Platelet count was determined using an automated cell counter, and prothrombin time and partial thromboplastin kaolin time (PTTK) were measured by a coagulometer. A bleeding time of 2–7 min, a clotting time of 4–9 min, a platelet count of 1.5–4 lacs/mm3,
a prothrombin time of 11–16 s (as per the control) and a PTTK of 30–40 s were considered normal. The data obtained were analysed using descriptive statistics and paired Student’s t-test to compare the results from baseline. Statistical analysis This was a preliminary, exploratory study to assess the effects of escitalopram and fluoxetine on coagulation profile Inhibitors,research,lifescience,medical in patients with major depression. Patient data were analysed on an intent-to-treat basis in Excel. Nominal data (e.g. sex) were expressed as number and percentage, and continuous data (e.g. age and coagulation parameters) as mean and standard deviation (SD). Paired Student’s t-test was used for a within-group Inhibitors,research,lifescience,medical (pre versus post) comparison. A p value of 0.05 or less was considered statistically significant. Results In both study groups, eight (40%) patients were men and 12 (60%) were women. The average age was 32 ± 10.89 years in the escitalopram group and 31.95 ± 9.45 years in the fluoxetine group. The coagulation Inhibitors,research,lifescience,medical profile for patients receiving escitalopram is given in Table 1. In the escitalopram
group, no significant differences in coagulation parameters were observed when buy PR-171 compared with baseline. Table 1. Coagulation profile for patients receiving escitalopram. The coagulation profile for patients receiving fluoxetine is given in Table 2. In this group, there was a significant increase in the bleeding time after 3 months of treatment compared with baseline, but this was not beyond the normal range as seen in the table. For the other parameters Inhibitors,research,lifescience,medical – clotting time, platelet count, prothrombin
time and PTTK – no significant differences were observed. Table 2. Coagulation profile for patients receiving fluoxetine. Discussion Life-time risk of major depression is 5–10% and is twice as common in women compared with men [Baldessani et al. 2006]. SSRIs are one of the most widely used drugs for the treatment of Inhibitors,research,lifescience,medical depression. They are well tolerated and have fewer side effects than older tricyclic antidepressants and are thus preferred [Rang et al. 2007]. A recent increased incidence of epistaxis and ecchymosis with SSRI use has been reported, probably because of impairment of platelet function. Serotonin is one of the GPX6 mediators released during platelet release reaction, causing platelet aggregation. In one study, five children aged between 8 and 15 years developed bruising or epistaxis 1 week to 3 months after starting SSRI treatment. It is possible that the impact of SSRIs on platelet function are causing these effects or a separate coagulopathy exists in these patients [Lake et al., 2000]. Gastric blood loss due to NSAIDs can be increased by SSRIs [Dalton et al. 2003, 2006; Weinreib et al.
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