{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:25:05Z","timestamp":1772252705341,"version":"3.50.1"},"reference-count":27,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T00:00:00Z","timestamp":1715212800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Brit J Clinical Pharma"],"published-print":{"date-parts":[[2024,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aims<\/jats:title><jats:p>The 20:1 combination of cafedrine and theodrenaline (C\/T) is widely used in Germany for the treatment of arterial hypotension. Since there is little knowledge about the impact of covariates on the effect, the aim was to develop a kinetic\/pharmacodynamic covariate model describing mean arterial pressure (MAP), systolic (SBP) and diastolic blood pressure (DBP), and heart rate (HR) for 30\u2009min after the administration of C\/T.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data of patients receiving C\/T from the HYPOTENS study (NCT02893241, DRKS00010740) were analysed using nonlinear mixed\u2010effects modelling techniques.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Overall, 16\u2009579 measurements from 315 patients were analysed. The combination of two kinetic compartments and a delayed effect model, coupled with distinct Emax models for HR, SBP and DBP, described the data best. The model included age, sex, body mass index (BMI), antihypertensive medication, American Society of Anaesthesiologists (ASA) physical status classification grade, baseline SBP at the time of hypotension and pre\u2010surgery HR as covariates (all <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001). A higher baseline SBP led to a lower absolute increase in MAP. Patients with higher age, higher BMI and lower ASA grade showed smaller increases in MAP. The initial increase was similar for male and female patients. The long\u2010term effect was higher in women. Concomitant antihypertensive medication caused a delayed effect and a lower maximum MAP. The HR increased only slightly (median increase 2.6\u00a0bpm, <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Seven covariates with an impact on the effect of C\/T could be identified. The results will enable physicians to optimize the dose with respect to individual patients.<\/jats:p><\/jats:sec>","DOI":"10.1111\/bcp.16083","type":"journal-article","created":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T07:29:28Z","timestamp":1715239768000},"page":"1964-1974","source":"Crossref","is-referenced-by-count":5,"title":["Population kinetic\/pharmacodynamic modelling of the haemodynamic effects of cafedrine\/theodrenaline (Akrinor) under general anaesthesia"],"prefix":"10.1111","volume":"90","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6550-2819","authenticated-orcid":false,"given":"Christiane","family":"Dings","sequence":"first","affiliation":[{"name":"Clinical Pharmacy Saarland University  Saarbr\u00fccken Germany"},{"name":"Saarmetrics GmbH  Saarbr\u00fccken Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thorsten","family":"Lehr","sequence":"additional","affiliation":[{"name":"Clinical Pharmacy Saarland University  Saarbr\u00fccken Germany"},{"name":"Saarmetrics GmbH  Saarbr\u00fccken Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Benjamin","family":"Vojnar","sequence":"additional","affiliation":[{"name":"Department of Anaesthesiology and Intensive Care Philipps\u2010University Marburg  Marburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christine","family":"Gaik","sequence":"additional","affiliation":[{"name":"Department of Anaesthesiology and Intensive Care Philipps\u2010University Marburg  Marburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tilo","family":"Koch","sequence":"additional","affiliation":[{"name":"Department of Anaesthesiology and Intensive Care Philipps\u2010University Marburg  Marburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leopold H. 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