{"id":"https://openalex.org/keywords/rr-interval","display_name":"RR interval","description":"An electrocardiographic measure of the time between successive R-wave peaks, used to assess heart rate and cardiac rhythm.","display_name_alternatives":["RR intervals","R-R intervals","R wave to R wave interval","inter beat interval","interbeat interval","R-R interval","R-to-R interval"],"ids":{"openalex":"https://openalex.org/keywords/rr-interval","wikidata":null},"primary_topic":{"id":"https://openalex.org/T10745","display_name":"Heart Rate Variability and Autonomic Control","score":0.4891,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10745","display_name":"Heart Rate Variability and Autonomic Control","score":0.4891,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11021","display_name":"ECG Monitoring and Analysis","score":0.152,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"works_count":8841,"cited_by_count":160480,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/rr-interval","updated_date":"2026-10-23T04:06:34","created_date":"2022-04-12T19:38:12"}