Transverse abdominis Plane blocks (TAP) provide effective postoperative analgesia following surgical incisions of the lower and middle abdominal wall, including those associated with cesarean section. This study inves...Transverse abdominis Plane blocks (TAP) provide effective postoperative analgesia following surgical incisions of the lower and middle abdominal wall, including those associated with cesarean section. This study investigated the efficacy of liposomal bupivacaine diluted with 0.25% bupivacaine administered in bilateral TAP blocks for post-operative analgesia after Ce-sarean section preformed under neuraxial anesthesia. The patients who received the TAP blocks with liposomal bupivacaine had noticeably low pain scores of 1.0 ± 1.4, 1.4 ± 2.1, 1.7 ± 1.9, 1.9 ± 3.3 and 1.9 ± 2.3 at 6, 12, 24, 48 and 72 hours respectively. Only 3 patients used oxycodone (5 mg)/acetaminophen (325 mg) postoperative. One patient took two tables of oxycodone (5 mg)/acetamino-phen (325 mg) after 24 hours, a second patient used oxycodone (5 mg)/aceta-minophen (325 mg) after 72 hours and the third patient was transferred to the intensive care unit (ICU) since she developed postpartum cardiac complications, and was give oxycodone (5 mg)/acetaminophen (325 mg) despite having a 0 pain score. These results suggest that patients treated bilateral TAP blocks with a mixture of liposomal and regular bupivacaine will have low pain scores, high patient satisfaction and reduce the use of postoperative narcotics.展开更多
This paper proposed a method of injection-production system adjustment to solve the problem that the water flooding effect was restricted because of the horizontal and vertical contradictions during the development pr...This paper proposed a method of injection-production system adjustment to solve the problem that the water flooding effect was restricted because of the horizontal and vertical contradictions during the development process of fault block reservoirs. Considering the heterogeneity of reservoir, the Buckley-Leverett water flooding theory was applied to establish the relationship between the recovery and cumulative water injection. In order to achieve the goal of vertically balanced recovery of each section, the calculation method of vertical sectional injection allocation was proposed. The planar triangular seepage unit was assumed and sweep coefficients of different oil-water distribution patterns were characterized using multi-flow tube method. In order to balance and maximize the plane sweep coefficient, the calculation method of plane production system optimization was obtained. Then the injection-production system stereoscopic adjustment method based on equilibrium displacement was proposed with vertical sectional injection allocation and plane production system optimization. This method was applied to injection and production adjustment of BZ oilfield in southern Bohai. The effect of water control and oil increase was obvious. This method can greatly improve the effect of water flooding of offshore fault block reservoirs with the adjustment of injection-production system.展开更多
文摘Transverse abdominis Plane blocks (TAP) provide effective postoperative analgesia following surgical incisions of the lower and middle abdominal wall, including those associated with cesarean section. This study investigated the efficacy of liposomal bupivacaine diluted with 0.25% bupivacaine administered in bilateral TAP blocks for post-operative analgesia after Ce-sarean section preformed under neuraxial anesthesia. The patients who received the TAP blocks with liposomal bupivacaine had noticeably low pain scores of 1.0 ± 1.4, 1.4 ± 2.1, 1.7 ± 1.9, 1.9 ± 3.3 and 1.9 ± 2.3 at 6, 12, 24, 48 and 72 hours respectively. Only 3 patients used oxycodone (5 mg)/acetaminophen (325 mg) postoperative. One patient took two tables of oxycodone (5 mg)/acetamino-phen (325 mg) after 24 hours, a second patient used oxycodone (5 mg)/aceta-minophen (325 mg) after 72 hours and the third patient was transferred to the intensive care unit (ICU) since she developed postpartum cardiac complications, and was give oxycodone (5 mg)/acetaminophen (325 mg) despite having a 0 pain score. These results suggest that patients treated bilateral TAP blocks with a mixture of liposomal and regular bupivacaine will have low pain scores, high patient satisfaction and reduce the use of postoperative narcotics.
文摘This paper proposed a method of injection-production system adjustment to solve the problem that the water flooding effect was restricted because of the horizontal and vertical contradictions during the development process of fault block reservoirs. Considering the heterogeneity of reservoir, the Buckley-Leverett water flooding theory was applied to establish the relationship between the recovery and cumulative water injection. In order to achieve the goal of vertically balanced recovery of each section, the calculation method of vertical sectional injection allocation was proposed. The planar triangular seepage unit was assumed and sweep coefficients of different oil-water distribution patterns were characterized using multi-flow tube method. In order to balance and maximize the plane sweep coefficient, the calculation method of plane production system optimization was obtained. Then the injection-production system stereoscopic adjustment method based on equilibrium displacement was proposed with vertical sectional injection allocation and plane production system optimization. This method was applied to injection and production adjustment of BZ oilfield in southern Bohai. The effect of water control and oil increase was obvious. This method can greatly improve the effect of water flooding of offshore fault block reservoirs with the adjustment of injection-production system.
