• Kinomi Yomiya, Daisuke Takei, Hisashi Kurosawa, and Beni Kono.
• Dept. of Palliative Care, Saitama Cancer Center.
• Gan To Kagaku Ryoho. 2013 Aug 1;40(8):1037-41.

AbstractProchlorperazine is often used to prevent opioid-induced nausea; however, this drug causes extrapyramidal symptoms. It is important to determine the incidence of such symptoms and identify coping mechanisms because these symptoms induce intense and possibly life-threatening patient suffering. The purpose of this study was to determine the incidences of nausea and extrapyramidal symptoms associated with the use of prochlorperazine and perospirone as preventive antiemetics when initiating opioid treatment(a sustained-release tablet of oxycodone at a dose of 10 mg/day)and to compare the benefits of the 2 drugs. A total of 100 cancer patients who received medical care from a physician in the palliative care department of our center between May 2007 and September 2008 were consecutively enrolled for a retrospective review of the medical records. Of the patients, 50 had received prochlorperazine treatment(10 or 15 mg/day, orally)and 50 had received perospirone treatment(4 or 8 mg/day, orally)concomitantly with oxycodone treatment(10 mg/day)on an in-patient or outpatient basis. The incidence of nausea and vomiting within 1 week after starting treatment with opioids and the extrapyramidal symptoms during treatment were evaluated. The results showed that the incidence of nausea and vomiting was 8. 0% for the prochlorperazine group and 4. 0% for the perospirone group, and this difference was not statistically significant; however, the incidence of extrapyramidal symptoms was significantly higher for the prochlorperazine group(14%)than for the perospirone group(0%). Furthermore, the extrapyramidal symptom observed in the prochlorperazine group was akathisia, which occurred within a week. The results of this study suggest that careful attention should be paid so as not to overlook akathisia when using prochlorperazine as an antiemetic in cancer patients and that atypical antipsychotics, such as perospirone, could be used as alternatives.

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