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Prevalence and risk factors of hyperprolactinemia among patients with various psychiatric diagnoses and medications.
International Journal of Psychiatry in Clinical Practice 2018 January 16
OBJECTIVES: Hyperprolactinemia is a common adverse event associated with psychotropic medications (mainly antipsychotics) used in the management of schizophrenia and bipolar disorders. The aim of this study was to estimate the prevalence of hyperprolactinemia in psychiatric patients and to evaluate its association with various psychiatric diagnoses and the use of various psychotropic medications.
METHODS: A cross-sectional observational study was conducted between July 2012 and June 2014. Patients were recruited from a number of hospitals located in the five regions of Saudi Arabia. Hyperprolactinemia was defined as blood prolactin levels >25 ng/mL in females and >20 ng/mL in males, regardless of the presence of symptoms.
RESULTS: A total of 997 patients (553 males and 444 females) were included in the current analysis. The average blood prolactin level was 32.6 ± 44.1 ng/mL, with higher levels among females than males (42.9 ± 61.3 versus 24.4 ± 18.6, p < .001). The prevalence of hyperprolactinemia was 44.3%, with no significant gender difference (41.9% in females versus 46.3% in males, p = .164) but with huge variability according to individual antipsychotic and other psychotropic medications. In the multivariate analysis adjusted for demographic and clinical characteristics, hyperprolactinemia was independently and positively associated with using antipsychotic medications (OR = 2.08, 1.26-3.42, p = .004). Additionally, previous hospitalisation, diabetes and hypothyroidism were positively associated, whereas having primary depressive disorders was negatively associated.
CONCLUSIONS: We report a high prevalence of hyperprolactinemia among a large sample of psychiatric patients in Saudi Arabia, which was linked to the use of antipsychotic medications. Routine measurement of blood prolactin levels for all patients maintained on antipsychotic agents is recommended, regardless of symptoms.
METHODS: A cross-sectional observational study was conducted between July 2012 and June 2014. Patients were recruited from a number of hospitals located in the five regions of Saudi Arabia. Hyperprolactinemia was defined as blood prolactin levels >25 ng/mL in females and >20 ng/mL in males, regardless of the presence of symptoms.
RESULTS: A total of 997 patients (553 males and 444 females) were included in the current analysis. The average blood prolactin level was 32.6 ± 44.1 ng/mL, with higher levels among females than males (42.9 ± 61.3 versus 24.4 ± 18.6, p < .001). The prevalence of hyperprolactinemia was 44.3%, with no significant gender difference (41.9% in females versus 46.3% in males, p = .164) but with huge variability according to individual antipsychotic and other psychotropic medications. In the multivariate analysis adjusted for demographic and clinical characteristics, hyperprolactinemia was independently and positively associated with using antipsychotic medications (OR = 2.08, 1.26-3.42, p = .004). Additionally, previous hospitalisation, diabetes and hypothyroidism were positively associated, whereas having primary depressive disorders was negatively associated.
CONCLUSIONS: We report a high prevalence of hyperprolactinemia among a large sample of psychiatric patients in Saudi Arabia, which was linked to the use of antipsychotic medications. Routine measurement of blood prolactin levels for all patients maintained on antipsychotic agents is recommended, regardless of symptoms.
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