Usefulness and Safety of Propranolol Injection into Vein for Acquisition of Coronary Multidetector-row Computed Tomography
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- Sekine Takako
- Department of Radiological Technology, Takase Clinic
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- Kodama Takahide
- Department of Cardiology, Takase Clinic
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- Kondo Takeshi
- Department of Cardiology, Takase Clinic
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- Fujimoto Shinichiro
- Department of Cardiology, Takase Clinic
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- Matsutani Hideyuki
- Department of Radiological Technology, Takase Clinic
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- Arai Takehiro
- Department of Radiological Technology, Takase Clinic
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- Morita Hitomi
- Department of Radiological Technology, Takase Clinic
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- Sano Tomonari
- Department of Radiological Technology, Takase Clinic
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- Saito Yuji
- Department of Anesthesiology, Takase Clinic
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- Takase Shinichi
- Department of Cardiology, Takase Clinic
Bibliographic Information
- Other Title
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- 冠動脈MDCT撮影におけるプロプラノロール静注の有用性と安全性
- カンドウミャク MDCT サツエイ ニ オケル プロプラノロール ジョウチュウ ノ ユウヨウセイ ト アンゼンセイ
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Abstract
Background: 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. Method: 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. Result: 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<0.0001), and SF (from 125±69 to 264±79 ms, P<0.0001). Adverse effects of propranolol injection were observed in only 3 [2 mild hypotension and 1 paroxysmal atrial fibrillation (recovered to sinus rhythm by DC counter shock)] of 3212 patients. All 3 patients became stable after 1 or 2 hours of rest and could return home. Conclusion: Propranolol injection was a relatively safe and useful method to reduce HR and prolong SF, necessary for obtaining high quality coronary MDCT with a low radiation dose.
Journal
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- Japanese Journal of Radiological Technology
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Japanese Journal of Radiological Technology 66 (12), 1539-1547, 2010
Japanese Society of Radiological Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390001206362346496
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- NII Article ID
- 10027125380
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- NII Book ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC3M7lvVSqtg%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL BIB ID
- 10961410
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- PubMed
- 21282909
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed