The pattern of alteration in flow velocity in the recanalized artery is related to left ventricular recovery in patients with acute infarction and successful direct balloon angioplasty
Taro Tsunoda, MDa,
Masato Nakamura, MDa,
Tetsuzo Wakatsuki, MDa,
Takahiro Nishida, MDa,
Toshiyuki Asahara, MDa,
Hitoshi Anzai, MDa,
Hiroko Touma, MDa,
Kazuhisa Mitsuo, MDa,
Yasunari Soumitsu, MDa,
Hideo Sakatani, MDa,
Shigeru Nakamura, MDa,
Toshiyuki Degawa, MDa and
Tetsu Yamaguchi, MDa
a Third Department of Internal Medicine, Ohashi Hospital, Toho University Faculty of Medicine, Tokyo, Japan

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Figure 1 A, Time course of alterations in APV in nine patients (group D) who showed progressive decrease in velocity throughout monitoring. The average percent decrease in velocity from the maximum to the minimum value was 56%. B, Time course of alterations in APV in 10 patients (group I) who showed a gradual increase in velocity after a transient decrease 4 to 8 h after PTCA. The average percent increase in velocity from the minimum to the maximum value was 95%.
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Figure 2 Difference in time course of APV alterations between group D (lines with solid circles) and group I (lines with open squares) was significant (p < 0.0001) by two-way repeated analysis of variance. The APV at 15 minutes after PTCA and 4 h later in group D were 19.4 ± 5.4 and 15.0 ± 7.3 cm/sec, respectively, whereas those in group I were 20.7 ± 6.6 and 13.4 ± 7.5 cm/sec, respectively. Group I showed a larger APV at the end of monitoring than group D (21.2 ± 9.1 vs. 9.0 ± 3.5 cm/sec).
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