• Korean Journal of Veterinary Research
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• v.56 no.3
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• pp.161-166
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• 2016

Hyperadrenocorticism (HAC) is a common endocrinopathy among dogs that causes multisystemic signs. This study was conducted to evaluate cardiocirculatory, biochemical, and hemostatic parameters in dogs with HAC at diagnosis, in addition to verifying whether abnormal parameters could be controlled by initial treatment with trilostane. Fifteen dogs with HAC were assessed by systolic blood pressure measurement, electrocardiography, Doppler echocardiography, serum concentration of troponin I, and biochemical and hemostatic profile at diagnosis and after trilostane therapy. Unlike biochemical parameters, hemostatic and cardiocirculatory parameters were not significantly influenced by the onset of treatment. The authors believe that clinical treatment with trilostane for 3 to 4 months might not be sufficient for the stabilization of cardiocirculatory abnormalities such as hypertension. Therefore, dogs with HAC must receive cardiocirculatory monitoring at diagnosis and during drug treatment.

• Parasites, Hosts and Diseases
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• v.46 no.4
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• pp.223-227
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• 2008

Changes in selected blood and serum components and electrocardiography (ECG) were investigated in 20 adults (13 females and 7 males) of water buffaloes suffering from severe theileriosis. The age of all animals used in this study ranged 1.5-5yr. Theileriosis was diagnosed by observation of parasites in the peripheral blood and the presence of schizonts in lymphocytes that were provided from swollen lymph nodes. Statistically significant decreases were observed in the means of RBC, WBC, and packed cell volume (PCV) in blood of infected animals. The means levels of sodium, calcium, phosphorus, and potassium of infected animals were lower than healthy animals, but only the decrease of potassium was significant. The mean serum activities of aspartate transferase and alanine aminotransfrase were significantly higher than in un infected animals. Three cases had atrial premature beat, 2 cases had sinus tachycardia, 2 had sinus arrhythmia, and 1 had first degree of atrioventricular block in ECG. The present study showed that T. annulata infection in cattle is associated with hematological and biochemical, and ECG changes.

• Journal of Chest Surgery
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• v.24 no.4
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• pp.421-427
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• 1991

Atrial fibrillation[Af] is closely related to thrombus in left atrium, systemic embolism, and loss of the contribution of atrial contraction to cardiac output. Therefore maintenance of sinus rhythm[SR] is undoubtedly hemodynamically superior to Af in the clinical course of mitral valvular disease especially in the unstable period immediately after surgery. In this article, the conversion rate and the factors influencing the conversion of Af to SR after surgery were studied. Ninety-three patients with mitral valvular replacement at Chungnam National University Hospital were analysed with electrocardiography before and after surgery during the period from June 1985 to June 1990. Eighty patients presented Af before surgery. Twenty-four[30Yo] of the patients were converted to SR[A group] and fifty six presented continuous Af after surgery[B group]. The duration of preoperative Af, preoperative left atrial dimension[LAD], preoperative functional status[NYHA classification] and cardiothoracic[CT] ratio were factors influencing the conversion of Af to SR after surgery. The mean preoperative duration of Af was 3.5$\pm$2.6yr in group A and 7.6$\pm$4.9yr in group B. The mean preoperative LAD was 53. 7$\pm$9.4mm in group A and 62.5$\pm$11.2mm in group B. Before surgery, eleven patients[46%] were belong to NYHA class I, II in group A and eight[14%] in group B. The preoperative CT ratio was 62$\pm$6% in group A and 69$\pm$8% in group B.

• Neonatal Medicine
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• v.16 no.2
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• pp.239-243
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• 2009

Multifocal atrial tachycardia (MAT) is a rare arrhythmia in the newborn. MAT can be difficult to diagnose; it is frequently confused with atrial fibrillation. MAT is difficult to treat but often resolves spontaneously within the first year of life. A newborn with a rapid and irregular pulse rate was diagnosed with multifocal atrial tachycardia by eletrocardiography (ECG) using a hand-made transesophageal electrode. Treatment with propranolol was attempted but ineffective. Treatment with digoxin and sotalol was attempted. The heart rhythm gradually reverted to a sinus rhythm with this treatment. We report our experience managing a neonate with MAT diagnosed by ECG using a hand-made transesophageal electrode.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.10
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• pp.2265-2271
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• 2011

This paper presents an u-health Care system based on context-awareness information. Extended project induced an education for creative engineering design. It could occur one of the issue for life care or wellness in recently life. Especially u-health Care system help on achieving this object as an efficient care-training with user blood pressure or with echocardiogram, electromyogram, electroencephalogram, or Electrocardiography. In this paper, development project show an u-health care system based on this parameters of the context-awareness with network service and analysis provide with working memory(DB) for user data base applications.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.65 no.5
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• pp.857-861
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• 2016

In this study, we proposed a new method that can be measure ECG (Electrocardiography) and PPG (Photoplethysmography) in realtime on the site of the wrist for check the state of health in daily life. For convenience measurement of ECG the lead I method was used on the wrist, and omit the reference junction ECG I was measured in the right hand and the left hand of the potential difference. Then the measured electrocardiogram was amplified by the differential amplifier and the signals were passed HPF, LPF, and BPF filters. For removing the PPG's noise from the Motion artifact and temperature, we apply the reflective photoelectric volume pulse wave measurement method using green LED as a light source. The circuits was designed to be able to check the waveform using higher active amplification method at weak signals. For the validation of our device, the measured signals were compared with E2-KIT on same time. The results shows that the error does not exceed the maximum one, most of the data is confirmed to be issued Peak inspection of the same number.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.58 no.5
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• pp.1050-1056
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• 2009

Heart Rate Variability(HRV) is a parameter that represents monitoring variability of time intervals between R-peak in electrocardiography. HRV serves to various applications, such as indices of autonomic functions, prediction of cardiac sudden death, assessment of stress and emotional, etc. However, as measuring R-peak in ECG needs at least 3-electrodes, and it is inconvenient for end users. In this paper, we suggested the modified laplacian electrodes for measuring HRV at one-point, which are producted by MEMS fabrication and have the two circular electrodes on the pad. For optimal position and direction, we performed an experiment that compared with pearson correlation coefficient and the amplitude of signals, between standard lead II and proposed electrodes. We analyzed the HRV parameters, such as standard deviation of the NN interval(SDNN), high frequency(HF), low frequency(LF), LF/HF ratio. The result showed that the average correlation coefficient and amplitude are 0.967 and 0.685 mVpp at the position 2. The coeffiecient correlation between the standard HRV and proposed electrode-HRV is 0.999

• Journal of Chest Surgery
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• v.22 no.3
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• pp.436-447
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• 1989

The effect of Glutamate to myocardial toxicity induced by doxorubicin was studied with 20 male rats. 20 rats divided into 4 subgroups, 1st group was taken for normal control group without any treatment, 2nd group was injected with only doxorubicin, 3rd group was injected with L-glutamate and doxorubicin, and 4thd group was injected with only L-glutamate [all injections were done intraperitoneally]. Observations were made to each group on their gross findings, body weight, and electrocardiography, complete blood count and serum level of creatine phosphokinase. The results were as follows; l. In 1st group, we found no changes. 2. In 2nd group, there were many changes which were loss of body weight, dehydration, loss of body hair, diarrhea and death, in addition, elevation of CPK-MB isoenzyme and changes in EKG due to myocardial damage, leukopenia, thrombocytopenia were also found. 3. In 3rd group, there were more toxic effects containing 2 death cases, compared to 2nd group. 4. In 4th group, we found no specific changes except weight gain. These results suggest that L-glutamate which is intermediate of Krebs cycle may worsen the doxorubicin-induced myocardial toxicity.

• Korean Journal of Clinical Laboratory Science
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• v.38 no.2
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• pp.135-140
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• 2006

Magnetocardiography (MCG) is the measurement and analysis of the magnetic component of the electro-magnetic field of the human heart, usually conducted externally, using extremely sensitive devices such as a Superconducting Quantum Interference Device (SQUID). MCG is a totally noninvasive method, it uses neither radiation nor ultrasonics. The magnetic activity of the heart is registered from outside the thorax. MCG has a very high sensitivity and a high spatial resolution for very a small, local myocardial current. In comparison to the electrical signals measured by an ECG, the magnetic signal does not disturb the boundaries of tissues with different electrical properties. MCG measures the myocardial function rather than describing the morphology. MCG is a relatively new technique that promises good spatial resolution and extremely high temporal resolution, thus complementing other heart activity measurement techniques such as Electrocardiography (ECG). The clinical uses of MCG are in detecting various cardiac disorders including myocardial infarction, ventricular hypertrophy, ventricular conduction defects, Wolff-Parkinson-White (WPW) syndrome, sudden cardiac death and fetal magnetocardiography. Magnetocardiography may be used alone or together with electrcardiography for the measurement of spontaneous or overloaded activity and for research or clinical purposes.

• Journal of Dental Anesthesia and Pain Medicine
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• v.16 no.3
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• pp.217-222
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• 2016

Dental treatment is often performed under general anesthesia or sedation when an intellectually disabled patient has a heightened fear of treatment or has difficulty cooperating. When it is impossible to control the patient due to the severity of intellectual disability, conscious sedation is not a viable option, and only deep sedation should be performed. Deep sedation is usually achieved by propofol infusion using the target controlled infusion (TCI) system, with deep sedation being achieved at a slightly lower concentration of propofol in disabled patients. In such cases, anesthesia depth monitoring using EEG, as with a Bispectral Index (BIS) monitor, can enable dental treatment under appropriate sedation depth. In the present case, we performed deep sedation for dental treatment on a 27-year-old female patient with mental retardation and severe dental phobia. During sedation, we used BIS and a newly developed Anesthetic Depth Monitor for Sedation (ADMS$^{TM}$), in addition to electrocardiography, pulse oximetry, blood pressure monitoring, and capnometry for patient safety. Oxygen was administered via nasal prong to prevent hypoxemia during sedation. The BIS and ADMS$^{TM}$ values were maintained at approximately 70, and dental treatment was successfully performed in approximately 30 min.