• Applied Microscopy
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• v.33 no.4
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• pp.325-333
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• 2003

Fine structural characteristics of the heart tube and its cardiac muscle cells in spider, Araneus ventricosus are investigated by both of scanning and transmission electron microscopes. The heart tube of the spider is extended mid-dorsally along the anterior part of the abdomen, and is consisted of the thin outer layer of connective tissue (epicardium) and the thick muscle layer (myocardium). The myocardium in the spider has a typical fanlike spiral structure toward anterior part put across between the muscle fibers. Therefore, it did not give rise to the intima, and muscle cells are in direct contact to the hemolymph. The heart tube appeared to be three pairs of ostia and numerous hemocytes accumulated at the inner surface of the myocardial layer. Among several kinds of the hemocytes, the oenocytoids are the most predominant hemocytes accumulated along the myocardial folds which stretched toward heart lumen. The heart muscle cells are cross striated, branched, and multinucleated. They contain a lot of mitochondria, which provide for the continuous energy demands of the heart. Thread-like ganglion on the dorsal side of the heart tube gives off axons that innervate the heart muscle cells.

• Journal of Biomedical Engineering Research
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• v.26 no.6
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• pp.373-381
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• 2005

The respiratory and heart beat signals are the fundamental physiological signals for sleep monitoring in the home. Using the air mattress sensor system, the respiration and heart beat movements can be measured without any harness or sensor on the subject's body which makes long term measurement difficult and troublesome. The differential measurement technique between two air cells is adopted to enhance the sensitivity. The concept of the balancing tube between two air cells is suggested to increase the robustness against postural changes during the measurement period. With this balancing tube, the meaningful frequency range could be selected by the pneumatic filter method. The mathematical model for the air mattress and balancing tube was suggested and the validation experiments were performed for step and sinusoidal input. The results show that the balancing tube can eliminate the low frequency component between two cells effectively. This technique was applied to measure the respiration and heart beat on the bed, which shows the potential applications for sleep monitoring device in home. With the analysis of the waveform, respiration intervals and heart beat intervals were calculated and compared with the signal from conventional methods. The results show that the measurement from air mattress with balancing tube can be used for monitoring respiration and heart beat in various situations.

• The Korean Journal of Pain
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• v.9 no.1
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• pp.235-238
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• 1996

Hyperhidrosis is the distressing condition of abnormal sweating which affects the palm, sole and axillary region. Transthoracic endoscopic sympathectomy is recommended as the treatment of choice for hyperhidrosis, especially when the upper limbs are affected. We experienced a case of accidental cauterization of right azygos vein in a healthy 23 year old male during endoscopic transthoracic sympathectomy. We changed the single lumen endotracheal tube to a double lumen tube which made it easier to perform the explo-thoracotomy and bleeder ligation under one lung ventilation. Crystalloid and colloid solutions, and packed RBC were loaded during explo-thoracotomy. Monitoring showed the signs indicating pulmonary edema. Pulmonary arterial catheterization revealed global heart failure. The patient was transfered to ICU for intensive management for heart failure. On the 4th postoperative day, pulmonary edema and heart failure were cured; and the patient was extubated. But in the evening of the same day ST-segment elevation and Q-wave were noted on ECG monitoring. On the 13th postoperative day coronary angiography was performed. This revealed left apex focal hypokinesia, patent coronary artery and accidental right coronary spasm, treated by vasodilator. On the 14 day, after surgery, he was discharged to return to work.

• Journal of Korean Academy of Nursing
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• v.25 no.2
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• pp.341-350
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• 1995

A quasi-experimental study was conducted to examine the effect of ice pack application to post cardiac surgery toddlers before C-tube removal. Twenty toddlers aged 13 months to 24 months, who were admitted to the hospital for open heart surgery during the period from July, 1993 to October, 1993 were randomly assigned to the experimental or control group. An ice pack was applied to the C-tube insertion site for 8 minutes before C-tube removal for the experimental group. The children were videotaped during the procedure to assess pain behavior and crying time. The score on the Modified Behavioral Pain Scale(MBPS), crying time, and vital signs were measured to determine the effect of ice pack application. The data were analyzed using Mann-Whitney U test, Paired t-test, and Pearson correlation coefficient. The result of the study are as follows : 1. There was a significant difference between the experimental group and the control group in pain behavior (U=17.0, p=.01). 2. There was no significant difference between the two groups in crying time. 3. There was a significant difference between the two groups in heart rate (U=24.5, p=.05). 4. There was a significant difference between the two groups in systolic blood pressure (U=24.0, p=.05) 5. There was a significant difference between the two groups in diastolic blood pressure (U=23.0, p=.04). 6. There was no significant difference between the two groups in respiration rate. 7. Pain behavior was significantly correlated with heart rate, systolic blood pressure, and crying time (r=.50, .54 and .59, p<.05). The result showed that the ice pack application was effective to reduce pain related to C-tube removal for the toddlers. From the study, it is recommended that the effectiveness of the cold ap-plication to children undergoing different painful procedures be examined to determine the most effective length of cold application to reduce pain in children.

• Journal of Dental Anesthesia and Pain Medicine
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• v.17 no.3
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• pp.231-233
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• 2017

Wolf-Hirschhorn syndrome is a rare hereditary disease that results from a 4p chromosome deletion. Patients with this syndrome are characterized by craniofacial dysgenesis, seizures, growth delay, intellectual disability, and congenital heart disease. Although several cases have been reported, very little information is available on anesthetic management for patients with Wolf-Hirschhorn syndrome. We encountered a case requiring anesthetic management for a 2-year-old girl with Wolf-Hirschhorn syndrome. The selection of an appropriately sized tracheal tube and maintaining intraoperatively stable hemodynamics might be critical problems for anesthetic management. In patients with short stature, the tracheal tube size may differ from what may be predicted based on age. The appropriate size ( internal diameter ) of tracheal tubes for children has been investigated. Congenital heart disease is frequently associated with Wolf-Hirschhorn syndrome. Depending on the degree and type of heart disease, careful monitoring of hemodynamics is important.

• Journal of Chest Surgery
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• v.23 no.6
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• pp.1139-1145
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• 1990

Seven infants less than age 3 months underwent patch aortoplasty and tube graft bypass for relief of coarctation of aorta. All had intractable congestive heart failure, despite aggressive medical therapy Each infant had other cardiac anomalies including patent ductus arteriosus, ventricular septal defect, atrial septal defect and congenital mitral stenosis. All patients underwent closure of the ductus arteriosus and patch angioplasty of the aorta to produce a luminal diameter of at least 15mm or tube graft interposition utilizing the Gortex tube graft diameter larger than 10mm. In 5 patients who had ventricular defect, they underwent pulmonary arterial banding. &ere was one hospital death 17 days after operation secondary to the hydronephrosis and renal failure. Hospitalization was less than 10 days after operation except one case. In 3 patients who had associated VSD, open heart surgery[VSD closure+PA debanding]was done without difficulty. Surgical repair of critical coarctation of the aorta in infants can safely be offered despite the poor preoperative condition and presence of other cardiac anomalies.

• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.493-496
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• 2005

For home healthcare, the unconstrained measurement of physiological signal is highly required to avoid the inconvenience of users. The recording and analysis of the fundamental parameters during sleep like respiration and heart beat provide valuable information on his/her healthcare. Using the air mattress sensor system, the respiration and heart beat movements can be measured without any harness or sensor on the subject's body. The differential measurement technique between two air cells is adopted to enhance the sensitivity. The balancing tube between two air cells is used to increase the robustness against postural changes during the measurement period. The meaningful frequency range could be selected by the pneumatic filter with balancing tube. ECG (Electrocardiography) and respiration sensor (plethysmography) were measured for comparison with the signal from air mattress. To extract the heart beat information from air pressure sensor, digital signal processing technique was used. The accuracy for breathing interval and heart beat monitoring was acceptable. It shows the potentials of air mattress sensor system to be the unconstrained home sleep monitoring system.

• Journal of Korean Academy of Nursing
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• v.14 no.2
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• pp.12-18
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• 1984

The purpose of this study was to compare educational needs following open heart surgery assessed by nurses & patients themselves, Data were collected from Nov. 1983 to Jan. 1984 through administration of Questionnaire developed for this study by the researcher. The subjects were 45 patients who experienced open heart surgery and 29 nurses who taking care of these patients in chest surgery ward at Seoul National University Hospital. The Data were analyzed by T-test and One Way ANOVA according to dependent variables. The result were as follows 1. There are significant difference between educational needs, assessed by nurses and patients themselves. (p<0.05) The nurses reported higher score of educational needs than patients. 2. In comparison of content area of educational needs, there was significant difference according to respiratory care, fain, chest tube care and operation including heart function between two groups. But, there was no significant difference in diet, activity, complication, emotional care and medication between two groups. 3. The priorities in content area of educational needs rated by nurses and patients were similar.

• Journal of The Korean Dental Society of Anesthesiology
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• v.1 no.1 s.1
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• pp.10-15
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• 2001

Background: This prospective study was designed to compare the cardiovascular response to endotracheal insertion of either an orotracheal tube or a nasotracheal tube Methods: 120 ASA physical status I and II surgical patients requiring general anesthesia and tracheal intubation were studied and assigned to two groups: orotracheal intubation group (n = 60) and nasotracheal intubation group (n = 60). Patients were premedicated with midazolam 0.05 mg/kg and glycopyrrolate 0.005 mg/kg intramuscularly and anesthesia was induced with thiopental sodium 5 mg/kg and succinylcholine 0.1 mg/kg intravenously. Systolic blood pressure (SBP), diastolic blood pressure (DBP). mean arterial pressure (MAP) and heart rate (HR) were assessed noninvasively before induction of anesthesia and immediately after intubation, 1 min, 2 min, 3 min, and 5 min after intubation. Results: Cardiovascular responses such as SBP, DBP, MAP and HR were similar for both techniques and no significant differences between two groups were observed until 5 min after intubation. Conclusions: In healthy ASA I and II patients with normal blood pressure, induction doses of thiopental sodium 5 mg/kg and succinylcholine 0.1 mg/kg didn't attenuated the cardiovascular response to laryngoscopy and tracheal intubation. Insertion of an endotracheal tube may be the most invasive stimulus during intubation procedures. (JKDSA 2001; 1: 10-15)

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2002.11a
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• pp.104-104
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• 2002