Objective To investigate the clinical efficacy of off-pump coronary artery bypass grafting (OPCABG) comparing with the conventional coronary artery bypass grafting (CCABG) for treating the patients with coronary heart disease (CHD) and its impact on brain natriuretic peptide (BNP).Methods One hundred and twenty-two patients undergoing elective coronary artery bypass grafting were divided into CCABG group and OPCABG group according to the surgical method.The operative condition and postoperative clinical data,postoperative complications and death of the two groups were observed.The level of BNP was detected before surgery,immediately after surgery,postoperative 6,24,72 h and 1 week.Results The operative time,postoperative mechanical ventilation time,ICU monitoring time,24 h after drainage and blood transfusion,hospital stay in OPCABG group was(210.08 ± 60.02) min,(9.01 ± 2.57) h,(32.08 ±9.17) h,(343.43 ± 98.12) ml,(341.75 ±97.64) ml,(9.70 ±2.77) d,significantly lower than those in CCABG group [(309.38 ± 88.39) min,( 15.25 ±4.36) h,(45.14 ± 12.90) h,(530.24 ± 151.50) ml,(752.90 ± 215.11 ) ml,( 15.44 ± 4.41 ) d] ( P ＜ 0.05 ).The incidence of postoperative complication of OPCABG group and CCABG group was 15.9％(10/63) and 47.5％(28/59),there was significant difference ( χ2 =14.172,P ＜ 0.01).The mortality rate of OPCABG group and CCABG group was 1.6％(1/63) and 8.5％(5/59),there was no significant difference ( x2 =3.091,P ＞ 0.05 ).The level of BNP in CCABG group before surgery,immediately after surgery,postoperative 6 h was (104.54 ±29.87),(114.74 ±32.36),( 129.10 ± 36.15 ) ng/L,and in OPCABG group was ( 103.46 ± 29.56 ),( 109.49 ± 31.28 ),( 126.42 ± 36.12 )ng/L respectively,there was no significant difference (P ＞ 0.05).The level of BNP in CCABG group postoperative 24,72 h and 1 week [(335.57 ± 95.83 ),(429.98 ± 122.85 ),(350.92 ± 100.26) ng/L] were significantly higher than those in OPCABG group [(241.22 ± 68.92 ),( 317.49 ± 90.71 ),(256.86 ± 73.39)ng/L] (P ＜ 0.05).The levels of BNP in both groups postoperative 24,72 h and 1 week were significantly higher than those before surgery (P＜ 0.05).Conclusion The OPCABG surgery is safe and effective,and has certain advantages for maintenance of cardiac function.

OBJECTIVETo establish a gas chromatography method for simultaneous determination of organochlorine and pyrethroid pesticide residues in Viscum coloratum by cloud-point extraction (CPE).

METHODPesticides were extracted with the non-ionic surfactant Triton X-100. The apparatus was gas chromatography with electron capture detector and the separation was performed on an Hp-5 column. The pesticide residues were calculated by external standard method.

RESULTGood linear relation was obtained over the range of 5-500 microg L(-1) for organochlorine and 10-1,000 microg L(-1) for pyrethroid. The limits of detection was 1.5-7.5 microg kg(-1). The average recoveries of organochlorine and pyrethroid were 74.15% -111.6% with corresponding RSD of 4.0% -9.1%.

CONCLUSIONThe sample and rapid method was applied to pesticide residues determination.

Chromatography, Gas ; methods ; Limit of Detection ; Octoxynol ; chemistry ; Pesticide Residues ; analysis ; Plant Extracts ; analysis ; Viscum ; chemistry

Mice ; Animals ; Spiral Ganglion/physiology* ; Cochlea/physiology* ; Neurons