We investigated the effects of low-intensity brief exercise on lymphocyte functions and plasma cytokine concentrations. Six young sedentary women performed 30-min walking exercise (6 km/h, 50–65% HR max) per day for 3 weeks. Each subject’s peripheral blood was sampled before training, 1 week and 3 weeks after training, and analyzed for natural killer (NK) cell activity, T cell proliferation activity, granzyme B, interleukin-2 (IL-2), IL-6, IL-10, IL-12p40 and interferon.γ (IFN-γ). Lymphocyte functions did not change significantly following training, but plasma concentrations of IL-12p40 decreased significantly. These results suggest that cytokine balance towards significant Th1>Th2 is induced by low-intensity training.

This study examined cytokine responses to cold exposure together with the effects of exercise and thermal adaptation. Ten male short-track skaters who had adapted to a cold environment, and ten male inline skaters who had not, were each assigned to two experimental conditions. For the cold condition, subjects sat for 60 min at 5–8°C, then exercised on a cycle ergometer for 60 min at 65% maximal oxygen uptake (at 5–8°C), and finally sat again for 120 min at room temperature (20–25°C). In the control condition, subjects participated in the same protocol as the above but at room temperature (20–25°C). Blood samples were collected at pre-cold exposure, post-cold exposure (pre-exercise), post-exercise, post-30 min, post-60 min, and post-120 min, and analyzed for plasma concentrations of interleukin (IL)-1 receptor antagonist (IL-1ra), IL-8, IL-10, IL-12p40, soluble tumor necrosis factor receptor I (sTNFR-I), cortisol, and myoglobin by using enzyme-linked immunosorbent assay (ELISA). 60-min cycle ergometer exercise induced significant increases in plasma IL-1ra, IL-10 and IL-12p40 at room temperature in short-track skaters adapted to the cold, but significant decreases in these cytokines were observed with exposure to cold. These results indicate that acute cold exposure has a suppressive effect on cytokine response during exercise, suggesting the possibility of preventive effects on immunosuppression, heat stroke and allergy induced by exercise.

Seven patients with congenital heart defects suffered from multiple major hemorrhages from the lung after surgery and 5 of them died at 8 to 54 postoperative days because of respiratory insufficiency. In a patient with tetralogy of Fallot associated with pulmonary atresia, bleeding occured after the second shunt operation, presumably from rupture of bronchial collateral vessels. The clinical diagnoses of the other 6 patients were coarctation of the aorta (CoA) with common atrioventricular canal (CAVC) in 1, triple shunt in 1, persistent truncus arteriosus in 2, total anomalous pulmonary venous connection in 1 and CAVC in 1. Subclavian flap aortoplasty was performed without pulmonary artery banding in the patient with CoA and CAVC, whereas complete repair was performed in the other 5 patients. As these patients were associated with severe pulmonary hypertension preoperatively and 4 of them encountered pulmonary hypertensive crisis, the hemorrhage from the lung may be related to pre and postoperative high pressure of the pulmonary artery. Dilatation and rupture of the pulmonary capillary net was demonstrated in the patient with CoA and CAVC. These findings suggest the hypothesis that bleeding occurred due to rupture of the capillary net as a result of transmission of high pressure. Major bleeding from the lung is a rare but catastrophic complication after repair of congenital heart defects. As the treatment is difficult, early surgical intervention and treatment of postoperative pulmonary hypertension are important in complex lesions with severe pulmonary hypertension.

The incidence of ventricular subepicardial aneurysm following myocardial infarction is quite low. We report a case of subepicardial aneurysm that was diagnosed on postoperative pathohistologic examination. A 69-year-old man was admitted to our hospital because of left ventricular aneurysm following myocardial infarction. The patient had left main trunk disease, triple-vessel coronary artery desease and low output syndrome. Under cardiopulmonary bypass with the heart arrested, the aneurysm was resected and the defect was closed. The suture line was reinforced using Teflon felt and GRF glue. A saphenous vein graft was anastmosed to the left anterior descending artery. On pathohistologic examination, the wall of the aneurysm was found to be composed of fibrotic tissue, myocardial fibers, medium-sized pericardial arteries, epicardium and fibrin thrombi. We diagnosed this as subepicardial aneurysm.

Methods: A total of 400 patients (175 men, 225 women) who underwent PLIF were observed for >1 year. Factors investigated included the frequency of cage retropulsion and surgical revision. In addition, physical (age, sex, disease), surgical (fusion and PLIF levels, cage number, grade 2 osteotomy), and comorbid (DISH, existing vertebral fracture) factors were compared between patients with and without cage retropulsion. Factors related to surgical revision during the observation period were also considered. Results: Cage retropulsion occurred in 15 patients and surgical revision was performed in 11. Revisions included the replacement of pedicle screws (PSs) with larger screws in all patients and supplementary implants in 10. Among the patients with cage retropulsion, the average PLIF level was 2.7, with DISH present in nine patients and existing vertebral fractures in six. Factors affecting cage retropulsion were diagnoses of osteoporotic vertebral fracture, multilevel fusion, single-cage insertion, grade 2 osteotomy, presence of DISH, and existing vertebral fracture. Multivariable analysis indicated that retropulsion of a fusion cage occurred significantly more frequently in patients with DISH and multilevel PLIF. Conclusions DISH and multilevel PLIF were significant risk factors affecting cage retropulsion. Revision surgery for cage retropulsion revealed PS loosening, suggesting that implant replacement was necessary to prevent repeat cage retropulsion after revision.

Methods: We observed 141 patients (61 men, 80 women; average age, 65.8 years) who had undergone PLIF and checked for the presence of L5/S interbody fusion. We investigated factors such as age, gender, the presence of diffuse idiopathic skeletal hyperostosis (DISH), fusion level, and grade 2 osteotomy, as well as pre-, post-, and post−preoperative L5/S disk height and angle, lumbar lordosis, Visual Analog Scale (VAS) score, Japanese Orthopaedic Association (JOA) score, and pelvic incidence (PI), comparing those with and without L5/S interbody fusion. In addition, we analyzed the patients classified into short-level (n=111) and multi-level fusion groups (n=30). Results: Overall, the L5/S interbody fusion rate was 70% (short-level, 78%; multi-level, 40%). Age and pre- and post−preoperative L5/S disk angle were significantly different in each fusion level group. DISH presence, grade 2 osteotomy, and postoperative VAS and JOA scores were significantly different in the short-level fusion group, whereas PI was significantly different in the multi-level fusion group. Conclusions Incomplete union after L5/S PLIF correlates with advanced age, many fusion levels, and a large value of preoperative and a small value of post−preoperative L5/S disk angles.

Methods: In this study, 63 patients (21 men and 42 women) who underwent surgical treatment for OVF were enrolled. Of these patients, 26 had DISH (D+) and 37 did not have DISH (D-). Patient demographic characteristics and surgical, clinical, and radiological findings were compared between those with and without DISH. The change in their ability to perform ADL after surgery was also evaluated. Results: Age, number of comorbidities, and 1-year mortality rate were significantly higher in the D+ group (p<0.05). Postoperative Visual Analog Scale (VAS) scores were significantly higher in patients with impaired (n=6, p=0.04) abilities to perform ADL, and improvements in VAS scores were significantly higher in patients with unchanged abilities to perform ADL (n=54, p=0.03) after surgery. The average postoperative VAS scores were 2.2 for the D+ group and 2.3 for the D- group, which were not significantly different. Conclusions The frequency of OVF with DISH was higher in elderly men with multiple comorbidities and contributed to a higher 1-year mortality rate than those in patients without DISH. However, preoperative and postoperative VAS scores and improvements in VAS scores were similar between those with and without DISH. Postoperative impaired ability to perform ADL was associated with old age, high postoperative VAS scores, and little improvements in VAS scores, which were limitedly influenced by DISH. Surgical treatment of OVF combined with DISH is effective and appropriate for elderly patients.

We present the case of a 72-year-old man with constrictive pericarditis due to tuberculous pericarditis, who was treated with the waffle procedure via left anterolateral thoracotomy. The preoperative catheterization study showed the dip-and-plateau pattern, and the echocardiographic study shown the thickened pericardium and dilatation impairment. The surgery was able to be performed without cardiopulmonary bypass. The thickened pericardium was abraded with a Harmonic Scalpel. The waffle procedure was effective in this patient. The postoperative course was good, with improvement of NYHA status and cardiac pressure study results. We suggest that this procedure is useful for the patients with constrictive pericarditis.