Antipsychotic polypharmacy and adverse drug reactions among adults in a London mental health service, 2008–2018

Antipsychotic polypharmacy (APP) occurs commonly but it is unclear whether it is associated with an increased risk of adverse drug reactions (ADRs). Electronic health records (EHRs) offer an opportunity to examine APP using real-world data. In this study, we use EHR data to identify periods when pat...

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Veröffentlicht in:Psychological medicine 2023-07, Vol.53 (9), p.4220-4227
Hauptverfasser: Yang, Justin C., Thygesen, Johan H., Werbeloff, Nomi, Hayes, Joseph F., Osborn, David P. J.
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container_end_page 4227
container_issue 9
container_start_page 4220
container_title Psychological medicine
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creator Yang, Justin C.
Thygesen, Johan H.
Werbeloff, Nomi
Hayes, Joseph F.
Osborn, David P. J.
description Antipsychotic polypharmacy (APP) occurs commonly but it is unclear whether it is associated with an increased risk of adverse drug reactions (ADRs). Electronic health records (EHRs) offer an opportunity to examine APP using real-world data. In this study, we use EHR data to identify periods when patients were prescribed 2 + antipsychotics and compare these with periods of antipsychotic monotherapy. To determine the relationship between APP and subsequent instances of ADRs: QT interval prolongation, hyperprolactinaemia, and increased body weight [body mass index (BMI) ⩾ 25]. We extracted anonymised EHR data. Patients aged 16 + receiving antipsychotic medication at Camden & Islington NHS Foundation Trust between 1 January 2008 and 31 December 2018 were included. Multilevel mixed-effects logistic regression models were used to elucidate the relationship between APP and the subsequent presence of QT interval prolongation, hyperprolactinaemia, and/or increased BMI following a period of APP within 7, 30, or 180 days respectively. We identified 35 409 observations of antipsychotic prescribing among 13 391 patients. Compared with antipsychotic monotherapy, APP was associated with a subsequent increased risk of hyperprolactinaemia (adjusted odds ratio 2.46; 95% CI 1.87-3.24) and of registering a BMI > 25 (adjusted odds ratio 1.75; 95% CI 1.33-2.31) in the period following the APP prescribing. Our observations suggest that APP should be carefully managed with attention to hyperprolactinaemia and obesity.
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Multilevel mixed-effects logistic regression models were used to elucidate the relationship between APP and the subsequent presence of QT interval prolongation, hyperprolactinaemia, and/or increased BMI following a period of APP within 7, 30, or 180 days respectively. We identified 35 409 observations of antipsychotic prescribing among 13 391 patients. Compared with antipsychotic monotherapy, APP was associated with a subsequent increased risk of hyperprolactinaemia (adjusted odds ratio 2.46; 95% CI 1.87-3.24) and of registering a BMI &gt; 25 (adjusted odds ratio 1.75; 95% CI 1.33-2.31) in the period following the APP prescribing. Our observations suggest that APP should be carefully managed with attention to hyperprolactinaemia and obesity.</description><identifier>ISSN: 0033-2917</identifier><identifier>EISSN: 1469-8978</identifier><identifier>DOI: 10.1017/S0033291722000952</identifier><identifier>PMID: 35485715</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Adult ; Antipsychotic Agents - adverse effects ; Antipsychotics ; Body mass index ; Body weight ; Clinical outcomes ; Computerized medical records ; Critical incidents ; Drug-Related Side Effects and Adverse Reactions - epidemiology ; Electronic health records ; Electronic medical records ; Health records ; Health services ; Humans ; Hyperprolactinemia ; Hyperprolactinemia - chemically induced ; Hyperprolactinemia - drug therapy ; London ; Mental disorders ; Mental health ; Mental Health Services ; Natural language processing ; Obesity ; Original ; Original Article ; Polypharmacy ; Prescribing ; Prescription drugs ; Psychotropic drugs ; Regression analysis</subject><ispartof>Psychological medicine, 2023-07, Vol.53 (9), p.4220-4227</ispartof><rights>Copyright © The Author(s), 2022. 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J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Antipsychotic polypharmacy and adverse drug reactions among adults in a London mental health service, 2008–2018</atitle><jtitle>Psychological medicine</jtitle><addtitle>Psychol. Med</addtitle><date>2023-07-01</date><risdate>2023</risdate><volume>53</volume><issue>9</issue><spage>4220</spage><epage>4227</epage><pages>4220-4227</pages><issn>0033-2917</issn><eissn>1469-8978</eissn><abstract>Antipsychotic polypharmacy (APP) occurs commonly but it is unclear whether it is associated with an increased risk of adverse drug reactions (ADRs). Electronic health records (EHRs) offer an opportunity to examine APP using real-world data. In this study, we use EHR data to identify periods when patients were prescribed 2 + antipsychotics and compare these with periods of antipsychotic monotherapy. To determine the relationship between APP and subsequent instances of ADRs: QT interval prolongation, hyperprolactinaemia, and increased body weight [body mass index (BMI) ⩾ 25]. We extracted anonymised EHR data. Patients aged 16 + receiving antipsychotic medication at Camden &amp; Islington NHS Foundation Trust between 1 January 2008 and 31 December 2018 were included. Multilevel mixed-effects logistic regression models were used to elucidate the relationship between APP and the subsequent presence of QT interval prolongation, hyperprolactinaemia, and/or increased BMI following a period of APP within 7, 30, or 180 days respectively. We identified 35 409 observations of antipsychotic prescribing among 13 391 patients. Compared with antipsychotic monotherapy, APP was associated with a subsequent increased risk of hyperprolactinaemia (adjusted odds ratio 2.46; 95% CI 1.87-3.24) and of registering a BMI &gt; 25 (adjusted odds ratio 1.75; 95% CI 1.33-2.31) in the period following the APP prescribing. Our observations suggest that APP should be carefully managed with attention to hyperprolactinaemia and obesity.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><pmid>35485715</pmid><doi>10.1017/S0033291722000952</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-5485-615X</orcidid><orcidid>https://orcid.org/0000-0002-7479-3459</orcidid><orcidid>https://orcid.org/0000-0003-2286-3862</orcidid><orcidid>https://orcid.org/0000-0003-2881-4906</orcidid><orcidid>https://orcid.org/0000-0003-2519-1539</orcidid><oa>free_for_read</oa></addata></record>
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subjects Adult
Antipsychotic Agents - adverse effects
Antipsychotics
Body mass index
Body weight
Clinical outcomes
Computerized medical records
Critical incidents
Drug-Related Side Effects and Adverse Reactions - epidemiology
Electronic health records
Electronic medical records
Health records
Health services
Humans
Hyperprolactinemia
Hyperprolactinemia - chemically induced
Hyperprolactinemia - drug therapy
London
Mental disorders
Mental health
Mental Health Services
Natural language processing
Obesity
Original
Original Article
Polypharmacy
Prescribing
Prescription drugs
Psychotropic drugs
Regression analysis
title Antipsychotic polypharmacy and adverse drug reactions among adults in a London mental health service, 2008–2018
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