The aim of this study was to determine the arterial blood pressure
   changes in adult patients under operated through general anesthesia one
   of the training hospitals in Iran University of Medical Sciences. 

          This study was a comparative analytic descriptive study , and was
   performed in one of the related hospitals in Iran University of Medical
   Sciences in 1991. In this research , arterial blood pressure of forty patients
   was recorded using the mercurial sphygmomanometer , stethoscope and
   direct observation. The mentioned data were analyzed through paired
   t.test. 

          The results indicated that the means of the differences in the mentioned
   patient systolic blood pressure prior to induction of anesthesia,
   during anesthesia, and immediately after extubation were 10, 18.62 and
   11 mmHg respectively. Also  the means of the differences in the same
   patients diastolic B.P in these stage in comparison with their B.P in the ward
   were 3.25 , 5.67 , 8.87 and 6.62, respectively and the paired t.test showed
   the meaningful differences.

          The results obtained from the statistical analysis showed the patients
   blood pressure change in all stages ; prior to and after induction of
   anesthesia , during operation and immediately after the extubation.