RESUMO
Background: Blood clotting is a process which prevents blood loss during injuries. Blood clots even when it is coming out from the blood vessels. Aloe vera is a perennial plant found all over India. It is commonly used in traditional system of medicine for treatment of wound healing, mouth ulcers, constipation, skin wrinkles and diabetes mellitus It is also used as antioxidant and antimicrobial agent. As it is used in traditional system of medicine for wound healing, this study was under taken to test the possible haemostatic effect of aloe vera.Methods: 12 rats were divided into two groups (control and test) with 6 rats in each group. Determination of Bleeding Time (BT), rat tail was warmed for one minute in water at 40?C and then dried. A small cut was made in the middle of the tail with a scalpel. In test group, a drop of aloe vera leaf extract was applied on the injured area immediately after making the cut in the middle of the tail, where as in the control group nothing was applied, and BT estimated. Determination of Clotting Time (CT), 12 test tubes were arranged in water bath at 37?C. Control Group: 0.4 ml of blood was collected from each rat in the control group and added to 6 test tubes kept in the water bath. Test group: For the remaining 6 test tubes 0.1 ml of aloe vera leaf extract was added. 0.4 ml of blood collected from the test group was added to these test tubes. The CT was estimated for both control group and test group.Results: The results were statistically analyzed by using unpaired t-test. The reduction in BT and CT for test group was statistically highly significant (p<0.001) compared to control group.Conclusions: In this study aloe vera leaf extract significantly reduced both BT and CT in the test group.
RESUMO
A Double blind randomized placebo controlled trial was conducted to evaluate the efficacy of Tranexamic acid in 54 patients with recent hemorrhoid bleeding. Age, gender, body weight, height, grade of hemorrhoid, time of onset of recent bleeding were comparable between two groups. Analysis of haemostatic effect or stop bleeding as an immediate outcome of this study revealed that in the grade 2 patients, 23/23 (100%) of tranexamic group and 18/23(78.26%) of placebo group the bleeding stop. After 3 days of observation, there was statistically significant different for the rate of stop bleeding as well as at the end of observation. Bleeding stop earlier in the Tranexamic group with median 4 days (3-5 days), compare to placebo, median 11(9.55-12.45). Analysis of recurrent bleeding as an outcome of this study revealed that in the placebo group 9/18(50%) of grade 2 patients and all grade 3 (100%)patients suffered from recurrent bleeding. Since the days 4, both group have significant different time for recurrent bleeding and at the end of observation, cumulative probability of free of bleeding between two groups significantly different. Median still stop bleeding in the placebo group was 36 days, and the tranexamic group never reaches the median until the end of observation. Conclusion: tranexamic acid was an effective drug to stop recent hemorrhoid bleeding and prevent further recurrent bleeding, significantly better than placebo.