The multistage maximal exercise test was performed to 135 cases with various heart disease and 207 control group between jan. 1980 and Dec. 1980 in KoreaGeneral Hospital. The change of heart rate, blood pressure and ST segment in various heart disease were compared with those in control group. The results were followings; 1. There were 130 male and 77 female of cases with control group, whose mean age were 50 years old. 2. General check up was the most common underlying disease of control group(67 patients) and the others were gastritis (28), neurosis (24), diabets mellitus (17), hepatitis (4) and peptic ulcer (4) frequency. 3. Change of heart rate, blood pressure and ST segment in control group during GXT were 89~154, 119/80~157/88 mmHg and 0.6~2 mm. 4. There were 81 male and 51 female of cases with various heart disease group, whose mean age were 50 years old. 5. Atherosclerotic heart disease was the most common underlying disease of various heart disease group (49 patients) and the others were hypertension (34), hypertensive cardiovascular disease (22), labile hypertension (14), angina (7), arrythmia (6) and others (3) in frequency. 6. Change of heart rate, blood pressure and ST segment in various heart disease group during GXT were 85~148, 140/93~178/102 mmHg and -0.7~1.3mm. ST segment in atherosclerotic heart disease, hypertension, hypertensive cardiovascular disease, valvular heart disease and myocardial infarction were significantly depressed(p<0.05) compared with ST segment in control group.
Arrhythmias, Cardiac ; Blood Pressure ; Cardiovascular Diseases ; Exercise Test* ; Female ; Gastritis ; Heart Diseases* ; Heart Rate ; Heart Valve Diseases ; Heart* ; Hepatitis ; Humans ; Hypertension ; Male ; Middle Aged ; Myocardial Infarction ; Peptic Ulcer

Cardiovascular complications are major sources of morbidity and mortality in hypertensive patients. To assess the prevalence of anatomical and functional abnormalities of the heart in such patients, we studied total 67 sujects with systemic hypertension and hypertensive cardiovascular disease by echocardiography. Accordingly normal values of echocardiography from 27 control subjects, we found each significant change(p<0.05). of the septal thickness, left ventricular mass, mitral valve E-F slope and aortic dimension on the both groups, but functional measurements did only show significant change on the hypertensive cardiovascular group in contrast to hypertensive subjects group. The prevalence of the echocardiographic abnormalities on the simple hypertensive subjects group who have no abnormal 12-lead E.C.G. or Chest X-rays are orderly 14 subjects(64%) on the aortic root dimension, 9 subjects (41%) on the left ventricular posterior free-wall thickness and 7 subjects(32%) on the septal thickness. These findings demonstrated a high prevalence of cardiac abnormalities in a population of asymptomatic hypertensive subjects. And these abnormalities can be detected well by echocardiography before they were otherwise apparent.
Cardiovascular Diseases ; Echocardiography* ; Heart ; Humans ; Hypertension ; Mitral Valve ; Mortality ; Prevalence ; Reference Values ; Thorax

PURPOSE:We investigated the production of oxygen hydroxyl radicals in the striatum of neonatal rat brain after intrastriatal injection of dopamine (DA) and the effect of growth hormone (GH) on the apoptosis of striatal neurons injured by hypoxia-ischemia. METHODS:The extracellular striatal levels of 2,3-dihydroxybenzoic acid (DHBA) and 2,5-DHBA as indicators of hydroxyl radical(OH-) production were measured by in vivo microdialysis in the striatums of 7 day-old newborn rats (n=10) after direct intrastriatal infusion of dopamine hydrochloride (1.0 micromol/microL). The samples of perfused artificial cerebrospinal fluid (CSF) were collected every 10 minutes interval. The levels of DA, 2,3-DHBA and 2,5-DHBA of CSF were analysed by HPLC (high performance liquid chromatography). Also, the brains were removed at 24 hour after hypoxic-ischemic injury by Rice-Vannucci method. The coronal sections (12 micrometer) of paraffin-fixed brains were stained by TUNEL (terminal transferase-mediated dUTP nick-end-labelling) technique, and the neuronal cells undergoing apoptosis in the striatum were observed by fluorescent microscopy and compared between GH-treated (50 mg/kg, Dong-Ah Pharmacy Co.) and saline-treated rats. RESULTS:The extracellualr striatal levels of 2,3-DHBA and 2,5-DHBA increased abruptly in the first 10 minutes samples after intrastriatal injection of DA. After then, the levels declined slowely. The levels of striatal extracelluar 2.3-DHBA increased up to 621.8+/-508.7% of basal levels (P<0.05), and the levels of 2.5-DHBA increased up to 262.8+/-198.1% of basal levels (P<0.05). GH reduced markedly the number of apoptotic neuronal cells in the striatum after hypoxic-ischemic brain injury. CONCLUSION: The level of hydroxyl radicals increased abruptly after intrastriatal injection of DA and GH reduced markedly the number of apoptotic neuronal cells in the striatum after hypoxic-ischemic brain injury.
Animals ; Apoptosis* ; Brain Injuries ; Brain* ; Cerebrospinal Fluid ; Chromatography, High Pressure Liquid ; Dopamine* ; Growth Hormone* ; Humans ; Hydroxyl Radical* ; In Situ Nick-End Labeling ; Infant, Newborn* ; Microdialysis ; Microscopy ; Neurons* ; Oxygen ; Pharmacy ; Rats*

PURPOSE: Renal colic is a common disorder with a high rate of recurrence, resulting in a large number of emergency department visits. The aim of this study was to investigate the seasonal variation in renal colic attacks and the association with climatic parameters. METHODS: The time of onset, monthly incidence, and effects of climatic parameters of renal colic were evaluated. Data on climatic parameters were obtained from the Korea Meteorological Administration. Correlation between the number of monthly episodes and climatic parameters was assessed using Pearson's correlation coefficient. RESULTS: A total of 5060 renal colic episodes were retrieved during a period of 84 months (from May 2006 to April 2013). Episodes of renal colic were more common in men (67.4%) than in women(32.6%). The incidence of renal colic showed a circadian variation, with a morning peak (500~1000 h) and an afternoon dip (1500~1900 h). Findings of the current study showed a higher number of renal colic episodes during summer compared with other seasons. Significant positive correlations were observed between the mean monthly temperature and the monthly incidence of renal colic, but not between other climatic parameters (relative humidity, rainfall, sunshine hours, and atmospheric pressure) and incidence of renal colic. CONCLUSION: We conclude that the incidence of renal colic has significant seasonal variation, and only mean monthly temperature showed any consistent association with monthly attack rates.
Climate ; Emergency Service, Hospital* ; Humans ; Humidity ; Incidence ; Korea ; Male ; Recurrence ; Renal Colic* ; Seasons* ; Sunlight ; Urolithiasis

PURPOSE: We intended to evaluate the effect of hypoxia-ischemia on extracellular striatal monoamine metabolism in neonatal rat brains by in vivo microdialysis. METHODS: The right common carotid arteries of five or six-day old rats were surgically ligated, and the probes for microdialysis were inserted into the right striatum with stereotaxic instrument. After stabilization for two hours, artificial cerebrospinal fluid was infused via the probe for microdialysis and samples were collected during hypoxia-ischemia and recovery periods at 20 minute intervals. The concentrations of DA(dopamine), DOPAC(3,4-di-hydroxyphenyl acetic acid), HVA(homovanillic acid), NE(norepinephrine), and 5-HIAA(5-hydroxy indoleacetic acid) were measured by HPLC(high performance liquid chromatography) and the changes were analysed. RESULTS: The striatal levels of dopamine metabolites such as DOPAC and HVA, were significantly decreased during hypoxia-ischemia, and increased to their basal level during reoxygenation(P<0.05). Dopamine mostly increased during hypoxia but statistically not significant(P>0.05). DOPAC showed the most remarkable decrease(23.0+/-4.2%, P<0.05), during hypoxia-ischemia and increase to the basal levels during reoxygenation(120.8+/-54.9%, P<0.05), and HVA showed the same pattern of changes as those of DOPAC during hypoxia-ischemia(35.3+/-7.6% of basal level, P<0.05) and reoxygenation (105.8+/-32.3%). However, the level of NE did not show significant changes during hypoxia-ischemia and reoxygenation. The levels of 5-HIAA decreased(74.9+/-3.1%) and increased(118.1+/-7.8%) during hypoxia-ischemia and reoxygenation, respectively(P<0.005). CONCLUSION: Hypoxia-ischemia had a significant influence on the metabolism of striatal monoamine in neonatal rat brains. These findings suggest that monoamine, especially dopamine, and its metabolites could have a significant role in the pathogenesis of hypoxic-ischemic injury of neonatal rat brains.
3,4-Dihydroxyphenylacetic Acid ; Animals ; Anoxia ; Brain* ; Carotid Artery, Common ; Cerebrospinal Fluid ; Dopamine ; Humans ; Hydroxyindoleacetic Acid ; Infant, Newborn ; Metabolism* ; Microdialysis ; Rats*

Holt-Oram Syndrome is an autosomal dominant disorder characterized by the association of upper-limb abnormalities and congenital heart disease. A woman with no family history of genetic disease underwent antenatal sonography at 27 weeks' menstrual age to screen for fetal anomalies. Ultrasonography revealed abnormalities in the upper limbs. The limb abnormalities included abscence of bilateral thumbs and radius: the left humus was short. Pregnancy termination was performed. The postnatal chromosomal analysis revealed a normal 46XX karyotype and the autopsy finding confirmed the Holt-Oram syndrome. We report a case of Holt-Oram Syndrome in fetus with unaffected parents with brief of the literatures.
Autopsy ; Extremities ; Female ; Fetus ; Heart Defects, Congenital ; Humans ; Karyotype ; Parents* ; Pregnancy ; Radius ; Soil ; Thumb ; Ultrasonography* ; Upper Extremity

PURPOSE: IBTR! 2.0 nomogram is web-based nomogram that predicts ipsilateral breast tumor recurrence (IBTR). We aimed to validate the IBTR! 2.0 using an external data set. MATERIALS AND METHODS: The cohort consisted of 2,206 patients, who received breast conserving surgery and radiation therapy from 1992 to 2012 at our institution, where wide surgical excision is been routinely performed. Discrimination and calibration were used for assessing model performance. Patients with predicted 10-year IBTR risk based on an IBTR! 2.0 nomogram score of <3%, 3%–5%, 5%–10%, and >10% were assigned to groups 1, 2, 3, and 4, respectively. We also plotted calibration values to observe the actual IBTR rate against the nomogram-derived 10-year IBTR probabilities. RESULTS: The median follow-up period was 73 months (range, 6 to 277 months). The area under the receiver operating characteristic curve was 0.607, showing poor accordance between the estimated and observed recurrence rate. Calibration plot confirmed that the IBTR! 2.0 nomogram predicted the 10-year IBTR risk higher than the observed IBTR rates in all groups. High discrepancies between nomogram IBTR predictions and observed IBTR rates were observed in overall risk groups. Compared with the original development dataset, our patients had fewer high grade tumors, less margin positivity, and less lymphovascular invasion, and more use of modern systemic therapies. CONCLUSIONS: IBTR! 2.0 nomogram seems to have the moderate discriminative ability with a tendency to over-estimating risk rate. Continued efforts are needed to ensure external applicability of published nomograms by validating the program using an external patient population.
Breast Neoplasms ; Breast ; Calibration ; Cohort Studies ; Dataset ; Discrimination (Psychology) ; Follow-Up Studies ; Humans ; Mastectomy, Segmental ; Nomograms ; Radiotherapy ; Recurrence ; ROC Curve

BACKGROUND: The sagittal alignment of the spine and pelvis is not only closely related to the overall posture of the body but also to the evaluation and treatment of spine disease. In the last few years, the EOS imaging system, a new low-dose radiation X-ray device, became available for sagittal alignment assessment. However, there has been little research on the reliability of EOS. The purpose of this study was to evaluate the intrarater and interrater reliability of EOS for the sagittal alignment assessment of the spine and pelvis. METHODS: Records of 46 patients were selected from the EOS recording system between November 2016 and April 2017. The exclusion criteria were congenital spinal anomaly and deformity, and previous history of spine and pelvis operation. Sagittal parameters of the spine and pelvis were measured by three examiners three times each using both manual and EOS methods. Means comparison t-test, Pearson bivariate correlation analysis, and reliability analysis by intraclass correlation coefficients (ICCs) for intrarater and interrater reliability were performed using R package “irr.” RESULTS: We found excellent intrarater and interrater reliability of EOS measurements. For intrarater reliability, the ICC ranged from 0.898 to 0.982. For interrater reliability, the ICC ranged from 0.794 to 0.837. We used a paired t-test to compare the values measured by manual and EOS methods: there was no statistically significant difference between the two methods. Correlation analysis also showed a statistically significant positive correlation. CONCLUSIONS: EOS showed excellent reliability for assessment of the sagittal alignment of the spine and pelvis.
Congenital Abnormalities ; Humans ; Pelvis ; Postural Balance ; Posture ; Reproducibility of Results ; Spine ; Whole Body Imaging

OBJECTIVES: In our institutional experience, involved-field radiation therapy (IFRT) yields favorable outcomes in patients with recurrent epithelial ovarian cancer (EOC). This retrospective study aimed to investigate the clinical benefits of IFRT in this patient population. METHODS: Among patients treated with IFRT for recurrent EOC between 2010 and 2017, 61 patients with 90 treatments were included. IFRT encompassed all treatable lesions identified via imaging studies with 10–15-mm margins. Prescribed doses were ≥45 Gy (equivalent dose in 2 Gy/fraction). RESULTS: Patients were followed up for a median of 19.0 (Interquartile range, 8.6–34.9) months after IFRT. The 2-year in-field control, progression-free survival, and overall survival (OS) rates were 42.7%, 24.2%, and 78.9%, respectively. Fifty-three IFRT sessions (58.9%) were followed by systemic chemotherapy, and the median chemotherapy-free interval (CFI) was 10.5 (95% confidence interval=7.3–13.7) months. A higher carbohydrate antigen-125 (CA-125) level correlated with a worse 2-year OS (69.2% vs. 91.0%; p=0.001) and shorter median CFI (4.7 vs. 11.9 months; p<0.001). Twenty-eight (31.1%) of 90 treatments yielded a long-term CFI >12 months. For patients with a normal CA-125 level and/or platinum-sensitive tumor, IFRT prolonged CFI regardless of pre-existing carcinomatosis, gross tumor volume, and number of treatment sites. CONCLUSION: Our early experience demonstrates the safety and feasibility of IFRT as an effective salvage therapy and enables a “chemotherapy holiday” in selected recurrent EOC settings. The CA-125 value before IFRT (within normal range) and/or platinum sensitivity could be used as selection criteria for IFRT.
CA-125 Antigen ; Carcinoma ; Disease-Free Survival ; Drug Therapy ; Humans ; Ovarian Neoplasms ; Patient Selection ; Platinum ; Retrospective Studies ; Salvage Therapy ; Tumor Burden

Objective: Machine learning is emerging as a new alternative in various scientific fields and is potentially a new method of interpretation. Using the Light Gradient Boosting Machine (LightGBM), we analyzed the factors that influence the rechoice of emergency medicine responders. The survey is a cross-sectional study which provides an accurate understanding of a responder's current status. However, the results may vary depending on the composition, format, and question, and the relationship between the answers may be unclear. Methods: This study evaluated the modified 2020 Korean Emergency Physician Survey raw data. We applied the preferred model for random relationship check, random forest, support vector machine, and LightGBM models. The stacking ensemble model was used for the final decision process. Results: ‘It is fun working in an emergency room’was the most selected response factor for re-choice, followed by ‘interesting major’. The physical burden of age and lack of identity had a negative impact, whereas burnout and emotional stress factors had a lesser effect. Anxiety caused by the coronavirus disease 2019 (COVID-19) is thought to have a significant impact on this decision making. Conclusion Establishing the identity of emergency medicine and being faithful to its fundamental mission is a way to increase the rate of re-choice. Decreasing the burden of workload modified according to age is recommended to establish career longevity. The method of machine learning presents us with a new possibility of checking the relevance of survey results quickly and easily.