Background: A peripheral extracorporeal membrane oxygenator (p-ECMO) has been developed to support patients who are dying due to a serious cardiopulmonary condition. This analysis was planned to define the clinical situation in which the patient benefits most from a p-ECMO. Material and Methods: Between June 2007 and Aug 2009, a total of 41 adult patients used the p-ECMO. There were 23 males and 18 females (mean age $54.4{\pm}15.1$ years). All patients had very unstable vital signs with hypoxia and complex cardiac problems. We divided the patients into 4 groups. In the first group, a p-ECMO was used as a bridge to cardiac operation. In the second group, patients did not have the opportunity to undergo any cardiac procedures; nevertheless, they were treated with a p-ECMO. In the third group, patients mostly had difficulty in weaning from CPB (cardiopulmonary bypass) after cardiac operation. The fourth group suffered from many complications, such as pneumonia, bleeding, infections, and LV dysfunction with underlying cardiac problems. All cannulations were performed by the Seldinger technique or cutting down the femoral vessel. A long venous cannula of $DLP^{(R)}$ (Medtronic Inc, Minneapolis, MN) or $RMI^{(R)}$ (Edwards Lifesciences LLC, Irvine, CA) was used together with a 17~21 Fr arterial cannula and a 21 Fr venous cannula. As a bypass pump, a Capiox emergency bypass system ($EBS^{(R)}$; Terumo, Tokyo, Japan) was used. We attempted to maintain a flow rate of $2.4{\sim}3.0\;L/min/m^2$ and an activated clotting time (ACT) of around 180 seconds. Results: Nine patients survived by the use of the p-ECMO. Ten patients were weaned from a p-ECMO but they did not survive, and the remainder had no chance to be weaned from the p-ECMO. The best clinical situation to apply the p-ECMO was to use it as a bridge to cardiac operation and for weaning from CPB after cardiac operation. Conclusion: Various clinical results were derived by p-ECMO according to the clinical situation. For the best results, early adoption of the p-ECMO for anatomical correction appears important.
High energy photon beams from medical linear accelerators produce large scattered radiation by various components of the treatment head, collimator and walls or objects in the treatment room including the patient. These scattered radiation do not provide therapeutic dose and are considered a hazard from the radiation safety perspective. Scattered dose of therapeutic high energy radiation beams are contributed significant unwanted dose to the patient. ICRP take the position that a dose of 500mGy may cause abortion at any stage of pregnancy and that radiation detriment to the fetus includes risk of mental retardation with a possible threshold in the dose response relationship around 100 mGy for the gestational period. The ICRP principle of as low as reasonably achievable (ALARA) was recommended for protection of occupation upon the linear no-threshold dose response hypothesis for cancer induction. We suggest this ALARA principle be applied to the fetus and testicle in therapeutic treatment. Radiation dose outside a photon treatment filed is mostly due to scattered photons. This scattered dose is a function of the distance from the beam edge, treatment geometry, primary photon energy, and depth in the patient. The need for effective shielding of the fetus and testicle is reinforced when young patients ate treated with external beam radiation therapy and then shielding designed to reduce the scattered photon dose to normal organs have to considered. Irradiation was performed in phantom using high energy photon beams produced by a Varian 2100C/D medical linear accelerator (Varian Oncology Systems, Palo Alto, CA) located at the Yonsei Cancer Center. The composite phantom used was comprised of a commercially available anthropomorphic Rando phantom (Phantom Laboratory Inc., Salem, YN) and a rectangular solid polystyrene phantom of dimensions $30cm{\times}30cm{\times}20cm$. the anthropomorphic Rando phantom represents an average man made from tissue equivalent materials that is transected into transverse 36 slices of 2.5cm thickness. Photon dose was measured using a Capintec PR-06C ionization chamber with Capintec 192 electrometer (Capintec Inc., Ramsey, NJ), TLD( VICTOREEN 5000. LiF) and film dosimetry V-Omat, Kodak). In case of fetus, the dosimeter was placed at a depth of loom in this phantom at 100cm source to axis distance and located centrally 15cm from the inferior edge of the $30cm{\times}30cm^2$ x-ray beam irradiating the Rando phantom chest wall. A acryl bridge of size $40cm{\times}40cm^2$ and a clear space of about 20 cm was fabricated and placed on top of the rectangular polystyrene phantom representing the abdomen of the patient. The leaf pot for testicle shielding was made as various shape, sizes, thickness and supporting stand. The scattered photon with and without shielding were measured at the representative position of the fetus and testicle. Measurement of radiation scattered dose outside fields and critical organs, like fetus position and testicle region, from chest or pelvic irradiation by large fie]d of high energy radiation beam was performed using an ionization chamber and film dosimetry. The scattered doses outside field were measured 5 - 10% of maximum doses in fields and exponentially decrease from field margins. The scattered photon dose received the fetus and testicle from thorax field irradiation was measured about 1 mGy/Gy of photon treatment dose. Shielding construction to reduce this scattered dose was investigated using lead sheet and blocks. Lead pot shield for testicle reduced the scatter dose under 10 mGy when photon beam of 60 Gy was irradiated in abdomen region. The scattered photon dose is reduced when the lead shield was used while the no significant reduction of scattered photon dose was observed and 2-3 mm lead sheets refuted the skin dose under 80% and almost electron contamination. The results indicate that it was possible to improve shielding to reduce scattered photon for fetus and testicle when a young patients were treated with a high energy photon beam.
The purpose of this paper is to investigate the nutrients intake situation and the physical growth and development of junior high school girls in cheju island, the peculiar area in Korea, and to study every possible correlation ketween daily food intake and growth rate of them. Further, it made an attempt to research nutrition problems for them in this area and assist in their growth and development through proper nutritional marragement. The survey was conducted in seven sample schods selected randomly from all three districts -this is Bukcheju-gun, Namcheju-gun and cheju city-of cheju Island. Four hundred eighteen girls, aged thirteen years ald, in second year grade of junior high schools, were provided with prepared questionnaires. For six days, July $16{\sim}21$ in 1975, the respondents filled out the questionnaires. They were asked to keep record of what they ate each meat. Their mitrients intake were analyzed in accordance with their daily food intake records during a six day period. On the other side, including physical growth index calculated by means of weight and hight of the respondents, their school records were also investigated. Critical Ratio as well as percentage calculation were included for statistical analysis. The findings and results abtained are summarized as follows: (1) Living circumstance a) Average numbers of brother and sister in sampled pupils' family were five. b) Niety percent of the respondents were brought up by mother's milk at their infants and 45 percent of them were weaned at the age of 13 to 24 months. c) Fourty-six percent of them revealed irregulity in their meal time. d) The most favorite main dish was boiled rice mixed other cereals (34%), next bread (31%) and boiled noodle (26%), and kimchi was the most papular side dish (64%). (2) Nutrition survey a) The average calorie intake of a pupil per day was 1,783 cal. and the total calorie intake was composed of carbohydrate 73%, pratein 15%, fat 12% respectively. b) Carolie and nutrients were lower than the recommended level, except vitamins A,$B_1$ and Niacin, c) Average protein intake per day was 68g, which was relatively near to the recommended level, but in fact, most of them came from grain which is lacking in essential amino acids. The ratio of animal protein intake to tatal protein intake was 36%. d) Their average animal food intake was proportionated in 14% in their total food intake and the cereals consumed in the largest quantity at the level of 63% out of whole food groups. (3) The results of statistical analysis a) The correlation between the calorie intake and the physical growth index revealed statistical significancy at the level of P<.005. b) The correlation between the protein intake and the physical growth index revealed statistical significancy at the level of .01
A pot experiment with $P^{32}$ was carried out to investigate the soil phosphorus availability to four leguminous forage crops and three graminaceous, of black volcanic ash soil and red one. Soil phosphorus was extracted with 6 different extractants and also fractionated in Fe, Al and Ca phosphorus. The results were: 1) Soil phosphorus availability was in decreasing order of Italian rye grass${\gg}$ soybean> cassia> corn> weeping love grass${\gg}$ Korean lespedeza> Red clover and they might be grouped into three levels by A-value, over 1000, 200-500 and below 40 $p_{2}O_{5}\;kg/ha$. 2) The amount of various available phosphorus and phosoborus fraction in the black soil was higher than that in the red soil. No difference in phosphorus availabiliy to forage crops was shown between two soils. Therefore an extractant able to draw out similar amount of phosphorus from two soil will be suitable for determining the phosphorus availability index. 3) Two extractants, one extracting 20 ppm as maximum and the other extracting 100 ppm as minimum will be recommendable for determining the availability of phosphorus; the former for red clover and Lespedeza and the latter for others. Truog method may be good for the former but no appropriate method for the latter was found in the methods used. 4) T/R ratios of legumes were negatively correlated at 5% level with % phosphorus from fertilizer (% pdF). Legumes showed below 50 of % pdF over 5 of T/R ratio and over 80 of % pdF below 5 of T/R.
This study was carried out to investigate the effect of intracytoplasmic injection of $Ca^{2+}$ and human sperm extract on the parthenogenetic activation of mouse oocytes. The results obtained were as follows: 1. The mouse oocytes were injected with 10 pl of PBS medium containing 0, 1.7 and 5 mM calcium concentrations, respectively. Activation rate of the oocytes with formation of pronuc1ei and extrusion of the second polar bodies was 14.5, 9.8 and 14.9% at the above calcium concentrations, respectively. There were no significant differences in the activation rates among the calcium concentrations. 2. The mouse oocytes were injected with 10 pl of non-heated human sperm extract, and cultured for 12~15 h in the PBS media with the 0, 1.7 and 5 mM calcium concentrations, respectively. Activation rate(51.8%) of the oocytes at the 1.7 mM calcium concentration was significantly higher than those at the 0 and 5 mM calcium concentrations. 3. The mouse oocytes were injected with 10 pl of heated human sperm extract, and cultured for 12~15 h in the PBS media with the 0, 1. 7 and 5 mM calcium concentrations, respectively. No significant differences were found in the activation rates (11.8~17.0%) among the calcium concentrations. 4. The mouse oocytes were injected with 10 pl of PBS medium, non-heated sperm extract and heated sperm extract, and cultured for 12~15 h in the PBS media with 1.7 mM calcium concentrations, respectively. Activation rate (54.5%) of the oocytes injected with the non-heated sperm extract was highest. There were significant differences in the activation rates among the above injection materials (P<0.05). 5. The mouse oocytes were injected with 10 pl of 1 and 6 days old non-heated sperm extracts, and cultured for 12<15 h in the PBS media with 1.7 mM calcium concentrations, respectively. Activation rate(60.0%) of the oocytes injected with 1 days old sperm extract was significantly higher than that (11.1%) injected with 6 days old sperm extract. The results obtained in this study suggest that non-heated human sperm extract may contain sperm-associated oocyte-activating factor such as oscillin.
Background : Since the late 1960s, mechanical ventilation has been accomplished primarily using volume controlled ventilation(VCV). While VCV allows a set tidal volume to be guaranteed, VCV could bring about excessive airway pressures that may be lead to barotrauma in the patients with acute lung injury. With the increment of knowledge related to ventilator-induced lung injury, pressure controlled ventilation(PCV) has been frequently applied to these patients. But, PCV has a disadvantage of variable tidal volume delivery as pulmonary impedance changes. Since the concept of combining the positive attributes of VCV and PCV(dual control ventilation, DCV) was described firstly in 1992, a few DCV modes were introduced. Pressure-regulated volume control(PRVC) mode, a kind of DCV, is pressure-limited, time-cycled ventilation that uses tidal volume as a feedback control for continuously adjusting the pressure limit However, no clinical studies were published on the efficacy of PRVC until now. 'This investigation studied the efficacy of PRVC in the patients with unstable respiratory mechanics. Methods : The subjects were 8 mechanically ventilated patients(M : F=6 : 2, $56{\pm}26$ years) who showed unstable respiratory mechanics, which was defined by the coefficients of variation of peak inspiratory pressure for 15 minutes greater than 10% under VCV, or the coefficients of variation of tidal volume greater than 10% under PCV. The study was consisited of 3 modes application with VCV, PCV and PRVC for 15 minutes by random order. To obtain same tidal volume, inspiratory pressure setting was adjusted in PCV. Respiratory parameters were measured by pulmonary monitor(CP-100 pulmonary monitor, Bicore, Irvine, CA, USA). Results : 1) Mean tidal volumes($V_T$) in each mode were not different(VCV, $431{\pm}102ml$ ; PCV, $417{\pm}99ml$ ; PRVC, $414{\pm}97ml$) 2) The coefficient of variation(CV) of $V_T$ were $5.2{\pm}3.9%$ in VCV, $15.2{\pm}7.5%$ in PCV and $19.3{\pm}10.0%$ in PRVC. The CV of $V_T$ in PCV and PRVC were significantly greater than that in VCV(p<0.01). 3) Mean peak inspiratory pressure(PIP) in VCV($31.0{\pm}6.9cm$$H_2O$) was higher than PIP in PCV($26.0{\pm}6.5cm$$H_2O$) or PRVC($27.0{\pm}6.4cm$$H_2O$)(p<0.05). 4) The CV of PIP were $13.9{\pm}3.7%$ in VCV, $4.9{\pm}2.6%$ in PVC and $12.2{\pm}7.0%$ in PRVC. The CV of PIP in VCV and PRVC were greater than that in PCV(p<0.01). Conclusions : Because of wide fluctuations of VT and PIP, PRVC mode did not seem to have advantages compared to VCV or PCV in the patients with unstable respiratory mechanics.
A field experiment was conducted on a soil where habitual zinc deficiency has been observed, to investigate the effectiveness of two forms of zinc containing fertilizers: zinc enriched fused phosphate and zinc enriched compound fertilizer. The result of present study is summarized as following. 1. The sail used for the study contained relatively large amount of 1N $CH_2COONH_4$ extractable Ca and the pH was 7.03. Available Zn extracted by 0.1 HCl and available $SiO_2$ extracted by NaOAc were 3.35 ppm and 67.7 ppm respectively. 2. In control plots Zinc content of rice plant measured at 20 days after transplanting was 22-23 ppm, which was a little higher than the critical level (20ppm). But at harvesting stage it dropped to 15ppm. 3. The ratios of $P_2O_5/Zn$ and N/Zn tended to lower as the zinc applied to the soil increased. 4. Application of Zinc clearly increased the number of tillers and plant height as compared to the control. It was also observed that the plots received znic headed and matured earlier compared to the control plots by two weeks. 5. Application of zinc increased all of the yield components and the yield of rice. However, there were no statistical differences in yield and yield components among the forms and levels of zinc fertilizers.
This study was conducted to find the changes of growth, seed yield and several characteristics of sesame by leaf spray of boron as a solution which is likely to be lack in the soil. It is carried out at low land developed 5 years ago. The amount of 200l /l0a boron as boric acid is sprayed in each treatment at the 11 node stage of sesame in main stem. The spraying concentrations of boric acid are 0.0, 0.2 and 0.4% in each treatment of the level low plot and the ridge height 15cm plot. The result shows that leaf area is increased in proportion to the concentration of boric acid in each treatment of the level low and the ridge height 15cm, and the degree of increase of each node order is remarkable in lower leaves and is more remarkable in the treatment of level low plot. The effects of leaf spray of boric acid are not only the increase of leaf area but also dry weight, no. of capsule per plant, 1,000 grains weight of capsule setting under middle position. As a result, the amount of seed is increased in 53% in the treatment of level low. The change of major characteristics according to leaf spray of boric acid is generally great in the treatment of level low. Especially the increase of leaf area in the part of upper leaves and low leaves is effective to improve other characteristics.
Jang, Seung Hun;Kim, Cheal Hyeon;Koh, Won Jung;Yoo, Chul-Gyu;Kim, Young Whan;Han, Sung Koo;Shim, Young-Soo
Tuberculosis and Respiratory Diseases
/
v.43
no.6
/
pp.916-924
/
1996
Bacground : Percutaneous needle aspiration biopsy (PCNA) is one of the most frequently used diagnostic methcxJs for intrathoracic lesions. Previous studies have reponed wide range of diagnostic yield from 28 to 98%. However, diagnostic yield has been increased by accumulation of experience, improvement of needle and the image guiding systems. We analysed the results of PCNA performed for one year to evaluate the diagnostic yield, the rate and severity of complications and factors affecting the diagnostic yield. Method : 287 PCNAs undergone in 236 patients from January, 1994 to December, 1994 were analysed retrospectively. The intrathoracic lesions was targeted and aspirated with 21 - 23 G Chiba needle under fluoroscopic guiding system. Occasionally, 19 - 20 G Biopsy gun was used for core tissue specimen. The specimen was requested for microbiologic, cytologic and histopathologic examination in the case of obtained core tissue. Diagnostic yields and complication rate of benign and malignant lesions were ca1culaled based on patients' chans. The comparison for the diagnostic yields according to size and shape of the lesions was analysed with chi square test (p<0.05). Results : There are 19.9% of consolidative lesion and 80.1% of nodular or mass lesion, and the lesion is located at the right upper lobe in 26.3% of cases, the right middle lobe in 6.4%, the right lower lobe 21.2%, the left upper lobe in 16.8%, the left lower lobe in 10.6%, and mediastinum in 1.3%. The lesion distributed over 2 lobes is as many as 17.4% of cases. There are 74 patients with benign lesions, 142 patients with malignant lesions in final diagnosis and confirmative diagnosis was not made in 22 patients despite of all available diagnostic methods. 2 patients have lung cancer and pulmonary tuberculosis concomittantly. Experience with 236 patients showed that PCNA can diagnose benign lesions in 62.2% (42 patients) of patients with such lesions and malignant lesions in 82.4% (117 patients) of patients. For the patients in whom the first PCNA failed to make diagnosis, the procedure was repeated and the cumulative diagnostic yield was increased as 44.6%, 60.8%, 62.2% in benign lesions and as 73.4%, 81.7%, 82.4% in malignant lesions through serial PCNA. Thoracotomy was performed in 9 patients with benign lesions and in 43 patients with malignant lesions. PCNA and thoracotomy showed the same pathologic result in 44.4% (4 patients) of benign lesions and 58.1% (25 patients) of malignant lesions. Thoracotomy confirmed 4 patients with malignat lesions against benign result of PCNA and 2 patients with benign lesions against malignant result of PCNA. There are 1.0% (3 cases) of hemoptysis, 19.2% (55 cases) of blood tinged sputum, 12.5% (36 cases) of pneumothorax and 1.0% (3 cases) of fever through 287 times of PCNA. Hemoptysis and blood tinged sputum didn't need therapy. 8 cases of pneumothorax needed insertion of classical chest tube or pig-tail catheter. Fever subsided within 48 hours in all cases. There was no difference between size and shape of lesion with diagnostic yield. Conclusion: PCNA shows relatively high diagnostic yield and mild degree complications but the accuracy of histologic diagnosis has to be improved.
Kim, C.H.;Ra, C.S.;Goh, B.D.;Park, J.I.;Lin, G.Z.;Shin, J.S.
Journal of Animal Science and Technology
/
v.44
no.6
/
pp.783-792
/
2002
This experiment was conducted to investigate the effects of supplementary level of extruded poultry manure, corn and tapioca mixture (EPM) on growth performance, nutrient digestibility and body composition in korean native goats. Total 15 heads of Korean native goats (10 kg B.W.) were randomly assigned into five treatment groups (EPM 10, 20, 30, 40% and control.) and feeding trial was done for six weeks with ad libitum. Protein level of the extrudate with poultry manure was directly proportional to corn supplements rate. NFE and Ca content in EPM also were functional of the tapioca supplements levels. Daily body weight gain was significantly (p<0.05) reduced in EPM 40% group, but no significant differences were observed in other groups. Concentrate feed intake was high in EPM 10 to 30% groups, compared to the control. Feed conversion ratio also was relatively higher in EPM groups than in the control. As EPM level increased, dry matter digestibility was proportionally decreased, but that of crude protein was enhanced. Dressed carcass percentage was significantly (p<0.05) reduced with the increase of EPM level, showing control 49.7, EPM 10% 49.8, EPM 20% 48.3, EPM 30% 47.9 and EPM 40% 45.2, respectively.
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