Objective To investigate the clinical effect of magnesium sulfate combined with nifedipine in the treatment of patients with pregnancy induced hypertension( HDCP) .Methods Retrospective study was used in this study and 116 patients with HDCP from January 2013 to July 2015 in department of obstetrics and gynecology from our hospital were divided into two groups, including routine group of 62 patients who received routine treatment +magnesium sulfate) and combination group of 54 patients who received routine treatment +magnesium sulphate +nifedipine.The clinical effect was analyzed after five days’ continuous treatment.Results The systolic blood pressure, diastolic blood pressure,24h urinary protein, random urine protein /creatinine,serum homocysteine (Hcy) and CRP values in combination group were lower than routine group (P<0.05).There were no statistical difference in maternal uterine inertia, neonatal asphyxia, fetal distress, postpartum hemorrhage rate between the two groups after the treatment.But the rate of cesarean section in the combination group(50.00%)was significantly lower than that in the routine group(68.25%)(P <0.05).Conclusion Magnesium sulfate combined with nifedipine in the treatment of patients with HDCP had better antihypertensive effect, and would not increase fetal adverse birth outcomes incidence and significantly reduce the rate of cesarean section.

Objective To investigate the effect of different programs of preconditioning with hyperbaric oxygen (HBO) on spinal cord ischemia-reperfusion injury (I/R) in rabbits. Methods Forty-five New Zealand rabbits aged 4-5 months weighing 2.0-2.5 kg were randomly divided into 5 groups: group S, sham operation ( n = 5);group IR, spinal cord I/R injury (n = 10);group H_(1～3) , the animals were pretreated with 100% O_2 at 2.5 ATA 1 h/d for 5 (group H_1 ), 10 (group H_2 ) , or 20 (group H_3 ) consecutive days respectively 24 h before spinal cord I/R. The animals were anesthetized with iv pentobarbital sodium 30 mg/kg. The artery in the ear and left femoral artery were cannulated for proximal and distal mean blood pressure monitoring. Spinal cord ischemia was produced by cross-clamping of abdominal aorta distal to renal artery for 20 min. Hind-limb motor function was assessed at 48 h after reperfusion according to the modified criteria established by Tarlov (0 = no spontaneous movement, 4= normal motor function) . The animals were then killed and the L_5 segment of the spinal cord was removed for detection of neuronal survival (by HE staining), apoptosis (by TUNEL) and degeneration (by Fluoro-Jade B staining). Results Preconditioning with 5 or 10 d of HBO improved the hind-limb motor function and preserved more normal neurons in the spinal cord after I/R injury. Both apoptotic and degenerative cell death were attenuated in H_1 and H_2 groups. There was no significant difference in hind-limb motor dysfunction and the number of normal neurons in the lumbar spinal cord between H_3 group and I/R group. Conclusion Preconditioning with 5 d or 10 d HBO induces tolerance against spinal cord I/R injury, whereas preconditioning with 20 d of HBO fails to protect the spinal cord from I/R injury.