1.Tuberculous Aortic Regurgitation. A Case Report with Successful Surgical Treatment.
Kenji Takahashi ; Satoshi Odagiri ; Koji Nagao
Japanese Journal of Cardiovascular Surgery 1996;25(3):189-191
Tuberculous valvular endocarditis is rare and diagnosis before death is seldom achieved. A case of severe aortic regurgitation due to tuberculous endocarditis in a 56-year-old man is presented. Replacement of the aortic valve in emergency and administration of anti-tuberculuos medication permitted an uneventful recovery. This is a rare case report of successful surgical treatment of tuberculous valvular disorder.
2.CABG Operation Using Arterial Grafts Only.
Kenji Takahashi ; Koji Nagao ; Atushi Narita ; Satoshi Iwabuchi
Japanese Journal of Cardiovascular Surgery 1994;23(3):161-166
In our department, we perform CABG operations using arterial grafts as much as possible, and in the present study, we investigated 96 patients who underwent CABG operations using arterial grafts alone during the 4-year period from October 1988 to August 1992. The sex ratio (M/F) was 64/32, and the mean age was 63.2 years. Of those 56 patients underwent bypass surgery for one artery each, using a total of 56 grafts. In 18 cases of bypass surgery for 2 arteries 34 grafts were used for 36 arteries, and in 16 patients who underwent surgery for 3 arteries, 42 grafts were used for 48 arteries. In 6 patients who underwent bypass surgery for 4 arteries, 16 grafts were used for 24 arteries. All 148 arteries harvested from 96 patients were available. Forty-one RITAs were used for 43 arteries, 68 LITAs for 72 arteries and 39 RGEAs for 49 arteries. There were 2 (2.0%) operative deaths. Among 135 grafts for 146 arteries on which arteriography was performed after operation, 133 grafts (98.6%) among 142 arteries (97.3%) were patent. In detail, the patency rate of ITA was 98 of 100 grafts (98.0%) and 102 of 105 arteries (97.1%), that of RGEA was 35 of 35 grafts (100%) and 40 of 41 arteries (97.6%), and therefore, good patency was observed in both ITA and RGEA.
3.A Case of Primary Cardiac Angiosarcoma.
Kenji TAKAHASHI ; Atushi NARITA ; Koji NAGAO ; Satoshi IWABUCHI ; Sohei SUZUKI ; Hisaaki KOIE
Japanese Journal of Cardiovascular Surgery 1993;22(6):493-496
Cardiac angiosarcoma is a rare disease which occurs most often in young males and has a remarkably unfavorable prognosis. We experienced one male case aged 46 who had an initial symptom of cardiac tamponade due to rupture of the right ventricle. Hemostasis was made under extracorporeal circulation, and the patient was discharged temporarily. However, a large volume of hemoptysis occurred from right B6 about 1 month after discharge, because of which resection of the right lower lobe was performed. Tumorous cells identical to those in the perforated cardiac region were detected in the resected tissue, and it was diagnosed histopathologically that the cardiac rupture was caused by angiosarcoma, resulting in pulmonary metastasis. Multiple pulmonary metastases were observed in bilateral lung following fields by CT, but administration of CDDP in iv×2 and in 150mg/day cyclophosphamide, the pulmonary metastases disappeared completely on CT on the 45th day. However, the metastases recurred soon thereafter without responding to chemotherapy, and the patient died 5 months after diagnosis of this disease because of exacerbated dyspnea.
4.Use of the Prognostic Nutritional Index to predict clinical outcomes of patients with terminal stage cancer
Yoichi Nakamura ; Jiro Nagao ; Yoshihisa Saida ; Manabu Watanabe ; Yasushi Okamoto ; Koji Asai ; Toshiyuki Enomoto ; Takaharu Kiribayashi ; Shinya Kusachi
Palliative Care Research 2013;8(2):199-202
Introduction: The importance of estimating the prognosis of advanced cancer patients is well known, but clinicians do not estimate survival time accurately. Since there is a need for an objective index to estimate survival time, the utility of the Prognostic Nutritional Index (PNI), which depends only on objective factors, was evaluated. Methods: The PNI was calculated using the following formula, PNI=10×serum albumin value (g/dL)+0.005×lymphocyte count in peripheral blood, at 3 months, 2 months, 1 month, 3 weeks, 2 weeks, 1 week, and within 3 days before death in 278 cancer patients (166 men, 112 women; age range, 33-99 years; mean age, 69.8 years) who died in a hospital surgical unit. Results: Sites of primary diseases included lung, breast, esophagus, stomach, colorectum, liver, biliary tract, and pancreas. The PNI values showed a gradual decrease over time. Changes in the PNI values were lower in non-gastrointestinal cancer patients than in gastrointestinal cancer patients. The mean PNI value was significantly higher in patients who lived >3 weeks (38.8) than in those who died within 3 weeks (32.4). When the PNI cut-off point was set at 35, and it was assumed that the life expectancy was within 3 weeks in cases with PNI <35, the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were 74.8%, 62.2%, 68.1%, and 69.6%, respectively. Discussion: The PNI appears to be a useful and simple parameter to predict clinical outcomes of patients with terminal stage cancer. Particularly, the PNI is considered feasible for gastrointestinal cancer patients.
5.Experimental Study on the Evaluation of the Right Ventricular Function Using a Modified Swan-Ganz Catheter.
Yuichi ONO ; Atsushi NARITA ; Koji NAGAO ; Kou TAKEUCHI ; Satoshi IWABUCHI ; Kuniaki SHUTO ; Kozo FUKUI ; Koichi KOYAMA ; Sohei SUZUKI ; HISAAKI KOIE
Japanese Journal of Cardiovascular Surgery 1992;21(2):126-132
We tried to evaluate the right ventricular function using a modified Swan-Ganz catheter with a rapid responsive thermistor. Twenty-four dogs comprised this series. Twelve were the model of left heart failure (Group A), and the other twelve were the model of right heart failure (Group B) produced by multiple ligation of coronary arteries. Dogs were studied for some of the circulatory indices before and after ligation with left atrial pressure at 10, 15 and 20mmHg in group A, and right atrial pressure at 10, 15 and 20mmHg in group B by volume loading. In group A, when the left atrial pressure was kept constant, right ventricular ejection fraction (RVEF) and right ventricular stroke work index (RVSWI) were decreased significantly after the ligation of coronary arteries. But there was no significant change in the peak right ventricular pressure-right ventricular endsystolic volume index ratio (peak RVP/RVESVI) associated with ligation. In group B, significant changes were observed in RVEF, RVSWI and peak RVP/RVESVI. Thus, it was found that right ventricular contractility in selective left heart failure was not reduced. Emax was considered to be a valuable index of ventricular contractility not affected by preload and afterload of ventricle, but this index is not easily measured clinically. The index peak RVP/RVESVI which is nearly equivalent to Emax, has an advantage in that it can be determined by the thermodilution method widely used in general. We conclude that this index is very useful to us for post-operative care in cardiac surgery.
6.Erectile Function and Sexual Activity Are Declining in the Younger Generation: Results from a National Survey in Japan
Akira TSUJIMURA ; Shinichiro FUKUHARA ; Koji CHIBA ; Tsuyoshi YOSHIZAWA ; Hikaru TOMOE ; Masato SHIRAI ; Kazunori KIMURA ; Eiji KIKUCHI ; Eri MAEDA ; Yoshikazu SATO ; Atsushi NAGAI ; Koichi NAGAO ; Haruaki SASAKI ;
The World Journal of Men's Health 2025;43(1):239-248
Purpose:
Twenty five years have passed since the first national survey on erectile dysfunction (ED) in Japan. The Japanese Society for Sexual Medicine conducted a nationwide survey on the actual status of sexual function targeting men over 20 years old in Japan using validated questionnaires commonly used in clinical practice.
Materials and Methods:
Japanese men aged 20 to 79 years participated in our online epidemiological study on sexual dysfunction. Erectile status was assessed by direct questioning and specific questionnaires. Risk factors and frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were assessed. The prevalence of these risk factors was compared between men with and without ED. Prevalence and frequencies were calculated for each 5-year age group. Main outcomes were the prevalence and number of patients with ED and simultaneous evaluation of age-related variations.
Results:
Direct questioning of the men revealed that 13.0% felt troubled by ED. Although 81.0% of them had at least some ED symptoms based on a Sexual Health Inventory For Men score of ≤21, the prevalence of men with ED by Erection Hardness Score (EHS), the most appropriate questionnaire for Japanese with low sexual activity, was 30.9%, indicating that 14,012,596 men have ED. Most risk factors were related with ED, whereas frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were affected by aging. However, the low frequency of these factors in the young generation was surprising.
Conclusions
The EHS-based assessment revealed a prevalence of ED of 30.9%, which affected approximately 14 million men, and that the sexual desire, erection stiffness, orgasms, and satisfaction were lower than expected in young Japanese men, especially those aged 20 to 24 years, although those factors tended to worsen with aging. We believe that these findings actually reveal the current sexual status of men in Japan.
7.Erectile Function and Sexual Activity Are Declining in the Younger Generation: Results from a National Survey in Japan
Akira TSUJIMURA ; Shinichiro FUKUHARA ; Koji CHIBA ; Tsuyoshi YOSHIZAWA ; Hikaru TOMOE ; Masato SHIRAI ; Kazunori KIMURA ; Eiji KIKUCHI ; Eri MAEDA ; Yoshikazu SATO ; Atsushi NAGAI ; Koichi NAGAO ; Haruaki SASAKI ;
The World Journal of Men's Health 2025;43(1):239-248
Purpose:
Twenty five years have passed since the first national survey on erectile dysfunction (ED) in Japan. The Japanese Society for Sexual Medicine conducted a nationwide survey on the actual status of sexual function targeting men over 20 years old in Japan using validated questionnaires commonly used in clinical practice.
Materials and Methods:
Japanese men aged 20 to 79 years participated in our online epidemiological study on sexual dysfunction. Erectile status was assessed by direct questioning and specific questionnaires. Risk factors and frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were assessed. The prevalence of these risk factors was compared between men with and without ED. Prevalence and frequencies were calculated for each 5-year age group. Main outcomes were the prevalence and number of patients with ED and simultaneous evaluation of age-related variations.
Results:
Direct questioning of the men revealed that 13.0% felt troubled by ED. Although 81.0% of them had at least some ED symptoms based on a Sexual Health Inventory For Men score of ≤21, the prevalence of men with ED by Erection Hardness Score (EHS), the most appropriate questionnaire for Japanese with low sexual activity, was 30.9%, indicating that 14,012,596 men have ED. Most risk factors were related with ED, whereas frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were affected by aging. However, the low frequency of these factors in the young generation was surprising.
Conclusions
The EHS-based assessment revealed a prevalence of ED of 30.9%, which affected approximately 14 million men, and that the sexual desire, erection stiffness, orgasms, and satisfaction were lower than expected in young Japanese men, especially those aged 20 to 24 years, although those factors tended to worsen with aging. We believe that these findings actually reveal the current sexual status of men in Japan.
8.Erectile Function and Sexual Activity Are Declining in the Younger Generation: Results from a National Survey in Japan
Akira TSUJIMURA ; Shinichiro FUKUHARA ; Koji CHIBA ; Tsuyoshi YOSHIZAWA ; Hikaru TOMOE ; Masato SHIRAI ; Kazunori KIMURA ; Eiji KIKUCHI ; Eri MAEDA ; Yoshikazu SATO ; Atsushi NAGAI ; Koichi NAGAO ; Haruaki SASAKI ;
The World Journal of Men's Health 2025;43(1):239-248
Purpose:
Twenty five years have passed since the first national survey on erectile dysfunction (ED) in Japan. The Japanese Society for Sexual Medicine conducted a nationwide survey on the actual status of sexual function targeting men over 20 years old in Japan using validated questionnaires commonly used in clinical practice.
Materials and Methods:
Japanese men aged 20 to 79 years participated in our online epidemiological study on sexual dysfunction. Erectile status was assessed by direct questioning and specific questionnaires. Risk factors and frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were assessed. The prevalence of these risk factors was compared between men with and without ED. Prevalence and frequencies were calculated for each 5-year age group. Main outcomes were the prevalence and number of patients with ED and simultaneous evaluation of age-related variations.
Results:
Direct questioning of the men revealed that 13.0% felt troubled by ED. Although 81.0% of them had at least some ED symptoms based on a Sexual Health Inventory For Men score of ≤21, the prevalence of men with ED by Erection Hardness Score (EHS), the most appropriate questionnaire for Japanese with low sexual activity, was 30.9%, indicating that 14,012,596 men have ED. Most risk factors were related with ED, whereas frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were affected by aging. However, the low frequency of these factors in the young generation was surprising.
Conclusions
The EHS-based assessment revealed a prevalence of ED of 30.9%, which affected approximately 14 million men, and that the sexual desire, erection stiffness, orgasms, and satisfaction were lower than expected in young Japanese men, especially those aged 20 to 24 years, although those factors tended to worsen with aging. We believe that these findings actually reveal the current sexual status of men in Japan.
9.Erectile Function and Sexual Activity Are Declining in the Younger Generation: Results from a National Survey in Japan
Akira TSUJIMURA ; Shinichiro FUKUHARA ; Koji CHIBA ; Tsuyoshi YOSHIZAWA ; Hikaru TOMOE ; Masato SHIRAI ; Kazunori KIMURA ; Eiji KIKUCHI ; Eri MAEDA ; Yoshikazu SATO ; Atsushi NAGAI ; Koichi NAGAO ; Haruaki SASAKI ;
The World Journal of Men's Health 2025;43(1):239-248
Purpose:
Twenty five years have passed since the first national survey on erectile dysfunction (ED) in Japan. The Japanese Society for Sexual Medicine conducted a nationwide survey on the actual status of sexual function targeting men over 20 years old in Japan using validated questionnaires commonly used in clinical practice.
Materials and Methods:
Japanese men aged 20 to 79 years participated in our online epidemiological study on sexual dysfunction. Erectile status was assessed by direct questioning and specific questionnaires. Risk factors and frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were assessed. The prevalence of these risk factors was compared between men with and without ED. Prevalence and frequencies were calculated for each 5-year age group. Main outcomes were the prevalence and number of patients with ED and simultaneous evaluation of age-related variations.
Results:
Direct questioning of the men revealed that 13.0% felt troubled by ED. Although 81.0% of them had at least some ED symptoms based on a Sexual Health Inventory For Men score of ≤21, the prevalence of men with ED by Erection Hardness Score (EHS), the most appropriate questionnaire for Japanese with low sexual activity, was 30.9%, indicating that 14,012,596 men have ED. Most risk factors were related with ED, whereas frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were affected by aging. However, the low frequency of these factors in the young generation was surprising.
Conclusions
The EHS-based assessment revealed a prevalence of ED of 30.9%, which affected approximately 14 million men, and that the sexual desire, erection stiffness, orgasms, and satisfaction were lower than expected in young Japanese men, especially those aged 20 to 24 years, although those factors tended to worsen with aging. We believe that these findings actually reveal the current sexual status of men in Japan.
10.Erectile Function and Sexual Activity Are Declining in the Younger Generation: Results from a National Survey in Japan
Akira TSUJIMURA ; Shinichiro FUKUHARA ; Koji CHIBA ; Tsuyoshi YOSHIZAWA ; Hikaru TOMOE ; Masato SHIRAI ; Kazunori KIMURA ; Eiji KIKUCHI ; Eri MAEDA ; Yoshikazu SATO ; Atsushi NAGAI ; Koichi NAGAO ; Haruaki SASAKI ;
The World Journal of Men's Health 2025;43(1):239-248
Purpose:
Twenty five years have passed since the first national survey on erectile dysfunction (ED) in Japan. The Japanese Society for Sexual Medicine conducted a nationwide survey on the actual status of sexual function targeting men over 20 years old in Japan using validated questionnaires commonly used in clinical practice.
Materials and Methods:
Japanese men aged 20 to 79 years participated in our online epidemiological study on sexual dysfunction. Erectile status was assessed by direct questioning and specific questionnaires. Risk factors and frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were assessed. The prevalence of these risk factors was compared between men with and without ED. Prevalence and frequencies were calculated for each 5-year age group. Main outcomes were the prevalence and number of patients with ED and simultaneous evaluation of age-related variations.
Results:
Direct questioning of the men revealed that 13.0% felt troubled by ED. Although 81.0% of them had at least some ED symptoms based on a Sexual Health Inventory For Men score of ≤21, the prevalence of men with ED by Erection Hardness Score (EHS), the most appropriate questionnaire for Japanese with low sexual activity, was 30.9%, indicating that 14,012,596 men have ED. Most risk factors were related with ED, whereas frequencies of sexual intercourse, masturbation, nocturnal erections, and feeling sexual desire were affected by aging. However, the low frequency of these factors in the young generation was surprising.
Conclusions
The EHS-based assessment revealed a prevalence of ED of 30.9%, which affected approximately 14 million men, and that the sexual desire, erection stiffness, orgasms, and satisfaction were lower than expected in young Japanese men, especially those aged 20 to 24 years, although those factors tended to worsen with aging. We believe that these findings actually reveal the current sexual status of men in Japan.