1.BASAL METABOLIC RATE AND ITS DETERMINANTS IN POSTMENOPAUSAL WOMEN
CHIYOKO USUI ; JUN OKA ; JUN YAMAKAWA ; YUMI SASAKI ; MITSURU HIGUCHI
Japanese Journal of Physical Fitness and Sports Medicine 2003;52(2):189-198
The basal metabolic rate (BMR) of 70 postmenopausal women (age: 60.6±4.2 yrs., height: 154.9±5.2cm, body weight (BW) : 52.7±6.2kg; mean ±SD) was evaluated in relation to body composition (body fat mass (FM) : 17.3±3.9kg, lean body mass (LBM) : 35.3±3.6kg) . BMR was 1, 148±126kcal/day, 21.9±2.2kcal/kgBW/day, 32.7±3.2kcal kgLBM/day in all subjects. BMR (kcal/day) significantly correlated with BW (r=.635, p<0.001) and LBM (r=.598, p<0.001) . When divided into two groups, (lower %fat group (LF; <35%fat) and higher %fat group (HF; ≥35%fat) ), BW and FM were significantly higher in HF than in LF (BW: 56.6±6.4 vs 51.0±5.3 kg, FM: 21.7±2.8 vs 15.5±2.7 kg, p<0.001, respectively) . No difference was observed in LBM between the two groups (34.9±3.9 vs 35.5±3.5 kg) . BMR (kcal/kgBW/day) was lower in HF than in LF (21.0±1.8 vs 22.3±2.3, p<0.05), but HF group had higher BMR in terms of kcal/kgLBM/ day than LF (34.0±3.1 vs 32.1±3.1, p<0.05) . Multiple regression analysis was performed to predict BMR. A single predictor LBM and a pair of predictors LBM and FM explained 35.7% and 42.7% of the variance of BMR. This study suggested that a decrease in LBM is a major factor in affecting the reduction of BMR in postmenopausal women, whereas FM gained after menopause could be considered to have metabolic activity related to BMR.
2.Assessment of Left Ventricular Function by Doppler Echocardiography in Pediatric Cardiac Surgery.
Takahiro Kawai ; Yukio Wada ; Takeshi Enmoto ; Jun Ookawara ; Makoto Ono ; Shogo Toda ; Kazuhiro Kitaura ; Takahiro Oka
Japanese Journal of Cardiovascular Surgery 1996;25(4):245-251
Pre- and postoperative left ventricular (LV) function was assessed by Doppler echocardiography in 95 infants who underwent open heart surgery during the past two and half years. The patients were divided into three groups: 43 patients with ventricular septal defect (VSD group), 37 with atrial septal defect (ASD group) and 15 with the tetralogy of Fallot (TOF group). Echocardiography was performed before and at an early stage after surgery (average: 11.6 days) in all cases. The forward flow velocity pattern was evaluated by Doppler echocardiography, placing the sample volume at the pulmonary vein (PV) and the LV inflow portion. At the PV, the peak velocity of the S wave during systole (p-PVS) and the D wave during diastole (p-PVD) in patients with ASD were significantly lower (p<0.01) postoperatively. In patients with VSD, only p-PVD was significantly lower (p<0.05) postoperatively, showing a decrease of pulmonary blood flow. These results are thought to reflect a difference in the compliance of the left atrium between the two groups. At the LV inflow portion, the ratio of peak velocity of the wave during atrial systole to R wave on rapid inflow during diastole (A/R) was significantly lower in patients with VSD (p <0.01) postoperatively. At the same time, LV ejection fraction and fractional shortening were significantly lower (p<0.01), but these values remained within the normal range. These results suggest that LV can maintain a sufficient systolic performance against the decrease in preload and the increase in afterload as well as the improvement of diastolic function during the early period after surgery in the VSD group. In patients with ASD or TOF, there were no significant differences in parameters of LV function between preoperative and postoperative periods.
3.A Case of Chronic Contained Rupture of a Common Iliac Artery Aneurysm Induced by Trauma.
Keiko Miyazaki ; Kazuhiro Myojin ; Jun Matano ; Tatsuya Murakami ; Takashi Kunihara ; Junichi Oka
Japanese Journal of Cardiovascular Surgery 1997;26(1):59-61
We experienced a surgically treated case of chronic contained rupture of a common iliac artery aneurysm. A large number of cases of chronic contained ruptures of the abdominal aorta have been reported; however, that of the common iliac artery is very rare. A 66-year-old man was injured in a bicycle accident. Three months later, the patient felt a dull abdominal pain and noticed a tumor in the left lower abdomen. On presenting computed tomography (CT) scan revealed an aneurysm of the left common iliac artery. After further examinations, a contained rupture of the left common iliac artery aneurysm was diagnosed. At operation, the main aneurysm, 7.5×6.5cm in size, was seen in the left common iliac artery, extending to the right common iliac artery and the infrarenal abdominal aorta. A 5.0×3.0cm tear, was found oil the posterior wall of the left common iliac aneurysm, surrounded by a huge hematoma. The aneurysm was resected and the abdominal aorta and the common iliac arteries were replaced with a Bard Albumin-coated DeBakey vascular bifurcated graft (16×8mm). The postoperative course was uneventful.
4.Surgical Treatment of Ebstein Anomaly in Two Adult Cases: Limitations and Difficulties of Carpentier's Procedure.
Tomoji Yamakawa ; Toshihumi Murashita ; Jun-ichi Oka ; Takehiro Kubota ; Michiaki Imamura ; Norihiko Shiiya ; Keishu Yasuda
Japanese Journal of Cardiovascular Surgery 2002;31(6):414-417
In repair of the tricuspid valve (TV) due to Ebstein's anomaly, mobilization of the anterior leaflet associated with longitudinal right ventricle placation (Carpentier's procedure) has provided good results in both short- and long-term follow-up. However, if the anterior leaflet is small or severely deformed, such repair may be ineffective. We report two cases of Ebstein's anomaly (63 and 53 years old) with deformed anterior leaflets of the TV in whom Carpentier's procedure was not feasible. In one patient, the anterior leaflets were broadly plastered on the right ventricle and Carpentier's procedure was tried. However, the repair was converted to valve replacement because of significant residual regurgitation. The other patient had a cleft in the anterior leaflet, therefore Carpentier's procedure was not suitable. The repair restructured the valve mechanism below the true annulus by using the most mobile leaflets for valve closure (modified Hetzer's procedure). This method of repair could be an alternative method to repair of the TV in Ebstein's anomaly, particularly when the anterior leaflet is deformed.
6.Diagnosing metabolic acidosis in chronic kidney disease: importance of blood pH and serum anion gap
Jun-Ya KAIMORI ; Yusuke SAKAGUCHI ; Sachio KAJIMOTO ; Yuta ASAHINA ; Tatsufumi OKA ; Koki HATTORI ; Yohei DOI ; Yoshitaka ISAKA
Kidney Research and Clinical Practice 2022;41(3):288-297
Metabolic acidosis is one of the most common complications of chronic kidney disease (CKD). It is associated with the progression of CKD, and many other functional impairments. Until recently, only serum bicarbonate levels have been used to evaluate acid-base changes in patients with reduced kidney function. However, recent emerging evidence suggests that nephrologists should reevaluate the clinical approach for diagnosing metabolic acidosis in patients with CKD based on two perspectives; pH and anion gap. Biochemistry and physiology textbooks clearly indicate that blood pH is the most important acid-base parameter for cellular function. Therefore, it is important to determine if the prognostic impact of hypobicarbonatemia varies according to pH level. A recent cohort study of CKD patients showed that venous pH modified the association between a low bicarbonate level and the progression of CKD. Furthermore, acidosis with a high anion gap has recently been recognized as an important prognostic factor, because veverimer, a nonabsorbable hydrochloride-binding polymer, has been shown to improve kidney function and decrease the anion gap. Acidosis with high anion gap frequently develops in later stages of CKD. Therefore, the anion gap is a time-varying factor and renal function (estimated glomerular filtration rate) is a time-dependent confounder for the anion gap and renal outcomes. Recent analyses using marginal structural models showed that acidosis with a high anion gap was associated with a high risk of CKD. Based on these observations, reconsideration of the clinical approach to diagnosing and treating metabolic acidosis in CKD may be warranted.
7.Advancing Cardio-Oncology in Asia
Choon Ta NG ; Li Ling TAN ; Il Suk SOHN ; Hilda Gonzalez BONILLA ; Toru OKA ; Teerapat YINCHONCHAROEN ; Wei-Ting CHANG ; Jun Hua CHONG ; Maria Katrina Cruz TAN ; Rochelle Regina CRUZ ; Astri ASTUTI ; Vivek AGARWALA ; Van CHIEN ; Jong-Chan YOUN ; Jieli TONG ; Joerg HERRMANN
Korean Circulation Journal 2023;53(2):69-91
Cardio-oncology is an emerging multi-disciplinary field, which aims to reduce morbidity and mortality of cancer patients by preventing and managing cancer treatment-related cardiovascular toxicities. With the exponential growth in cancer and cardiovascular diseases in Asia, there is an emerging need for cardio-oncology awareness among physicians and country-specific cardio-oncology initiatives. In this state-of-the-art review, we sought to describe the burden of cancer and cardiovascular disease in Asia, a region with rich cultural and socio-economic diversity. From describing the uniqueness and challenges (such as socio-economic disparity, ethnical and racial diversity, and limited training opportunities) in establishing cardio-oncology in Asia, and outlining ways to overcome any barriers, this article aims to help advance the field of cardio-oncology in Asia.