[Usefulness and safety of propranolol injection into vein for acquisition of coronary multidetector-row computed tomography].

Takako Sekine, Takahide Kodama, Takeshi Kondo, Shinichiro Fujimoto, Hideyuki Matsutani, Takehiro Arai, Hitomi Morita, Tomonari Sano, Yuji Saito, Shinichi Takase

Research output: Contribution to journalArticle

Abstract

A low heart rate (HR), associated with a prolonged slow filling phase (SF), is necessary to obtain a high quality coronary CT at a low radiation dose with conventional 64 multidetector-row computed tomography (MDCT). The purpose of our study was to confirm the safety of injecting propranolol (2-10 mg) into the vein for lowering heart rate in patients requiring MDCT and to document the effect of the drug on HR, PQ and SF. Of 1290 consecutive patients who were initially considered for enrollment in the coronary MDCT study, 40 patients with atrial fibrillations, 3 with atrial flutters, and 13 with artificial pacemakers were excluded. Of the remaining 1234 patients (M/F=714/520), 331 had already taken an oral beta-blocker before the CT examination, and were included in the study. In patients with no contraindications, propranolol was aggressively injected (2-10 mg) into the vein to reduce the HR. In patients not taking an oral beta blocker, 2 mg propranolol reduced the HR by -10±5 bpm and 10 mg, by -20±7 bpm. However, in patients taking an oral beta-blocker, the decrease in HR by propranolol was minimal (2 mg, -6±4 bpm; 10 mg, -10±6 bpm). Propranolol significantly prolonged the PQ interval (from 169±27 to 179±29 ms, P

Original languageEnglish
Pages (from-to)1539-1547
Number of pages9
JournalNippon Hoshasen Gijutsu Gakkai zasshi
Volume66
Issue number12
Publication statusPublished - Dec 20 2010

ASJC Scopus subject areas

  • Medicine(all)

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    Sekine, T., Kodama, T., Kondo, T., Fujimoto, S., Matsutani, H., Arai, T., Morita, H., Sano, T., Saito, Y., & Takase, S. (2010). [Usefulness and safety of propranolol injection into vein for acquisition of coronary multidetector-row computed tomography]. Nippon Hoshasen Gijutsu Gakkai zasshi, 66(12), 1539-1547.