Background: The “work style reform of physicians” is due to come into effect in April 2024. Cardiovascular surgery involves many life-saving surgeries after hours, and it is expected to be difficult to achieve the upper limit (level A) of 960 h per year and less than 100 h per month for overtime work. In 2021, there were five full-time cardiovascular surgeons, four of whom were responsible for performing emergency surgery for acute aortic dissection in our facility. The ability to provide emergency surgical care with any two-person combination increases the flexibility of staffing for routine surgery or after-hours on-call. The working environment and surgical outcomes of acute aortic dissection under this system are reported, and changes in work style in cardiovascular surgery are discussed. Methods: The surgical outcomes of 39 cases of acute aortic dissection requiring emergency open heart surgery at this hospital during the one-year period from January to December 2021 were investigated. The number of cases (and first assistants) performed by five full-time surgeons were 7(13), 9(6), 12(3), 11(7) and 0(10), respectively. In addition, there were 8 cases of acute aortic dissection requiring urgent stent graft treatment during the same period. The emergency response rate for emergency patients (including those other than acute aortic dissection) was 100% during the same period. Results: The age was 69 years (median), 48.7% were female, 92.3% were Stanford type A, of which 22.2% were DeBakey type II. Shock vital 20.5%, malperfusion 30.8%. The surgical procedures included TAR in 19 cases, PAR in 8 cases, HAR in 12 cases (including 2 Bentall). Concomitant operations were AVR in 5 cases, CABG in 2 cases, TEVAR in 1 case, lower limb arterioplasty in 2 cases and right hemispherectomy in 1 case. Operating time 400 min (median), extracorporeal circulation time 194 min (median), cardiac arrest 108 min (median), selective cerebral perfusion time 125 min (median), lower body circulation arrest 46 min (median). Hospital mortality 7.7%, stroke 12.8%, delayed paraparesis 2.6%. Ventilation time was 1 day (median), hospital stay 23 days (median), 64.1% were discharged at home. Working Environments: 12-13 on-calls per month. Maximum yearly overtime work is 480.5 h with full overtime pay. Exemptions from working after night shift were also possible. Conclusions: The surgical outcomes of acute aortic dissection at our hospital were acceptable. Not having a fixed surgeon enabled a flexible emergency response, and increased the flexibility of staffing for routine surgery and on-call, and was considered to enable both a change in working style and surgical safety while meeting the needs of the community.

Low-grade epilepsy-associated tumors (LEAT) are brain tumors that should be differentiated as a cause of symptomatic epilepsy in children. The most common initial symptom is epileptic seizure, particularly focal seizures. We present a case of LEAT in which an infant presented to our department with convulsive-like seizures that were observed from approximately 3 months of age. At the first visit, growth and development, including head circumference, were appropriate for age. The seizures were atypical, but ictal video electroencephalography showed abnormal waves indicative of left hemispheric epilepsy. The patient subsequently presented with somnolence and poor feeding, and a sudden increase in head circumference and hydrocephalus were observed. Thus, the patient was urgently admitted to the neurosurgery department of our hospital. Brain MRI showed a suspected brain tumor and elective craniotomy was performed. No epileptic seizures were observed postoperatively. When focal epileptic seizures are observed in infancy, a brain tumor should also be considered as a differential diagnosis, and further examination may be warranted.

Background: and Purpose To assess the long-term outcomes of intracranial dural arteriovenous fistula (DAVF) treated with stereotactic radiosurgery (SRS) alone or embolization and SRS (Emb-SRS) and to develop a grading system for predicting DAVF obliteration. Methods: This multi-institutional retrospective study included 200 patients with DAVF treated with SRS or Emb-SRS. We investigated the long-term obliteration rate and obliteration-associated factors. We developed a new grading system to estimate the obliteration rate. Additionally, we compared the outcomes of SRS and Emb-SRS by using propensity score matching. Results: The 3- and 4-year obliteration rates were 66.3% and 78.8%, respectively. The post-SRS hemorrhage rate was 2%. In the matched cohort, the SRS and Emb-SRS groups did not differ in the rates of obliteration (P=0.54) or post-SRS hemorrhage (P=0.50). In multivariable analysis, DAVF location and cortical venous reflux (CVR) were independently associated with obliteration. The new grading system assigned 2, 1, and 0 points to DAVFs in the anterior skull base or middle fossa, DAVFs with CVR or DAVFs in the superior sagittal sinus or tentorium, and DAVFs without these factors, respectively. Using the total points, patients were stratified into the highest (0 points), intermediate (1 point), or lowest (≥2 points) obliteration rate groups that exhibited 4-year obliteration rates of 94.4%, 71.3%, and 60.4%, respectively (P<0.01). Conclusions SRS-based therapy achieved DAVF obliteration in more than three-quarters of the patients at 4 years of age. Our grading system can stratify the obliteration rate and may guide physicians in treatment selection.

STUDY DESIGN: Retrospective study. PURPOSE: To investigate the relationship between preoperative total spinal sagittal alignment and the early onset of adjacent segment degeneration (ASD) after single-level posterior lumbar interbody fusion (PLIF) in patients with normal sagittal spinal alignment. OVERVIEW OF LITERATURE: Postoperative early-onset ASD is one of the complications after L4–L5 PLIF, a common surgical procedure for lumbar degenerative disease in patents without severe sagittal imbalance. A better understanding of the preoperative characteristics of total spinal sagittal alignment associated with early-onset ASD could help prevent the condition. METHODS: The study included 70 consecutive patients diagnosed with lumbar degenerative disease who underwent single-level L4–L5 PLIF between 2011 and 2015. They were divided into two groups based on the radiographic progression of L3–L4 degeneration after 1-year follow-up: the ASD and the non-ASD (NASD) group. The following radiographic parameters were preoperatively and postoperatively measured: sagittal vertebral axis (SVA), thoracic kyphosis (TK), lumbar lordosis, pelvic tilt, and pelvic incidence (PI). RESULTS: Eight of the 70 patients (11%) experienced ASD after PLIF (three males and five females; age, 64.4±7.7 years). The NASD group comprised 20 males and 42 females (age, 67.7±9.3 years). Six patients of the ASD group showed decreased L3–L4 disc height, one had L3–L4 local kyphosis, and one showed both changes. Preoperative SVA, PI, and TK were significantly smaller in the ASD group than in the NASD group (p <0.05). CONCLUSIONS: A preoperative small SVA and TK with small PI were the characteristic alignments for the risk of early-onset ASD in patients without preoperative severe sagittal spinal imbalance undergoing L4–L5 single-level PLIF.
Animals ; Female ; Follow-Up Studies ; Humans ; Incidence ; Kyphosis ; Lordosis ; Male ; Retrospective Studies

OBJECTIVE: To analyze patient characteristics of cancer rehabilitation and outcomes at our hospital. METHODS: This retrospective study analyzed 580 patients, who underwent cancer rehabilitation at our hospital and rehabilitation outcome after therapy were investigated. The relationship between the initial Barthel index and discharge outcomes was investigated, with a special focus on cancer patients with bone metastasis. The Barthel index and performance status (Eastern Cooperative Oncology Group) before and after rehabilitation were analyzed, and threshold value of home discharge was calculated from a receiver operating characteristic curve (ROC). General criteria for home discharge from our hospital included independence in performing basic activities of daily living such as bathing, feeding, and toileting or availability of home support from a family member/caregiver. RESULTS: The outcomes after rehabilitation among all the patients were as follows: discharge home 59%, death 13%, and others 27%. Statistical differences were observed between the initial and final values of the Barthel index in patients with bone metastasis, who could be discharged home (p=0.012). ROC analysis of the initial Barthel index for predicting home discharge revealed a threshold value of 60, sensitivity of 0.76, and specificity of 0.72. CONCLUSION: The patients with bone metastasis had a lower rate of home discharge and a higher rate of mortality than all the study patients who underwent cancer rehabilitation at our hospital. It is proposed that at the time of initiation of rehabilitation for patients with bone metastasis, an initial Barthel index lower than 60 might predict a worse outcome than home discharge.
Activities of Daily Living ; Asian Continental Ancestry Group* ; Baths ; Humans ; Mortality ; Neoplasm Metastasis* ; Rehabilitation ; Retrospective Studies ; ROC Curve ; Sensitivity and Specificity ; Treatment Outcome

A 50-year-old man with an extensive thoracic aortic aneurysm underwent staged surgery which consisted of preceding total aortic arch replacement with the frozen elephant trunk technique using J Graft Open Stent Graft^®, followed by open thoracoabdominal aortic aneurysm repair. During the second operation, the descending aorta was cross clamped along with the preexisting stent graft, and Dacron graft was anastomosed directly to the stent graft using a running 4-0 monofilament suture. The anastomosis site was then covered with a short piece of Dacron graft identical with the stent graft in size to secure hemostasis. We herein discuss our approach in this complex case, focusing on prevention of inadvertent events such as deformation of the preexisting stent graft and unexpected bleeding.

Objective: In this study, we evaluated distinctive types of physical predisposition in patients with common side effects.
Method: We selected 500 and 1,200 individuals with and without a previous diagnosis of side effects, respectively, through web-based research.  Then, we conducted a decision tree analysis for investigating the status of 100 types of physical predisposition in these individuals.
Results and Conclusion: The individuals who had suffered from hepatic disorder and answered “relevant” for “predisposition to swelling” (likelihood ratio of a positive result [LR+] 2.17; p=0.004) and “very relevant” for “predisposition to skin dryness” (LR+ 3.52; p<0.001) enhanced the probability of extracting individuals who developed side effects.  The individuals who had suffered from skin disorder and answered “relevant” for “predisposition to eczema and inflammation” and “not relevant” for “predisposition to higher temperature” had an LR+ of 2.22 (p<0.001).  The individuals with “predisposition to worsening of physical condition on a rainy or high-humidity day” are more likely to develop side effects with the use of antibiotics and NSAIDs, compared to those without this predisposition (antibiotics: LR+ 2.33; NSAIDs: LR+ 2.51).  The results of this study indicate that we can identify patients with a high risk of side effects through an interview on predisposition.

We evaluated the association between respiratory symptoms and hydration volume during last 1 week of life in terminal cancer patients using retrospective study. The subjects were 138 terminally patients with malignancies. Patients were classified into two groups: the low hydration group (group L, n=85) who received 1,000 ml or less of artificial hydration per day in 1 week before death and high hydration group (group H, n=53) who received over 1,000 ml per day. We compared appearance of dyspnea and bronchial secretion on group L with group H. 64.1% of group H had dyspnea, and 52.8% had bronchial secretion. These fractions are significantly higher than group L (32.9%, 15.3%). In the results of multiple regression analysis, lung involvement (odds ratio: 3.55), hydration over 1,000 ml per day (3.54), and administration of opioid (0.40) were significantly related dyspnea. Lung involvement (7.29), hydration over 1,000 ml per day (4.43), and oral intake (0.31) were significantly related bronchial secretion. Our results provide preliminary evidence that excessive artificial hydration therapies influence the respiratory symptoms in terminal cancer patients. 1,000 ml of hydration may be used as a rough indication in terminal stage.

1)Continuing medical education (CME) systems were researched in 10 countries. In all countries but one CME is mandatory. Only Spain has voluntary CME, as does Japan.
2)The traditional CME systems in many countries were changed after 2000. We believe this change reflects a global revolution associated with a new wave of medical risk management.
3)To provide better medical services, we must keep improving Japan's CME system. Such improvement is an important responsibility to society.