterior inhalation group (P<0.05). Conclusion Inhaling NO 10 min preoperatively can reduce the injury to the heart and lung function effectively, but the result is the opposite when inhalating NO 10 min after aorta opening.