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- W2364397233 abstract "Objective To study the effects of different pneumoperitoneal pressures on hemodynamics and arterial blood gas in geriatric patients during laparoscopic surgery.Methods Thirty geriatric patients(aged 65 years) scheduled for elective laparoscopic radical resection of rectal cancer were randomly divided into two groups: group L(n= 15,the intra-abdominal pressure was kept at 10 mm Hg) and group H(n=15,the intra-abdominal pressure was kept at 14 mm Hg).After tracheal intubation,MAP,CVP,PCWP,MPAP and CO was recorded and used to derive hemodynamic parameters CI,SVR and PVR.Meanwhile,pH,PaCO2and PaO2 was determined by arterial blood gas analysis.Date were collected at seven time points: 15 minutes before pneumoperitoneum(T0),15 minutes after pneumoperitoneum was created and maintained at certain pressure,still in supine position(T1),15 min(T2),30 min(T3),60 min(T4) and 120 min(T5) after changing to Trendelenburg s position(20°),15 minutes after the conclusion of pneumoperitoneum and returning to supine position(T6).Results After pneumoperitoneum was created,MAP,CVP,PCWP,MPAP and PaCO2increased significantly while pH decreased significantly in both groups at T1-T5than those at T0(P0.01).Compared with T0,SVR increased significantly,PVR and CI decreased significantly at T1(P0.01) in both groups.After patients were placed in Trendelenburg s position(T2),SVR decreased significantly while PVR and CI increased significantly in both groups compared with those at T1(P 0.01).During pneumoperitoneum(T2-T5),MAP,CVP,PCWP,MPAP and HR in group H were higher than those in group L(P0.05 orP0.01).Conclusion High pneumoperitoneal pressure(14 mm Hg) exerts greater effect on the hemodynamics and arterial blood gas in geriatric patients during laparoscopic surgery than low pneumoperitoneal pressure(10 mm Hg)." @default.
- W2364397233 created "2016-06-24" @default.
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- W2364397233 date "2011-01-01" @default.
- W2364397233 modified "2023-09-26" @default.
- W2364397233 title "Effects of different pneumoperitoneal pressures on hemodynamics and arterial blood gas in geriatric patients during laparoscopic surgery" @default.
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