Evaluation effect of position change and pneumoperitoneum pressure on respiratory function in patients with DaVinci assisted radical prostatectomy / 中国实用护理杂志

Objective:To evaluate the effect of position change and pneumoperitoneum pressure on the respiratory system of patients undergoing DaVinci assisted laparoscopic prostate cancer surgery.Methods:Peak airway pressure, lung compliance and airway resistance were recorded by ventilator as the basic values to evaluate the change of respiratory function. When the artificial pneumoperitoneum pressure was 10 mmHg or 15 mmHg, the changes of respiratory function were recorded in five different positions: trendelenburg position (head low foot height) 30°, 15°, supine position, anti-trendelenburg position (head high foot height) 15° and 30°, peak airway pressure, lung compliance, airway resistance and so on.Results:At 10 mmHg and 30° trendelenburg, peak airway pressure, lung compliance and airway resistance were 28.13 cmH 2O, 23.33 ml/cmH 2O,16.06 cmH 2O·L -1·Sec -1, respectively. When the pneumoperitoneum pressure was adjusted to 15 mmHg, peak airway pressure increased to 32.03 cmH 2O, lung compliance decreased to 20.14 ml / cmH 2O, and airway resistance increased to 117.24 cmH 2O·L -1·Sec -1( P<0.01). At 10 mmHg and trendelenburg returned to 15°, peak airway pressure, lung compliance and airway resistance were 26.66 cmH 2O, 24.95 ml/cmH 2O,15.50 cmH 2O·L -1·Sec -1, peak airway pressure increased to 30.61 cmH 2O, the lung compliance decreased to 20.89 ml/cmH 2O and airway resistance increased to 16.66 cmH 2O·L -1·Sec -1 ( t value was -43.81, 24.638, -12.812, P<0.01). Conclusion:With the increase of trendelenburg position angle and artificial pneumoperitoneum pressure, the peak airway pressure and airway resistance are increased, while the lung compliance decreases gradually. Compared with trendelenburg position, the change of artificial pneumoperitoneum pressure has more influence on respiratory function.

NUTRITIONAL EVALUATION OF POWDERED GOAT'S MILK PROTEIN / 营养学报

This study is conducted to evaluate the protein quality of the spray-dried goat's milk powder made from milk of Qingdao's Laoshan dairy goats. Chemical analysis and rat experiment are included in the study with spray-dried powdered cow's milk and isolated soy protein as comparative substances and chemical pure casein as reference protein.The content of crude protein in the powdered goat's milk is 26.01% and the protein's limitting amino acid is sulphur containing amino acids with the AAS and CS being 0.91 and 0.52 respectively, similar to those of cow's milk protein. The percentage of EAA and the EAA index are 49.1% and 96.96%, as high as those of cow's milk. The results of the rat experiment designed according to AOAC showed that the PER, NPR, AD, TD, BV, NPU of the protein are 3.01, 4.62, 90.49%, 96.75%, 86.02 and 83.22% respectively. Except that the AD of goat's milk protein is slightly higher than that of cow's milk protein, there is no significant difference between two milk proteins on other nutritional parameters. The present study gives the conclusion that the protein of powdered goat's milk is at least as nutritious as that of powdered cow's milk, but more nutritious than chemical pure casein and far more nutritious than isolated soy protein.

STUDY ON SERUM VITAMIN A, BETA-CAROTENE AND IMMUNE FUNCTION IN LUNG CANCER / 营养学报

Serum vitamin A, beta-carntene and lgG, IgA, IgM and T-lymphocyte Mastogenesis were measured in lung cancer patients, nonmalignant lung, disease and healthy controls matched lor age, sex and smoking. Mean serum vitamin A of lung cancer (except 5 adenocarcinoma) was significantly lower than that of healthy controls and non-malignant lung disease. Beta-caroiene levels were within the normal range, but mean serum beta-carotene concentration oi lung cancer patients was 24.7% lower, IgA of lung career and non-malignant lung disease patients was significantly higher, IgM and the rate of T-lymphocy te, blastogenesis of patients with lung cancer were lower than that of healthy controls, respectively. Serum IgG was not significant in 3 groups. An inverse relation, between serum vitamin A and IgM of hcalthy controls and arelation between serum vitamin A and IgG of lung cancer patients were observed. These data demonstrate an influence of vitamin A on immune function in lung cancer patients.