1. Antipsychotic dose mediates the association between polypharmacy and corrected QT interval
- Author
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Barbui, Corrado, Bighelli, Irene, Carrà, Giuseppe, Castellazzi, Mariasole, Lucii, Claudio, Martinotti, Giovanni, Nosè, Michela, Ostuzzi, Giovanni, Acciavatti, T., Adamo, A., Aguglia, A., Albanese, C., Baccaglini, S., Bardicchia, F., Barone, R., Barone, Y., Bartoli, F., Bergamini, C., Bertolini, F., Bolognesi, S., Bordone, A., Bortolaso, P., Bugliani, M., Calandra, C., Calò, S., Cardamone, G., Caroleo, M., Carra, E., Car-Retta, D., Chiocchi, L., Cinosi, E., Clerici, M., Corbo, M., Corsi, E., Costanzo, R., Costoloni, G., D'Arienzo, F., Debolini, S., De Capua, A., Di Napoli, W. A., Dinelli, M., Facchi, E., Fargnoli, F., Fiori, F., Franchi, A., Gardellin, F., Gastaldon, C., Gazzoletti, E., Ghio, L., Giacomin, M., Gregis, M., Iovieno, N., Koukouna, D., Lax, A., Lintas, C., Luca, A., Luca, M., Lussetti, M., Madrucci, M., Magnani, N., Magni, L., Manca, E., Martorelli, C., Mattafirri, R., Paladini, C., Papola, D., Percudani, M., Perini, G., Petrosemolo, P., Pezzullo, M., Piantanida, S., Pinna, F., Prato, K., Prestia, D., Quattrone, D., Reggianini, C., Restaino, F., Ribolsi, M., Rinosi, G., Rizzo, C., Rizzo, R., Roggi, M., Rossi, G., Rossi, S., Ruberto, S., Santi, M., Santoro, R., Sepede, G., Signorelli, M. S., Soscia, F., Sozzi, F., Staffa, P., Stilo, M., Strizzolo, S., Suraniti, F., Tavian, N., Tortelli, L., Tosoni, F., Valdagno, M., Zanobini, V., Barbui, C, Bighelli, I, Carrà, G, Castellazzi, M, Lucii, C, Martinotti, G, Nosè, M, Ostuzzi, G, Acciavatti, T, Adamo, A, Aguglia, A, Albanese, C, Baccaglini, S, Bardicchia, F, Barone, R, Barone, Y, Bartoli, F, Bergamini, C, Bertolini, F, Bolognesi, S, Bordone, A, Bortolaso, P, Bugliani, M, Calandra, C, Calò, S, Cardamone, G, Caroleo, M, Carra, E, Carretta, D, Chiocchi, L, Cinosi, E, Clerici, M, Corbo, M, Corsi, E, Costanzo, R, Costoloni, G, D'Arienzo, F, Debolini, S, De Capua, A, Di Napoli, W, Dinelli, M, Facchi, E, Fargnoli, F, Fiori, F, Franchi, A, Gardellin, F, Gastaldon, C, Gazzoletti, E, Ghio, L, Giacomin, M, Gregis, M, Iovieno, N, Koukouna, D, Lax, A, Lintas, C, Luca, A, Luca, M, Lussetti, M, Madrucci, M, Magnani, N, Magni, L, Manca, E, Martorelli, C, Mattafirri, R, Paladini, C, Papola, D, Percudani, M, Perini, G, Petrosemolo, P, Pezzullo, M, Piantanida, S, Pinna, F, Prato, K, Prestia, D, Quattrone, D, Reggianini, C, Restaino, F, Ribolsi, M, Rinosi, G, Rizzo, C, Rizzo, R, Roggi, M, Rossi, G, Rossi, S, Ruberto, S, Santi, M, Santoro, R, Sepede, G, Signorelli, M, Soscia, F, Sozzi, F, Staffa, P, Stilo, M, Strizzolo, S, Suraniti, F, Tavian, N, Tortelli, L, Tosoni, F, Valdagno, M, and Zanobini, V
- Subjects
Male ,Genetics and Molecular Biology (all) ,medicine.medical_treatment ,Aripiprazole ,lcsh:Medicine ,Pharmacology ,Cardiovascular Medicine ,dose-dependent risk ,Biochemistry ,Electrocardiography ,0302 clinical medicine ,Heart Rate ,Medicine and Health Sciences ,80 and over ,Antipsychotics ,lcsh:Science ,Aged, 80 and over ,Multidisciplinary ,Pharmaceutics ,Medicine (all) ,Mental Disorders ,Confounding ,Drug Information ,Drugs ,Middle Aged ,Long QT Syndrome ,Bioassays and Physiological Analysis ,Italy ,Cardiovascular Diseases ,Cardiology ,Female ,QT interval corrected for heart rate ,Adult ,Aged ,Antipsychotic Agents ,Cross-Sectional Studies ,Dose-Response Relationship ,Drug ,Haloperidol ,Humans ,Young Adult ,Polypharmacy ,Agricultural and Biological Sciences (all) ,medicine.drug ,Research Article ,medicine.medical_specialty ,Patients ,QTc lenghtening ,therapy risk ,Long QT syndrome ,antipsychotic drugs ,Research and Analysis Methods ,polypharmacy ,QT interval ,03 medical and health sciences ,Dose Prediction Methods ,Drug Therapy ,Internal medicine ,Dose-Response Relationship, Drug ,Biochemistry, Genetics and Molecular Biology (all) ,Heart rate ,medicine ,Antipsychotic ,Inpatients ,business.industry ,lcsh:R ,Electrophysiological Techniques ,medicine.disease ,030227 psychiatry ,Health Care ,Defined daily dose ,Settore MED/25 ,lcsh:Q ,Cardiac Electrophysiology ,business ,030217 neurology & neurosurgery - Abstract
Antipsychotic (AP) drugs have the potential to cause prolongation of the QT interval corrected for heart rate (QTc). As this risk is dose-dependent, it may be associated with the number of AP drugs concurrently prescribed, which is known to be associated with increased cumulative equivalent AP dosage. This study analysed whether AP dose mediates the relationship between polypharmacy and QTc interval. We used data from a cross-sectional survey that investigated the prevalence of QTc lengthening among people with psychiatric illnesses in Italy. AP polypharmacy was tested for evidence of association with AP dose and QTc interval using the Baron and Kenny mediational model. A total of 725 patients were included in this analysis. Of these, 186 (26%) were treated with two or more AP drugs (AP polypharmacy). The mean cumulative AP dose was significantly higher in those receiving AP polypharmacy (prescribed daily dose/defined daily dose = 2.93, standard deviation 1.31) than monotherapy (prescribed daily dose/defined daily dose = 0.82, standard deviation 0.77) (z = -12.62, p < 0.001). Similarly, the mean QTc interval was significantly longer in those receiving AP polypharmacy (mean = 420.86 milliseconds, standard deviation 27.16) than monotherapy (mean = 413.42 milliseconds, standard deviation 31.54) (z = -2.70, p = 0.006). The Baron and Kenny mediational analysis showed that, after adjustment for confounding variables, AP dose mediates the association between polypharmacy and QTc interval. The present study found that AP polypharmacy is associated with QTc interval, and this effect is mediated by AP dose. Given the high prevalence of AP polypharmacy in real-world clinical practice, clinicians should consider not only the myriad risk factors for QTc prolongation in their patients, but also that adding a second AP drug may further increase risk as compared with monotherapy.
- Published
- 2016