P18 Treatment patterns and extent of inappropriate antimicrobial treatment among female patients with uncomplicated urinary tract infection in England

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Titel: P18 Treatment patterns and extent of inappropriate antimicrobial treatment among female patients with uncomplicated urinary tract infection in England

Beteiligte: Wilcox, Mark; Heaton, Dave; Mulgirigama, Aruni; Joshi, Ashish V; Chirikov, Viktor; Gibbons, Daniel C; Webb, David; Marston, Xiaocong L; Alexander, Myriam; Mitrani-Gold, Fanny S

Erschienen: Oxford University Press (OUP), 2023

Sprache: Englisch

DOI: 10.1093/jacamr/dlad077.022

ISSN: 2632-1823

Schlagwörter: Microbiology (medical) ; Infectious Diseases ; Immunology and Allergy ; Microbiology ; Immunology

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Beschreibung: Abstract Background and Objectives Inappropriate antimicrobial treatment of uncomplicated urinary tract infection (uUTI) has potential impacts on healthcare resource use and costs. We characterized treatment patterns for uUTI in England, including the extent of inappropriate treatment. Methods This retrospective cohort study utilized anonymized patient data from the Clinical Practice Research Datalink (CPRD) database from 1 January 2018 to 31 December 2019. Female patients ≥12 years with a diagnosis of community-acquired uUTI (index), who had received ≥1 oral antibiotic within ±5 days of index and had ≥14 months of CPRD data linked to English Hospital Episode Statistics data, were included. Patients who attended an accident and emergency department for urologic reasons, were hospitalized 28 days pre-index, or had complicated UTI or complicating comorbidities were excluded. uUTI episodes were defined as the 28-days post-index and follow-up data was captured through 29 February 2020, for a potential episode extension due to re-prescription. Treatment appropriateness for index uUTI in terms of drug class, duration and dose, was defined per NICE UTI guidelines (Figure 1). Figure 1.NICE recommendations for antibiotic treatment for non-pregnant female patients per NG109. This guideline was published on 31 October 2018, i.e. midway through the data/case review period. eGFR, estimated glomerular filtration rate; NG, NICE Guideline. Results Overall, 120519 female uUTI patients were evaluated. First-line therapy among 118540 female patients ≥16 years of age included nitrofurantoin (71%), trimethoprim (14.5%), amoxicillin (4%), pivmecillinam (2.7%) and fluoroquinolone (1.6%), with evident variation in treatment by age and line of therapy (Table 1). Inappropriate treatment, i.e. per above definition, was given to 52460 (43.5%) patients, and was less common among patients with re-prescription (35%) than without re-prescription (44%). Patients requiring a re-prescription were older, more often menopausal, had greater comorbid burden, and had higher prevalence of previous recurrent uUTI or prior exposure to antimicrobials (Table 2). Few regional or practice-level differences were observed (Table 2). Table 1.Most common antibiotic treatment at each line of therapy (%), among non-pregnant female patients by age group (aged ≥16 years and 12–15 years)Single-agent therapies/Metric≥16 years old, N (%)1L N=118540 (100)2L N=31425 (26.5)3L N=6672 (5.6)Nitrofurantoin n (%)84407 (71.2)11741 (37.4)1777 (26.6) Duration, mean (SD), median [IQR]4.26 (2.88), 3 [3–5]5.58 (6.10), 5 [3–7]6.88 (9.00), 5 [3–7]Trimethoprim n (%)17187 (14.5)6199 (19.7)1093 (16.4) Duration, mean (SD), median [IQR]4.81 (4.5), 3 [3–7]6.22 (7.12), 5 [3–7]8.71 (11.51), 7 [3–7]Pivmecillinam hydrochloride n (%)3201 (2.7)1924 (6.1)459 (6.9) Duration, mean (SD), median [IQR]21.91 (10.43), 28 [8–28]21.68 (10.54), 28 [7–28]21.26 (10.68), 28 [7–28]Fosfomycin trometamol n (%)365 (0.3)273 (0.9)94 (1.4) Duration, mean (SD), median [IQR]2.82 (6.42), 1 [1–1]3.42 (7.21), 1 [1–2]2.82 (6.04), 1 [1–2]12–15 years old, N (%)Single-agent therapies/Metric1L N=1979 (100)2L N=453 (22.9)3L N=67 (3.4)Nitrofurantoin n (%)1157 (58.5)168 (37.1)23 (34.3) Duration, mean (SD), median [IQR]3.84 (2.45), 3 [3–3]4.79 (2.81), 3 [3–7]4.52 (1.90), 3 [3–7]Trimethoprim n (%)630 (31.8)115 (25.4)13 (19.4) Duration, mean (SD), median [IQR]4.31 (3.31), 3 [3–5]5.50 (4.72), 4 [3–7]6.85 (6.64), 7 [3–7]Amoxicillin n (%)69 (3.5)40 (8.8)10 (14.9) Duration, mean (SD), median [IQR]6.91 (4.71), 7 [5–7]7.35 (6.10), 6 [5–7]10.40 (11.01), 5 [5–7]Cefalexin n (%)41 (2.1)35 (7.7)9 (13.4) Duration, mean (SD), median [IQR]7.44 (4.96), 7 [5–7]10.26 (10.81), 7 [5–7]8.00 (4.69), 7 [7–7]1L, first-line therapy; 2L, second-line therapy; 3L, third-line therapy. Table 2.Patient-level, region-level and practice-level characteristics for patients with inappropriate index antibiotic treatment overall, and by re-prescription statusVariable descriptionAll patients N=120519 (100)Patients with re-prescription n=8019 (6.7)Patients without re-prescription n=112500 (93.3)Inappropriate antibiotic, n (%)52460 (43.5)2807 (35.0)49653 (44.1)Patient-level characteristics Age at diagnosis, n (%) ≥12 to &lt;16638 (1.2)21 (0.7)617 (1.2) ≥16 to &lt;308300 (16)220 (7.8)8080 (16) ≥30 to &lt;407447 (14)249 (8.9)7198 (15) ≥40 to &lt;506105 (12)216 (7.7)5889 (12) ≥50 to &lt;6510372 (20)537 (19)9835 (20) ≥6519598 (37)1564 (56)18034 (36) Menopausal status, yes, n (%),15670 (30)1095 (39)14575 (29) History of recurrent uUTI, yes, n (%)2987 (5.7)412 (15)2575 (5.2) History of prior exposure to antimicrobial treatment, yes, n (%)34034 (65)2231 (79)31803 (64.05) Mild/moderate renal impairment, n (%)Yes1142 (2.2)106 (3.8)1036 (2.1) Liver disease, yes, n (%)47 (0.1)&lt;5 (&lt;0.2)NE Controlled diabetes, yes, n (%)1200 (2.3)114 (4.1)1086 (2.2) Charlson comorbidity index, mean (SD)0.22 (0.49)0.33 (0.58)0.21 (0.48) Index uUTI consultation as a home visit, yes, n (%)961 (1.8)89 (3.2)872 (1.8) Number of admissions in prior year, mean (SD)0.35 (0.85)0.52 (1.20)0.34 (0.82) Total number of days spent in hospital in prior year, mean (SD)3.55 (11.31)5.90 (15.60)3.37 (10.90) Number of A&E attendances in prior year, mean (SD)0.55 (1.32)0.66 (1.44)0.55 (1.31) Number of medication classes defined by each of BNF classes in the prior 12 months, n (%) Gastro-intestinal system22465 (46)1590 (58)20875 (45) Cardiovascular system21355 (44)1580 (58)19775 (43) Respiratory system13009 (27)835 (31)12174 (26) Central nervous system27791 (57)1864 (68)25927 (56) Infections34906 (71)2256 (82)32650 (70) Endocrine system14982 (31)1082 (40)13900 (30) Obstetrics, gynaecology and urinary-tract disorders14776 (30)925 (34)13851 (30) Malignant disease and immunosuppression756 (1.5)58 (2.1)698 (1.5) Nutrition and blood14420 (29)1043 (38)13377 (29) Musculoskeletal and joint diseases13239 (27)905 (33)12334 (27) Eye6110 (12)496 (18)5614 (12) Ear, nose and oropharynx7734 (16)524 (19)7210 (16) Skin14830 (30)1057 (39)13773 (30) Immunological products and vaccines6403 (13)473 (17)5930 (13) Anaesthesia1630 (3.3)98 (3.6)1532 (3.3) Preparations used in diagnosis0 (0)0 (0)0 (0) Other drugs and preparations239 (0.5)25 (0.9)214 (0.5)Region-level, n (%) Quintiles of IMDa Q127749 (23)2117 (26)25632 (23) Q224277 (20)1691 (21)22586 (20) Q322992 (19)1527 (19)21465 (19) Q422765 (19)1401 (18)21364 (19) Q522658 (19)1277 (16)21381 (19) Missing78 (0.1)6 (0.1)72 (0.1) Rural-urban area classification Rural15883 (13)1244 (16)14639 (13) Urban104636 (87)6775 (85)97861 (87)Practice-level, n (%) Small practice size (&lt;8000 patients)31762 (26)2016 (25)29746 (26) Medium practice size (8000–11000 patients)26189 (22)1733 (22)24456 (22) Large practice size (&gt;11000 patients)62222 (52)4258 (53)57964 (52)Q1, least deprived; Q5, most deprived. A&E, accident and emergency; IMD, index of multiple deprivation; NE, not estimable value; Q, quintile. Conclusions Inappropriate treatment, based on drug class, duration and dose, was common among patients with uUTI, and inappropriate treatment was higher among patients without re-prescription versus those with re-prescription. Patient-level differences, rather than regional- or practice-level differences, appear to drive inappropriate antibiotic use. The effect of inappropriate treatment on disease progression risk will be assessed in future work.

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