Clinical Study Of Hemodynamic Changes Of Temporary Block Of Lower Abdominal Aorta

Objective: We observe blood pressure, heart rate and oxygen saturation changes, in order to assess clinical application of the temporary block of lower abdominal aorta.Method: The thesis starts from a retrospective analysis clinical data of 26 patients with pelvic and sacrococcygeal tumors from 2005.9-2010.1 who received a surgical treatment living in hospital. We compare changes of blood pressure, heart rate, pulse oxygen saturation and arterial oxygen saturation of patients with temporary block of lower abdominal aorta at the time of 5 minutes before blocking, 5 minutes after blocking, 5 minutes before removing blocking and 5 minutes after removing blocking. We compare changes of blood pressure, heart rate, pulse oxygen saturation and arterial oxygen saturation at the time of 30-minute blocking, 60-minutes blocking and blocking more than 60 minutes when blocking was removed. We also compare changes of blood pressure, heart rate, pulse oxygen saturation and arterial oxygen saturation at the time of 0.5 hour, 2 hour and 4 hour after blocking was removed. All measurement date using x±s to express, we use the SPSS statistics software to analyze date. Randomized block analysis of variance date and q test was used to compare the date.Result: Firstly, blood pressure compared at the time of 5 minutes before blocking, 5 minutes after blocking and 5 minutes before removing blocking have no significant difference (Systolic blood pressure P=0.080>0.05, Diastolic blood pressure P=0.136>0.05);Blood pressure compared at the time of 5 minutes before removing blocking and 5 minutes after removing blocking have significant difference (Systolic blood pressure P=0.001<0.05, Diastolic blood pressure P=0.000<0.05), blood pressure at the time of 5 minutes before removing blocking compared with 5 minutes after removing blocking significantly decreased. Blood pressure compared at the time of 30-minute blocking, 60-minutes blocking and blocking more than 60 minutes when it's removing blocking have no significant difference (Systolic blood pressure P=0.059>0.05, Diastolic blood pressure P=0.988>0.05). Blood pressure compared at the time of 0.5 hours after removing blocking and 2 hours after removing blocking have no significant difference(Systolic blood pressure P=0.315>0.05, Diastolic blood pressure P=0.731>0.05). Blood pressure compared at the time of 4 hours after removing blocking and 2 hours after removing blocking have significant difference(Systolic blood pressure P=0.000<0.05, Diastolic blood pressure P=0.047<0.05). Blood pressure at the time of 4 hours after removing blocking compared with 2 hours after removing blocking significantly increased. Secondly, heart rate at the time of 5 minutes after blocking compared with 5 minutes before blocking have significant difference (P=0.004<0.05), heart rate at the time of 5 minutes after blocking compared with 5 minutes before blocking become faster. Heart rate at the time of 5 minutes after removing blocking compared with 5 minutes before removing blocking have significant difference (P=0.001<0.05), heart rate at the time of 5 minutes after removing blocking compared with 5 minutes before removing blocking become faster. Heart rate compared at the time of 30-minute blocking, 60-minutes blocking and blocking more than 60 minutes when it's removing blocking have no significant difference(P=0.452>0.05). Heart rate compared at the time of 0.5 hours, 2 hours and 4 hours after removing blocking have no significant difference(P=0.535>0.05).Thirdly, pulse oxygen saturation and arterial oxygen saturation of patients compared at each time point can remain at 100% in the case of continuous oxygen.Conclusion: We observed 26 patients with the temporary block of lower abdominal aorta who have a little effect on blood pressure, heart rate and oxygen saturation and have greater applicability of clinical surgery.