AspirinAnticoagulantsWarfarinInternational Normalized RatioPlatelet Aggregation InhibitorsHemorrhageThromboembolismAnti-Inflammatory Agents, Non-SteroidalHeparinAtrial FibrillationThrombosisWhole Blood Coagulation TimeVenous ThrombosisTiclopidinePhenprocoumonTreatment OutcomeBlood CoagulationFibrinolytic AgentsHeparin, Low-Molecular-WeightProthrombin TimeStrokeThromboxane B2Vitamin KPulmonary EmbolismAdministration, OralAcenocoumarolPlatelet AggregationRisk FactorsSalicylatesHeparin Antagonistsbeta-AlanineProspective StudiesVenous ThromboembolismCyclooxygenase InhibitorsDrug Therapy, CombinationTime FactorsDrug MonitoringFollow-Up StudiesPartial Thromboplastin TimePlatelet Function TestsRecurrenceRetrospective StudiesBlood PlateletsEmbolismHeart Valve ProsthesisDose-Response Relationship, DrugEnoxaparinVena Cava FiltersThrombophlebitisSodium SalicylateRisk AssessmentGastrointestinal HemorrhageDrug Administration ScheduleBlood Coagulation TestsPlatelet ActivationIntracranial HemorrhagesAntithrombinsFibrin Fibrinogen Degradation ProductsCerebral HemorrhageBleeding TimeHemofiltrationCoronary ThrombosisThrombophiliaAsthma, Aspirin-InducedHirudinsThrombolytic TherapyIncidenceHematomaCerebrovascular DisordersPostoperative HemorrhageTablets, Enteric-CoatedMyocardial InfarctionAntiphospholipid SyndromeCohort StudiesPipecolic AcidsDouble-Blind MethodCyclooxygenase 1Vitamin K Epoxide ReductasesDipyridamoleRandomized Controlled Trials as TopicProstaglandin-Endoperoxide SynthasesCitric AcidHirudin TherapyProtaminesBlood Coagulation DisordersIbuprofenDrug InteractionsDalteparinThromboxanesQuestionnairesPremedicationFactor XaThromboxane A2Point-of-Care SystemsBenzimidazolesEchocardiography, TransesophagealDrug ResistanceHemostasisSeverity of Illness IndexIschemic Attack, Transient