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RISS 인기검색어
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- 저자 : Yuki Matsushita (검색결과 5 건)
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Masao Fujiwara,Yuki Matsushita,Yoshikane Maeba,Ayano Suzuki,Hidekazu Fukamizu,Yoshiki Tokura 대한수부외과학회 2019 대한수부외과학회지 Vol.24 No.4
Purpose: First web space widening is crucial in the hand function. The skin on the dorsal side of the forearm can provide a thin and pliable skin suitable for first web space reconstruction. Although previous reports have described the use of the posterior interosseous artery (PIA) flap as a reverse-flow flap for treatment of first web space contracture, only a few have addressed its use as a free flap for this purpose. The caliber of the concomitant veins accompanying the PIA is usually small, which may give rise to a problem in the treatment.Methods: Seven patients with first web space contracture were treated with a free PIA flap and the details of the venous anastomosis method were elucidated.Results: Six of seven flaps survived. In a post-burn case, a flap was lost by late thrombosis. The PIA is anastomosed end-to-end to the dorsal branch of the radial artery. There are two choices for the recipient venous pedicle: concomitant veins of radial artery and a tributary of the cephalic vein. In our cases, there were four types of venous anastomosis. An average postoperative increase of the thumb radial abduction was 36° and that of the palmar abduction was 35°.Conclusion: Since the caliber of the concomitant veins accompanying the PIA is small, a careful scheme for venous anas-tomosis is essential in the treatment of first web space contracture using the free PIA flap.
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An unusual anatomical variation of the inferior alveolar nerve
Shogo Maekawa,Mizuki Nagata,Yuki Matsushita,R. Shane Tubbs,Joe Iwanaga 대한해부학회 2020 Anatomy & Cell Biology Vol.53 No.4
A number of studies have previously shown variations of inferior alveolar, however, only a few reports focused on nearby the foramen ovale. In a formalin fixed cadaver, we identified three minor branches (anterior, middle, and posterior branches) arising from the main trunk of the mandibular nerve adjacent to the foramen ovale, passing lateral to the maxillary artery (MA), and joining the inferior alveolar nerve. The diameter of the branches was 0.68 mm, 1.43 mm, and 0.40 mm, respectively. The branches traveled inside the lateral pterygoid muscle (LPM) or between the LPM and tensor/levator veli palatini. Moreover, all of the branches were superficial to MA. Knowledge of such a variation might be helpful to dentists during, for example, anesthetic blockade and various oral surgeries.
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The notch of the mandible: what do different fields call it?
Norio Kitagawa,Keiko Fukino,Yuki Matsushita,Soichiro Ibaragi,R. Shane Tubbs,Joe Iwanaga 대한해부학회 2023 Anatomy & Cell Biology Vol.56 No.3
The bony notch on the inferior border of the mandible, anterior to the attachment of the masseter muscle, wherethe facial vessels commonly pass, has been called different names in the literature, e.g., premasseteric notch, antegonial notch,and notch for the facial vessels. Interestingly, various disciplines have leaned toward different names for this notch. Therefore, to aid in consistent communication among professionals, the present study aimed to analyze usage of these varied terms and make recommendations for the best terminology. Based on the adjacent anatomical structures used to name this notch, three groups were analyzed in this study, a group using masseter in the term, a group using gonion in the term, and a group using facial vessels in the term. A literature search found that the group using gonion in the term was found most in the literature. The orthodontics field used gonion in the term the most (29.0%: 31/107) followed by the oral and maxillofacial surgery field (14.0%: 15/107), the plastic surgery field (4.7%: 5/107), and the anatomy field (3.7%: 4/107). The dental field used gonion in this term the most (43.9%: 47/107) and the medical field used facial vessels in the term the most (33.3%: 6/18). Based on these results, the use of gonial terms for this notch seems to be preferred.
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Sanuki, Takuro,Mishima, Gaku,Kurata, Shinji,Watanabe, Toshihiro,Kiriishi, Kensuke,Tachi, Mizuki,Ozaki, Yu,Okayasu, Ichiro,Kawai, Mari,Matsushita, Yuki,Miura, Keiichiro,Ayuse, Takao The Korean Dental Society of Anesthsiology 2015 Journal of Dental Anesthesia and Pain Medicine Vol.15 No.3
Background: We hypothesized that ketamine, when administered as the anesthetic induction agent, may prevent cardiovascular depression during high-dose remifentanil administration, unlike propofol. To test our hypothesis, we retrospectively compared the hemodynamic effects of ketamine, during high-dose remifentanil administration, with those of propofol. Methods: Thirty-eight patients who underwent oral surgery at the Nagasaki University Hospital between April 2014 and June 2015 were included in this study. Anesthesia was induced by the following procedure: First, high-dose remifentanil ($0.3-0.5{\mu}g/kg/min$) was administered 2-3 min before anesthesia induction;next, the anesthetic induction agent, either propofol (Group P) or ketamine (Group K), was administered. Mean arterial pressure (MAP) and the heart rate were recorded by the automated anesthesia recording system at four time points: immediately before the administration of high-dose remifentanil (T1);immediately before the administration of propofol or ketamine (T2);2.5 min (T3), and 5 min (T4) after the administration of the anesthetic induction agent. Results: In Group P, the MAP at T3 ($75.7{\pm}15.5mmHg$, P = 0.0015) and T4 ($68.3{\pm}12.5mmHg$, P < 0.001) were significantly lower than those at T1 ($94.0{\pm}12.4mmHg$). However, the MAP values in the K group were very similar (P = 0.133) at all time points. The heart rates in both Groups P (P = 0.254) and K (P = 0.859) remained unchanged over time. Conclusions: We showed that ketamine, when administered as the anesthetic induction agent during high-dose remifentanil administration, prevents cardiovascular depression.
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