Impact of age on long‐term anticoagulation and how gender and monitoring setting affect it: implications for decision making and patient management

Aims Stabilization of anticoagulation control is seminal to reducing the risk of adverse effects of vitamin K antagonists. Reliable information on how ageing influences this is lacking. We set out to assess the true age‐related changes in anticoagulation control, how gender and patient setting influ...

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Veröffentlicht in:British journal of clinical pharmacology 2016-10, Vol.82 (4), p.1076-1083
Hauptverfasser: Abohelaika, Salah, Wynne, Hilary, Avery, Peter, Robinson, Brian, Kesteven, Patrick, Kamali, Farhad
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container_end_page 1083
container_issue 4
container_start_page 1076
container_title British journal of clinical pharmacology
container_volume 82
creator Abohelaika, Salah
Wynne, Hilary
Avery, Peter
Robinson, Brian
Kesteven, Patrick
Kamali, Farhad
description Aims Stabilization of anticoagulation control is seminal to reducing the risk of adverse effects of vitamin K antagonists. Reliable information on how ageing influences this is lacking. We set out to assess the true age‐related changes in anticoagulation control, how gender and patient setting influence this, and the possible implications of these for patient outcomes and management. Methods In atrial fibrillation (AF) patients of a unified anticoagulant service monitoring patients in general practice or hospital‐based clinics and housebound patients at home, international normalized ratio (INR) and warfarin dose data between 2000 and 2013 were extracted via the DAWN dosing program. Anticoagulation control was assessed by calculating percentage time spent within target INR (TTR). Results A total of 2094 AF patients [938 (44.8%) in general practice (GP) and 531 (25.4%) in hospital (H)‐based clinics and 625 (29.8%) through the domiciliary service (D)] were evaluated. The frequency of warfarin dose changes and INR monitoring events declined until about age 67, then increased as patients got older. The TTR according to age was significantly lower and the probability of having a TTR ≤65% according to age was higher for D than for H and GP, and females had a greater probability of having a TTR ≤65% than age‐matched males. Conclusion Identification of factors underlying poorer anticoagulation control in older housebound patients and the introduction of effective modifications to improve the clinical effectiveness of anticoagulation in such patients is needed.
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Reliable information on how ageing influences this is lacking. We set out to assess the true age‐related changes in anticoagulation control, how gender and patient setting influence this, and the possible implications of these for patient outcomes and management. Methods In atrial fibrillation (AF) patients of a unified anticoagulant service monitoring patients in general practice or hospital‐based clinics and housebound patients at home, international normalized ratio (INR) and warfarin dose data between 2000 and 2013 were extracted via the DAWN dosing program. Anticoagulation control was assessed by calculating percentage time spent within target INR (TTR). Results A total of 2094 AF patients [938 (44.8%) in general practice (GP) and 531 (25.4%) in hospital (H)‐based clinics and 625 (29.8%) through the domiciliary service (D)] were evaluated. The frequency of warfarin dose changes and INR monitoring events declined until about age 67, then increased as patients got older. The TTR according to age was significantly lower and the probability of having a TTR ≤65% according to age was higher for D than for H and GP, and females had a greater probability of having a TTR ≤65% than age‐matched males. Conclusion Identification of factors underlying poorer anticoagulation control in older housebound patients and the introduction of effective modifications to improve the clinical effectiveness of anticoagulation in such patients is needed.</description><identifier>ISSN: 0306-5251</identifier><identifier>EISSN: 1365-2125</identifier><identifier>DOI: 10.1111/bcp.13046</identifier><identifier>PMID: 27314636</identifier><language>eng</language><publisher>England: John Wiley and Sons Inc</publisher><subject>Adult ; Age Factors ; Aged ; ageing ; Anticoagulants - adverse effects ; anticoagulation ; atrial fibrillation ; Clinical Decision-Making ; Drug Monitoring ; Drug Safety ; Female ; General Practice - statistics &amp; numerical data ; Home Care Services - statistics &amp; numerical data ; Hospitalization - statistics &amp; numerical data ; Humans ; International Normalized Ratio ; Male ; Middle Aged ; Sex Factors ; stroke ; Time Factors ; Treatment Outcome ; TTR ; warfarin</subject><ispartof>British journal of clinical pharmacology, 2016-10, Vol.82 (4), p.1076-1083</ispartof><rights>2016 The British Pharmacological Society</rights><rights>2016 The British Pharmacological Society.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4156-5cf76dc223267bc4962c8f5f034072440d29ed27e85fc4b6fb6ec10ee3be567d3</citedby><cites>FETCH-LOGICAL-c4156-5cf76dc223267bc4962c8f5f034072440d29ed27e85fc4b6fb6ec10ee3be567d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fbcp.13046$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fbcp.13046$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,1427,27901,27902,45550,45551,46384,46808</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27314636$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Abohelaika, Salah</creatorcontrib><creatorcontrib>Wynne, Hilary</creatorcontrib><creatorcontrib>Avery, Peter</creatorcontrib><creatorcontrib>Robinson, Brian</creatorcontrib><creatorcontrib>Kesteven, Patrick</creatorcontrib><creatorcontrib>Kamali, Farhad</creatorcontrib><title>Impact of age on long‐term anticoagulation and how gender and monitoring setting affect it: implications for decision making and patient management</title><title>British journal of clinical pharmacology</title><addtitle>Br J Clin Pharmacol</addtitle><description>Aims Stabilization of anticoagulation control is seminal to reducing the risk of adverse effects of vitamin K antagonists. Reliable information on how ageing influences this is lacking. We set out to assess the true age‐related changes in anticoagulation control, how gender and patient setting influence this, and the possible implications of these for patient outcomes and management. Methods In atrial fibrillation (AF) patients of a unified anticoagulant service monitoring patients in general practice or hospital‐based clinics and housebound patients at home, international normalized ratio (INR) and warfarin dose data between 2000 and 2013 were extracted via the DAWN dosing program. Anticoagulation control was assessed by calculating percentage time spent within target INR (TTR). Results A total of 2094 AF patients [938 (44.8%) in general practice (GP) and 531 (25.4%) in hospital (H)‐based clinics and 625 (29.8%) through the domiciliary service (D)] were evaluated. The frequency of warfarin dose changes and INR monitoring events declined until about age 67, then increased as patients got older. The TTR according to age was significantly lower and the probability of having a TTR ≤65% according to age was higher for D than for H and GP, and females had a greater probability of having a TTR ≤65% than age‐matched males. Conclusion Identification of factors underlying poorer anticoagulation control in older housebound patients and the introduction of effective modifications to improve the clinical effectiveness of anticoagulation in such patients is needed.</description><subject>Adult</subject><subject>Age Factors</subject><subject>Aged</subject><subject>ageing</subject><subject>Anticoagulants - adverse effects</subject><subject>anticoagulation</subject><subject>atrial fibrillation</subject><subject>Clinical Decision-Making</subject><subject>Drug Monitoring</subject><subject>Drug Safety</subject><subject>Female</subject><subject>General Practice - statistics &amp; numerical data</subject><subject>Home Care Services - statistics &amp; numerical data</subject><subject>Hospitalization - statistics &amp; numerical data</subject><subject>Humans</subject><subject>International Normalized Ratio</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Sex Factors</subject><subject>stroke</subject><subject>Time Factors</subject><subject>Treatment Outcome</subject><subject>TTR</subject><subject>warfarin</subject><issn>0306-5251</issn><issn>1365-2125</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kc1uEzEUhS1E1YS0C14AecsijX_GnpQFEkT8RIpUFnRteTzXE8OMPfK4jbLjEdjwgjwJzgytYFFvru1z7ndtHYReUnJF81pVpr-inBTyGZpTLsWSUSaeoznhRC4FE3SGXgzDN0Iop1KcoxkrOS0kl3P0a9v12iQcLNYN4OBxG3zz-8fPBLHD2idngm7uWp1c1rSv8T4ccAO-hjgeu-BdCtH5Bg-Q0qlqayEjXXqDXde3zozNA7Yh4hqMG06oTn8fvRnRZx18ylc-v6HL2wt0ZnU7wOXfukC3Hz983Xxe7m4-bTfvdktTUJG_Zmwpa8MYZ7KsTHEtmVlbYQkvSMmKgtTsGmpWwlpYU1TSVhIMJQC8AiHLmi_Q24nb31Ud1CaPjrpVfXSdjkcVtFP_K97tVRPulaC8XHOeAa8ngIlhGCLYx15K1CkblbNRYzbZ--rfYY_OhzCyYTUZDq6F49Mk9X7zZUL-AVeEnkY</recordid><startdate>201610</startdate><enddate>201610</enddate><creator>Abohelaika, Salah</creator><creator>Wynne, Hilary</creator><creator>Avery, Peter</creator><creator>Robinson, Brian</creator><creator>Kesteven, Patrick</creator><creator>Kamali, Farhad</creator><general>John Wiley and Sons Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>5PM</scope></search><sort><creationdate>201610</creationdate><title>Impact of age on long‐term anticoagulation and how gender and monitoring setting affect it: implications for decision making and patient management</title><author>Abohelaika, Salah ; 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Reliable information on how ageing influences this is lacking. We set out to assess the true age‐related changes in anticoagulation control, how gender and patient setting influence this, and the possible implications of these for patient outcomes and management. Methods In atrial fibrillation (AF) patients of a unified anticoagulant service monitoring patients in general practice or hospital‐based clinics and housebound patients at home, international normalized ratio (INR) and warfarin dose data between 2000 and 2013 were extracted via the DAWN dosing program. Anticoagulation control was assessed by calculating percentage time spent within target INR (TTR). Results A total of 2094 AF patients [938 (44.8%) in general practice (GP) and 531 (25.4%) in hospital (H)‐based clinics and 625 (29.8%) through the domiciliary service (D)] were evaluated. The frequency of warfarin dose changes and INR monitoring events declined until about age 67, then increased as patients got older. 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subjects Adult
Age Factors
Aged
ageing
Anticoagulants - adverse effects
anticoagulation
atrial fibrillation
Clinical Decision-Making
Drug Monitoring
Drug Safety
Female
General Practice - statistics & numerical data
Home Care Services - statistics & numerical data
Hospitalization - statistics & numerical data
Humans
International Normalized Ratio
Male
Middle Aged
Sex Factors
stroke
Time Factors
Treatment Outcome
TTR
warfarin
title Impact of age on long‐term anticoagulation and how gender and monitoring setting affect it: implications for decision making and patient management
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