ABSTRACT
Objective To explore the impact of using large dose norepinephrine on the anastomotic healing after esophagectomy.Methods Clinical data of data of 148 cases patients with esophageal cancer who were treated in Wuwei Tumor Hospital of Gansu Province with surgery from January 2014 to June 2016 were retrospectively analized.There were 7 patients who were used 25-67 mg ((32.6 ± 2.3) mg) norepinephrine because of the low blood pressure and other factors during the first 4 d postoperative as research group,and the other 141 patients who had not applied or applied the small dose were set as control group.The patients of two groups with postoperative anastomotic healing and fistula incidence were compared.Results There were 3 cases and 7 cases of postoperative patients appeared anastomotic fistula in the research group and the control group,the rate of anastomotic fistula were 42.86％ (3/7) and 4.96％ (7/141) respectively,the difference was significant (x2=9.78,P =0.001),and 2 cases appeared varying degrees residual gastric necrosis in the research group,all of them occurred in the patients with large dosage and long time.Conclusion There are great risk on the anastomotic fistula and residual stomach mecrosis if long time and large dose norepinephrine was used after esophagectomy,it should be caused enough attention for surgeons.
ABSTRACT
To elucidate the molecular characteristics of the hemagglutinin (HA) genes of H5N1 subtype of avian influenza viruses in the boundary region of Yunnan province. Of 420 samples were collected from the foreign poultry in boundary region of Yunnan province during 2003 to 2008 and these samples were subjected to screening by H5/N1 subtype-specific and multiplex RT-PCR. testing. The HA genes of H5N1 viruses from positive samples were amplified by RT-PCR and cloned into vector pMD18 T for subsequent sequencing. The alignment with sequences of the known reference strains and phylogenetic analysis were then performed. The genes from 21 representative positive samples with 4 different sequences at the cleavage site were obtained and all of them possessed the molecular characteristic of highly pathogenic avian influenza virus. The mutation of key amino acids had been found among receptor-binding sites, potential glycosylation sites and neutralizing epitopes.-Phylogenetic analysis showed those positive samples could be divided into 5 distinct clades, including clade 1, 2.4. 2.3.2, 2.3.4 and 7. It is evident that H5N1 viruses from the foreign boundary region of Yunnan province in 2003 to 2008 show genetic divergence and clade 2,3,4 is the dominant clade in this region.