Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms

Toshinori Matsuzaki; Isao Akasu; Masahiro Tanaka; Yusuke Sasaki; Kota Yamakawa; Ryo Kitagawa; Hirotaka Yoshida; Jun Sakai; Shinichi Numazawa; Yasunobu Itoh; Sadayoshi Watanabe; Takuji Yamamoto; Terushige Toyooka; Kojiro Wada; Kentaro Mori

doi:10.7887/jcns.30.224

Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms

Toshinori Matsuzaki, Isao Akasu, Masahiro Tanaka, Yusuke Sasaki, Kota Yamakawa, Ryo Kitagawa, Hirotaka Yoshida, Jun Sakai, Shinichi Numazawa, Yasunobu Itoh, Sadayoshi Watanabe, Takuji Yamamoto, Terushige Toyooka, Kojiro Wada, Kentaro Mori

Research output: Contribution to journal › Article › peer-review

Abstract

Among 300 consecutive cases of clipped unruptured cerebral aneurysms, asymptomatic（silent）hemor-rhaging was detected intraoperatively in 8 cases（2.7％）. The aneurysms with silent hemorrhaging were smaller（mean maximum diameter：5.4 mm）and exhibited a lower bleb detection rate on preoperative 3D‒ CT angiography（25％）. In multivariate analysis, aneurysmal size and hypertension demonstrated trends towards significant associations with silent rupturing. Therefore, aneurysms with silent hemorrhagic bleb （blister）tend to cause minor leaks, which are hard to detect on preoperative 3D‒CT angiography.

Original language	English
Pages (from-to)	224-229
Number of pages	6
Journal	Japanese Journal of Neurosurgery
Volume	30
Issue number	3
DOIs	https://doi.org/10.7887/jcns.30.224
Publication status	Published - 2021
Externally published	Yes

All Science Journal Classification (ASJC) codes

Surgery
Clinical Neurology

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10.7887/jcns.30.224

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Matsuzaki, T., Akasu, I., Tanaka, M., Sasaki, Y., Yamakawa, K., Kitagawa, R., Yoshida, H., Sakai, J., Numazawa, S., Itoh, Y., Watanabe, S., Yamamoto, T., Toyooka, T., Wada, K., & Mori, K. (2021). Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms. Japanese Journal of Neurosurgery, 30(3), 224-229. https://doi.org/10.7887/jcns.30.224

Matsuzaki, Toshinori ; Akasu, Isao ; Tanaka, Masahiro ; Sasaki, Yusuke ; Yamakawa, Kota ; Kitagawa, Ryo ; Yoshida, Hirotaka ; Sakai, Jun ; Numazawa, Shinichi ; Itoh, Yasunobu ; Watanabe, Sadayoshi ; Yamamoto, Takuji ; Toyooka, Terushige ; Wada, Kojiro ; Mori, Kentaro. / Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms. In: Japanese Journal of Neurosurgery. 2021 ; Vol. 30, No. 3. pp. 224-229.

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title = "Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms",

abstract = "Among 300 consecutive cases of clipped unruptured cerebral aneurysms, asymptomatic（silent）hemor-rhaging was detected intraoperatively in 8 cases（2.7％）. The aneurysms with silent hemorrhaging were smaller（mean maximum diameter：5.4 mm）and exhibited a lower bleb detection rate on preoperative 3D‒ CT angiography（25％）. In multivariate analysis, aneurysmal size and hypertension demonstrated trends towards significant associations with silent rupturing. Therefore, aneurysms with silent hemorrhagic bleb （blister）tend to cause minor leaks, which are hard to detect on preoperative 3D‒CT angiography.",

author = "Toshinori Matsuzaki and Isao Akasu and Masahiro Tanaka and Yusuke Sasaki and Kota Yamakawa and Ryo Kitagawa and Hirotaka Yoshida and Jun Sakai and Shinichi Numazawa and Yasunobu Itoh and Sadayoshi Watanabe and Takuji Yamamoto and Terushige Toyooka and Kojiro Wada and Kentaro Mori",

year = "2021",

doi = "10.7887/jcns.30.224",

language = "English",

volume = "30",

pages = "224--229",

journal = "Japanese Journal of Neurosurgery",

issn = "0917-950X",

publisher = "Japanese Congress of Neurological Surgeons",

number = "3",

}

Matsuzaki, T, Akasu, I, Tanaka, M, Sasaki, Y, Yamakawa, K, Kitagawa, R, Yoshida, H, Sakai, J, Numazawa, S, Itoh, Y, Watanabe, S, Yamamoto, T, Toyooka, T, Wada, K & Mori, K 2021, 'Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms', Japanese Journal of Neurosurgery, vol. 30, no. 3, pp. 224-229. https://doi.org/10.7887/jcns.30.224

Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms. / Matsuzaki, Toshinori; Akasu, Isao; Tanaka, Masahiro; Sasaki, Yusuke; Yamakawa, Kota; Kitagawa, Ryo; Yoshida, Hirotaka; Sakai, Jun; Numazawa, Shinichi; Itoh, Yasunobu; Watanabe, Sadayoshi; Yamamoto, Takuji; Toyooka, Terushige; Wada, Kojiro; Mori, Kentaro.

In: Japanese Journal of Neurosurgery, Vol. 30, No. 3, 2021, p. 224-229.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms

AU - Matsuzaki, Toshinori

AU - Akasu, Isao

AU - Tanaka, Masahiro

AU - Sasaki, Yusuke

AU - Yamakawa, Kota

AU - Kitagawa, Ryo

AU - Yoshida, Hirotaka

AU - Sakai, Jun

AU - Numazawa, Shinichi

AU - Itoh, Yasunobu

AU - Watanabe, Sadayoshi

AU - Yamamoto, Takuji

AU - Toyooka, Terushige

AU - Wada, Kojiro

AU - Mori, Kentaro

PY - 2021

Y1 - 2021

N2 - Among 300 consecutive cases of clipped unruptured cerebral aneurysms, asymptomatic（silent）hemor-rhaging was detected intraoperatively in 8 cases（2.7％）. The aneurysms with silent hemorrhaging were smaller（mean maximum diameter：5.4 mm）and exhibited a lower bleb detection rate on preoperative 3D‒ CT angiography（25％）. In multivariate analysis, aneurysmal size and hypertension demonstrated trends towards significant associations with silent rupturing. Therefore, aneurysms with silent hemorrhagic bleb （blister）tend to cause minor leaks, which are hard to detect on preoperative 3D‒CT angiography.

AB - Among 300 consecutive cases of clipped unruptured cerebral aneurysms, asymptomatic（silent）hemor-rhaging was detected intraoperatively in 8 cases（2.7％）. The aneurysms with silent hemorrhaging were smaller（mean maximum diameter：5.4 mm）and exhibited a lower bleb detection rate on preoperative 3D‒ CT angiography（25％）. In multivariate analysis, aneurysmal size and hypertension demonstrated trends towards significant associations with silent rupturing. Therefore, aneurysms with silent hemorrhagic bleb （blister）tend to cause minor leaks, which are hard to detect on preoperative 3D‒CT angiography.

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Study of asymptomatic（silent）hemorrhaging in patients with unrup-tured cerebral aneurysms

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