{"ok":true,"api":{"name":"SAIMSARA Evidence Object Discovery API","version":"v1"},"mode":"doc_key","editorial_verification":{"status":"human_reviewed","trust_label":"machine_generated_human_reviewed","method":"World ID proof-of-human editorial account","scope":["clinical_integrity","reference_quality","scientific_coherence"],"verification_note":"This Evidence Object is machine-generated and human-reviewed. World ID is used to verify that editorial oversight was submitted by a unique human account.","does_not_mean":"World ID verifies proof-of-human editorial oversight; it does not independently certify the scientific truth of every claim."},"object":{"object_type":"saimsara_evidence_object_metadata","doc_key":"vascular::IMPELLA_SS","issue_slug":"vascular","doc_id":"IMPELLA_SS","title":"Impella Devices for Cardiogenic Shock, High-Risk PCI, and Mechanical Circulatory Support","doi":"10.62487/saimsara7f98a528","doi_url":"https://doi.org/10.62487/saimsara7f98a528","version":"2026-05-15","source_name":"Semantic Scholar","article_url":"https://saimsara.com/sessions/impella-device-20260515-184929-7f98a528/","image_url":"","topic_tags":"Impella device,Cardiogenic shock,Mechanical circulatory support,Acute myocardial infarction,Left ventricular unloading,VA-ECMO,High-risk PCI,Anticoagulation,Thrombocytopenia,Hemolysis","keywords":["Impella device","Cardiogenic shock","Mechanical circulatory support","Acute myocardial infarction","Left ventricular unloading","VA-ECMO","High-risk PCI","Anticoagulation","Thrombocytopenia","Hemolysis"],"metrics":{"included_all":533,"included_original":432,"reference_index":194,"total_participants":989377},"discover_url":"https://saimsara.com/api/v1/discover.php?doc_key=vascular%3A%3AIMPELLA_SS","paid_evidence_url":"https://saimsara.com/api/v1/evidence.php?doc_key=vascular%3A%3AIMPELLA_SS","price":{"amount":"5.00","currency":"USD","units":5,"unit_amount":"1.00"},"payment_methods":["api_key","stripe_checkout","object_grant","x402"],"text_length":31124,"preview":"Results Key finding aligned to the query: Across the included original studies, the most consistent query-defining finding is that Impella functions as a versatile temporary MCS platform for ventricular unloading and hemodynamic stabilization, but its clinical value is highly context-dependent and closely tied to timing of initiation, shock severity, device selection, and complication management. In acute myocardial infarction–cardiogenic shock, early or pre-revascularization use was repeatedly associated with better outcomes in observational cohorts, including higher survival to explantation with first-line pre-PCI use than salvage use and better 1-year survival when Impella CP was initiate…","trust_label":"machine_generated_human_reviewed","editorial_verification":{"status":"human_reviewed","trust_label":"machine_generated_human_reviewed","method":"World ID proof-of-human editorial account","scope":["clinical_integrity","reference_quality","scientific_coherence"],"verification_note":"This Evidence Object is machine-generated and human-reviewed. World ID is used to verify that editorial oversight was submitted by a unique human account.","does_not_mean":"World ID verifies proof-of-human editorial oversight; it does not independently certify the scientific truth of every claim."},"checkout":{"method":"POST","url":"https://saimsara.com/create_checkout_session.php","content_type":"application/x-www-form-urlencoded","params":{"plan":"evidence_object","doc_key":"vascular::IMPELLA_SS"},"optional_params":{"customer_email":"user@example.com"},"price":{"amount":"5.00","currency":"USD","units":5,"unit_amount":"1.00"},"curl_example":"curl -X POST https://saimsara.com/create_checkout_session.php -d \"plan=evidence_object\" -d \"doc_key=vascular::IMPELLA_SS\" -d \"customer_email=user@example.com\""},"access_after_payment":{"header":"X-SAIMSARA-Payment-Proof","endpoint":"https://saimsara.com/api/v1/evidence.php?doc_key=vascular%3A%3AIMPELLA_SS","curl_example":"curl -H \"X-SAIMSARA-Payment-Proof: YOUR_PAYMENT_PROOF_TOKEN\" \"https://saimsara.com/api/v1/evidence.php?doc_key=vascular%3A%3AIMPELLA_SS\""}}}