Of 1490 articles identified , we included 3 papers and 1 abstract with patients on aspirin and/or NSAIDs , 1 paper on warfarin , 2 abstracts on clopidogrel , and 2 papers on clopidogrel plus aspirin and/or NSAIDs .
Systematic review with meta-analysis: the risk of gastrointestinal haemorrhage post-polypectomy in patients receiving anti-platelet, anti-coagulant and/or thienopyridine medications. For patients undergoing colonoscopy with polypectomy, current guidelines recommend temporary cessation of blood-thinning medications. The data regarding periprocedural management of these medications are sparse. ### aim To perform a systematic review and meta-analysis to determine the risk of post-polypectomy bleeding (PPB) in patients taking anti-platelet, anti-coagulant and/or thienopyridine medications. ### methods We searched Pubmed, Scopus, Web of Science, Biosis and Proceedings First from 1970 to 2015. PPB was defined as overt haemorrhage or drop in haemoglobin of at least 2 g/dL. ### results Of 1490 articles identified , we included 3 papers and 1 abstract with patients on aspirin and/or NSAIDs , 1 paper on warfarin , 2 abstracts on clopidogrel , and 2 papers on clopidogrel plus aspirin and/or NSAIDs . While the rate of immediate PPB on aspirin and/or NSAIDs was not increased (OR = 1.1, 95% CI 0.7-1.9, P = 0.7), the risk of delayed PPB was increased (OR = 1.7, 95% CI 1.0-2.4, P = 0.0009, I(2)  = 60%) but rendered non-significant with elimination of a small study. There was an elevated risk of delayed PPB on clopidogrel (OR = 9.7, 95% CI 3.1-30.8, P = 0.0, I(2)  = 0). There was an increased risk of delayed PPB in patients on clopidogrel + aspirin and/or NSAIDs (OR = 3.4, 95% CI 1.3-8.8, P = 0.01, I(2)  = 0). Based on a single study on warfarin, the PPB rate was elevated. There were no data regarding PPB and usage of the newer anti-coagulant agents. ### conclusions Usage of aspirin or NSAIDs does not increase risk of post-polypectomy bleeding. clopidogrel and warfarin should be discontinued in the periprocedural period to prevent the occurrence of post-polypectomy bleeding.
### Instruction:
            Given the context about compound efficacy for the given treatment mentioned within the input, mentioned the compounds 
            that can co-occur for the mentioned treatment

            ### Input:
            Systematic review with meta-analysis: the risk of gastrointestinal haemorrhage post-polypectomy in patients receiving anti-platelet, anti-coagulant and/or thienopyridine medications. For patients undergoing colonoscopy with polypectomy, current guidelines recommend temporary cessation of blood-thinning medications. The data regarding periprocedural management of these medications are sparse. ### aim To perform a systematic review and meta-analysis to determine the risk of post-polypectomy bleeding (PPB) in patients taking anti-platelet, anti-coagulant and/or thienopyridine medications. ### methods We searched Pubmed, Scopus, Web of Science, Biosis and Proceedings First from 1970 to 2015. PPB was defined as overt haemorrhage or drop in haemoglobin of at least 2 g/dL. ### results Of 1490 articles identified , we included 3 papers and 1 abstract with patients on aspirin and/or NSAIDs , 1 paper on warfarin , 2 abstracts on clopidogrel , and 2 papers on clopidogrel plus aspirin and/or NSAIDs . While the rate of immediate PPB on aspirin and/or NSAIDs was not increased (OR = 1.1, 95% CI 0.7-1.9, P = 0.7), the risk of delayed PPB was increased (OR = 1.7, 95% CI 1.0-2.4, P = 0.0009, I(2)  = 60%) but rendered non-significant with elimination of a small study. There was an elevated risk of delayed PPB on clopidogrel (OR = 9.7, 95% CI 3.1-30.8, P = 0.0, I(2)  = 0). There was an increased risk of delayed PPB in patients on clopidogrel + aspirin and/or NSAIDs (OR = 3.4, 95% CI 1.3-8.8, P = 0.01, I(2)  = 0). Based on a single study on warfarin, the PPB rate was elevated. There were no data regarding PPB and usage of the newer anti-coagulant agents. ### conclusions Usage of aspirin or NSAIDs does not increase risk of post-polypectomy bleeding. clopidogrel and warfarin should be discontinued in the periprocedural period to prevent the occurrence of post-polypectomy bleeding.

            ### Response:
            aspirin, warfarin, clopidogrel, clopidogrel, aspirin
            