In an attempt to observe the to long-term training effects, the exercise of rope-skipping was regularly loaded to nine soldiers for nine weeks. And some physical characteristics, cardiopulinonary functions. some blood constituents were measured before, during and after the load of test exercise. treadmill running, and were compared with the pre-trained values. The results obtained were as follows: 1) Body weight, body surface area, skinfold thickness and total body fat decreased sifnificantly after the training. 2) The post-trained values of MVV and $FEF_{25%}$, increased significantly. 3) By the training, heart rates decreased very significantly in the resting, exercising and recovery periods. 4) After the training, the systolic blood pressures of the resting and recovery periods decreased meaningfully, while diastolic blood pressures increased significantly through the recovery stages. 5) In spite of the training, the respiration rates never change in both the resting and the recovery periods. 6) After the training, total cholesterol concentration of the venous blood decreased significantly in the resting the early recovery phases while the blood levels of glucose and HDL-cholesterol decreased very slightly. 7) Blood lactate concentration decreased through the recovery periods and the value of the recovery 20 and 60 minutes decreased obviously, in comparison with the pre-trained values. The above results suggest that the 9 week-training of the rope-skipping brings about the decrease of the body fat contents, the enhancement of cardiopulmonary functions and some changes in the blood constituents.
In off-pump coronary artery bypass grafting (CABG), multiple proximal anastomosis may increase the risk of cerebral embolism (air, debris) and aortic injury (dissection, pseudoaneurysm). Radial artery (RA) has no intraluminal valve such as saphenous vein. We applied Cabrol technique using aortic root replacement for proximal anastomosis in off-pump CABG. Cabrol technique using RA graft can reduce numbers of proximal anastomosis and reduce number of aortic manipulation in off-pump CABG. We report a Cabrol technique for proximal anastomosis in off-pump CABG with RA graft.
Total body water is increased after cardiopulmonary bypass resulting in tissue edema and organ dysfunction. Ultrafiltration has been used to reduce this accumulation of water. We have carried out a prospective randomized study in 17 children undergoing open heart surgery, comparing modified ultrafiltration(MUF) with nonfiltered controls. MUF was carried out for about 10 minutes after completion of cardiopulmonary bypass to a hematocrit 36∼42%. Blood loss, blood transfused, hemodynamics, and laboratory data were recorded for 24 hours postoperatively. The results were analyzed using Mann-Whitney U test, comparing controls(n=7) to ultrafiltered(n=10). There was no death in each group. The mean filtrate volume(ml/kg) was 42(30∼68). Blood loss(ml/kg/24hr) was 14.5 mean(4.0∼26.6) in controls versus 12.1 mean(6.0∼21.5) in MUF(P>0.05) ; blood transfused(ml/kg/24hr) was 9.4 mean (6.0∼36.3) in controls versus 3.4 mean(0∼11.4) in MUF(P<0.05). There was rise in arterial blood pressure during MUF. Percent rise of systolic blood pressure was 4.2(0∼11.7) in controls versus 19.8(7.0∼36.9) in MUF(P=0.001). Percent rise of diastolic blood pressure was 10.0(1.6∼20.8) in controls versus 30.6(5.8∼73.3) in MUF(P<0.05). Platelet count, fibrinogen, and oncotic pressure rose after MUF. No complications directly attributable to the ultrafiltration were observed. Conclusively, MUF is safe, effective means of removing body water and beneficial to hemodynamics.
Background : This study aimed to evaluate the usefulness of preoperative placement of intraaortic balloon pump(IABP) in reducing operative risk and facilitating posterior vessel OPCAB in high risk patients with left main disease( 75% stenosis), intractable resting angina, postinfarction angina, or left ventricular dysfunction(ejection fraction 35%). Material and Method : One hundred eighty- nine consecutive patients who underwent multi-vessel OPCAB including posterior vessel revascularization were studied. The patients were divided into group I(n=74) that received preoperative or intraoperative IABP and group II(n=115) that did not receive IABP. In group I, there were 39 patients with left main disease, 40 patients with intractable resting angina, 14 patients with left ventricular dysfunction and 7 patients with postinfarction angina. Ten patients received intraoperative IABP support due to hemodynamic instability during OPCAB. Result : There was one operative mortality in group I and two mortalities in group II. The average number of distal anastomoses was not different between group I and group II(3.5$\pm$0.9 vs 3.4$\pm$0.9, p=ns). There were no significant differences in the number of posterior vessel anastomosis per patient between the two groups. There were no differences in ventilator support time, length of hospital stay, and morbidity between the two groups. There was one case of IABP-related complication in group I. Conclusion : IABP facilitates posterior vessel OPCAB in high risk patients, with comparable surgical results to low risk patients
Kim, Jae Min;Baek, Sun Kyung;Kim, Si-Young;Maeng, Chi Hoon;Han, Jae Joon;Park, Soyoung;Park, Jae Hun
Journal of Hospice and Palliative Care
/
v.18
no.4
/
pp.322-328
/
2015
Purpose: The aging of society has rapidly progressed, especially in Korea. Therefore, the necessity of research on end-of-life (EOL) care in elderly patients has increased. However, there are few studies on EOL care intensity for non-cancer patients. This study was designed to compare the EOL care intensity between cancer and non-cancer patients. Methods: We retrospectively analyzed the EOL care intensity based on medical records of decedents of Kyung Hee University Medical Center, a tertiary referral hospital from December 2014 through March 2015. And we compared EOL care intensity between cancer patients and non-cancer patients using statistical analysis of the frequency of invasive procedures and logistic regression analysis for factors that affect the EOL care intensity. Results: Statistical analysis showed invasive procedures, such as intensive care unit admission, endotracheal intubation followed by mechanical ventilation and emergency dialysis, were performed more frequently in non-cancer patients than cancer patients (29.3% vs. 72.4%, P<0.001). And age (P=0.038) and morbidity of cancer (P<0.001) influenced the invasive procedural decision when analyzed by logistic regression analysis. Conclusion: The EOL care was more intensive in non-cancer patients, and age and morbidity of cancer were major factors for the treatment intensity.
Kim, Won-Gon;Lim, Cheong;Moon, Hyun-Jong;Won, Tae-Hee;Kim, Yong-Jin
Journal of Chest Surgery
/
v.31
no.6
/
pp.553-559
/
1998
Introduction: The most dramatic application of hypothermia in cardiac surgery is in deep hypothermic circulatory arrest(DHCA). Because man in natural circumstances is never exposed to this extreme hypothermic condition, one of the controversial aspects of clinical hypothermia is appropriate acid-base management($\alpha$-stat versus pH-stat). This study aims to compare $\alpha$-stat with pH-stat for: (1) brain cooling and re-warming speed during hypothermia induction and re-warming by cardiopulmonary bypass (CPB); (2) cerebral perfusion, metabolism, and their coupling; and (3) the extent of development of cerebral edema after circulatory arrest, in young pigs. Materials & Methods: Fourteen young pigs were assigned to one of two strategies of gas manipulation. Cerebral blood flow was measured with a cerebral venous outflow technique. After a median sternotomy, CPB was established. Core cooling was initiated and continued until nasopHaryngeal temperature fell below $20^{\circ}C$. The flow rate was set at 2,500 ml/min. Once their temperatures were below $20^{\circ}C$, the animals were subjected to DHCA for 40 mins. During cooling, acid-base balance was maintained according to either $\alpha$-STAT or pH-STAT strategies. After DHCA, the body was re-warmed to normal body temperature. The animals were then sacrificed, and their brains measured for edema. Cerebral perfusion and metabolism were measured before the onset of CPB, before cooling, before DHCA, 15 mins after re-warming, and upon completion of re-warming. Results & Conclusion: Cooling time was significantly shorter with $\alpha$-stat than with pH-stat strategy, while there were no significant differences in rewarming time between the two groups. Nosignificant differences were found in cerebral blood flow, metabolic rate, or flow/ metabolic rate ratio between two groups. Temperature-related differences were significant in cerebral blood flow, metabolic rate, and flow/metabolic rate ratio within each group. Brain water content showed no significant differences between two groups.
Kim, Kun-Il;Lee, Weon-Yong;Kim, Hyoung-Soo;Kim, Shin
Journal of Chest Surgery
/
v.42
no.2
/
pp.184-192
/
2009
Background: Although complications from transfusion are known to happen, transfusion is performed during most open heart surgeries. The aim of this study was to investigate the possibility of performing cardiac surgery without allogenic blood transfusion. Material and Method: Between January to August 2007, 44 consecutive patients who underwent open heart surgery with using various blood conservation methods were retrospectively enrolled. They were divided into group I (the onpump group, n=17) and group II (the offpump group, n=27). The blood conservation methods were intraoperative autologous donation, cell saver, retrograde autologous priming, conventional ultrafiltration and modified ultrafiltration. Antianemic agents were administered to all the patients postoperatively. We analyzed the possibility of bloodless operations, the causes of homologous transfusion, the serial change of the hematocrit and the postoperative chest tube drainage, and we compared the results between the two groups. If comparison between the two groups was not reasonable, then we compared two groups with the individual control groups I and II (49 patients) in 2006. Result: 40 (90.9%) of 44 patients were successfully operated on without transfusion and the success rate was 88.2% (15/17) for group I and 92.6% (25/27) for group II. There was no statistical difference between the two groups (p=NS). The causes of transfusion were 2 cases of postoperative bleedings, 1 case of intraoperative bleeding and 1 mistake of the indication for transfusion. There was no statistical difference of the total chest tube drainage (Group I: $417{\pm}359mL$, Group II: $451{\pm}237mL$) (p=NS), but the total chest tube drainages of the two groups were less than each of the control groups 1 and II (p<0.05). The lowest hematocrit level of Group I was $16.4{\pm}2%$, and this occurred just after infusion of cardioplegics and the hematocrits of both groups were recovered to the preoperative level at 2 months postoperatively. Conclusion: In this study, bloodless open heart surgery could be performed in 90.9% of the patients with intraoperative autologous donation, cell saver, retrograde autologous priming, conventional ultrafiltration and modified ultrafiltration. A combination of various blood conservation methods is the most important and bloodless cardiac surgery could be performed with meticulous bleeding control and strictly following the transfusion indications.
Purpose: End-of-life (EoL) decisions are challenging and multifaceted for patients and physicians. This study was aimed to explore how EoL care is practiced for patients with a do-not-resuscitate (DNR) order. Methods: We retrospectively analyzed medical records of patients who died after agreeing to a DNR order in 2016 at a university hospital. Characteristics including cause of death, intensity of EoL care, and other factors were reviewed and statistically analyzed. Results: Of total 375 patients, 170 patients (45.3%) died with malignancies, and 205 patients (54.6%) with other causes involving the central nervous system (19.2%), pulmonary (14.7%), cardiologic (6.7%) and infectious (6.4%) conditions. Both the cancer and non-cancer patient groups showed a short duration from DNR to death (median 3 days vs 2 days, P=0.629). An intensive care group comprising patients who received one or more intensive treatments such as ventilator (n=205) showed a higher number of non-cancer patients and a shorter duration from DNR to death than a group that withheld treatment before DNR (P<0.05). Conclusion: EoL decisions were made very late by both cancer and non-cancer patients. About half of the patients did not have cancer, and two-thirds of them decided DNR during intensive treatment. To make a good EoL decision, a shared decision making with patients should be done at an earlier stage.
Kim, Won-Gon;Lim, Cheong;Moon, Hyun-Jong;Chun, Eui-Kyung;Chi, Je-Geun;Won, Tae-Hee;Lee, Young-Tak;Chee, Hyun-Keun;Kim, Jun-Woo
Journal of Chest Surgery
/
v.30
no.5
/
pp.471-478
/
1997
Introduction: The use of rabbits as a cardiopulmonary bypass(CPB) animal model is extremely dif%cult mainly due to technical problems. On the other hand, deep hypothermic circulatory arrest(CA) is used to facilitate surgical repair in a variety of cardiac diseases. Although steroids are generally known to be effective in the treatment of cerebral edema, the protective effects of steroids on the brain during CA are not conclusively established. Objectives of this study are twofold: the establishment of CPB technique in rabbits and the evaluation of preventive effect of steroid on the development of brain edema during CA. Material '||'&'||' Methods: Fifteen New Zealan white rabbits(average body weight 3.5kg) were divided into three experimental groups; control CA group(n=5), CA with Trendelenberg position group(n=5), and CA with Trendelenberg position + steroid(methylprednisolone 30 mglkg) administration group(n=5). After anesthetic induction and tracheostomy, a median sternotomy was performed. An aortic cannula(3.3mm) and a venous ncannula(14 Fr) were inserted, respectively in the ascending aorta and the right atrium. The CPB circuit consisted of a roller pump and a bubble oxygenator. Priming volume of the circuit was approximately 450m1 with 120" 150ml of blood. CPB was initiated at a flow rate of 80~85ml/kg/min, Ten min after the start of CPB, CA was established with duration of 40min at $20^{\circ}C$ of rectal temperature. After CA, CPB was restarted with 20min period of rewarming. Ten min after weaning, the animal was sacrif;cod. One-to-2g portions of the following tissues were rapidly d:ssected and water contents were examined and compared among gr ups: brain, cervical spinal cord, kidney, duodenum, lung, heart, liver, spleen, pancreas. stomach. Statistical significances were analyzed by Kruskal-Wallis nonparametric test. Results: CPB with CA was successfully performed in all cases. Flow rate of 60-100 mlfkgfmin was able to be maintained throughout CPB. During CPB, no significant metabolic acidosis was detected and aortic pressure ranged between 35-55 mmHg. After weaning from CPB, all hearts resumed normal beating spontaneously. There were no statistically significant differences in the water contents of tissues including brain among the three experimental groups. Conclusion: These results indicate (1) CPB can be reliably administered in rabbits if proper technique is used, (2) the effect of steroid on the protection of brain edema related to Trendelenburg position during CA is not established within the scope of this experiment.
Background: Retrograde autologous priming (RAP) is known to be useful in decreasing the need of transfusions in cardiac surgery because it prevents excessive hemodilution due to the crystalloid priming of cardiopulmonary bypass circuit. However, there are also negative side effects in terms of blood conservation. We analyzed the intraoperative blood-conserving effect of RAP and also investigated the efficacy of autotransfusion and ultrafiltration as a supplemental method for RAP. Material and Method: From January 2005 to December 2007, 117 patients who underwent isolated coronary artery bypass operations using cardiopulmonary bypass (CPB) were enrolled. Mean age was 63.9$\pm$9.1 years (range 36$\sim$83 years) and 34 patients were female. There were 62 patients in the RAP group and 55 patients in he control group. Intraoperative autotransfusion was performed via the arterial line. RAP was done just before initiating CPB using retrograde drainage of the crystalloid priming solution. Both conventional (CUF) and modified (MUF) ultrafiltrations were done during and after CPB, respectively. The transfusion threshold was less than 20% in hematocrit. Result: Autotransfusions were done in 79 patients (67.5%) and the average amount was 142.5$\pm$65.4 mL (range 30$\sim$320 mL). Homologous red blood cell (RBC) transfusion was done in 47 patients (40.2%) and mean amount of transfused RBC was 404.3$\pm$222.6 mL. Risk factors for transfusions were body surface area (OR 0.01, 95% CI 0.00 $\sim$ 0.63, p=0.030) and cardiopulmonary bypass time (OR 1.04, 95% CI 1.01 $\sim$ 1.08, p=0.019). RAP was not effective in terms of the rate of transfusion (34.5% vs 45.2%, p=0.24). However, the amount of transfused RBC was significantly decreased (526.3$\pm$242.3ml vs 321.4$\pm$166.3 mL, p=0.001). Autotransfusion and ultrafiltration revealed additive and cumulative effects decreasing transfusion amount (one; 600.0$\pm$231.0 mL, two; 533.3$\pm$264.6 mL, three; 346.7$\pm$176.7 mL, four; 300.0$\pm$146.1 mL, p=0.002). Conclusion: Even though RAP did not appear to be effective in terms of the number of patients receiving intraoperative RBC transfusions, it could conserve blood in terms of the amount transfused and with the additive effects of autotransfusion and ultrafiltration. If we want to maximize the blood conserving effect of RAP, more aggressive control will be necessary - such as high threshold of transfusion trigger or strict regulation of crystalloid infusion, and so forth.
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