• 대한한방내과학회지
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• 제33권1호
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• pp.26-38
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• 2012

Objectives : The aim of this study was to investigate the effect of partial pyloric obstruction on body weight, gastric juice, gastric surface area and gastric edema in normal intact and/or vagotomized rats. Methods : Partial pyloric obstruction was performed by wrapping a non-absorbable rubber ring (D:6 mm, W:4 mm, T:1 mm) around the 1st portion of the duodenum. Vagotomy was performed by resecting the branches around the esophagogastric junction. Pre-post body weight differential, fasting gastric juice volume, gastric surface area and gastric edema were measured at 8 weeks and 20 weeks. For the effect of pyloric reperfusion the rubber ring was removed after 8 weeks and then an additional 12 weeks of observation was performed to the end of the 20-week experimental period. Results : In the initial 8 weeks observation, the effect of pylorus obstruction and/or vagotomy was significantly remarkable in the pylorus obstructed and vagotomized group; slowdown of weight gain, increase of fasting gastric juice volume, dilatation of gastric surface area and severe gastric edema were shown. In the remaining 12 weeks observation, the effect of reperfusion was significantly remarkable in the ring-removed antral dilated group; recovery of weight gain, decrease of gastric surface area and decrease of gastric edema were shown. However, gastric juice volume was not significantly different from the other group. Conclusions : Partial pyloric obstruction plays a aggravating role and the vagus nerve plays a protective role in body weight, gastric juice, gastric surface area, and gastric edema. Furthermore, pyloric valve dysfunction as an aggravating factor strengthened in defect of the vagus nerve. These results suggest that patients with both functional pyloric outlet obstruction and hypofunction of vagus nerve need to be diagnosed in good time and treated properly.

• 수면정신생리
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• 제12권2호
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• pp.93-97
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• 2005

Nasal obstruction may cause or aggravate sleep disordered breathing but exact pathogenesis is not clear. The possible mechanism could be combination of alteration in upper airway aerodynaimcs, loss of nasal reflex or sensation, effect of mouth opening, and a genetic predisposition. Anatomical narrowing of nasal airway cause more rapid airflow and induce more negative inspiratory air pressure. So, it increases collapsibility of pharyngeal airway. Loss of nasal sensation to airflow block nasal reflex. Mouth opening decreases the activity of pharyngeal airway dilator muscles and narrowing the pharyngeal airway may occur. The treatment of nasal obstruction should be done according to the cause. The causes of nasal obstruction are various from problems of external nasal opening to nasopharynx. Relief of nasal obstruction may not cure sleep disordered breathing always. In some mild obstructive sleep apnea patients, treatment of nasal obstruction only may cure sleep disordered breathing. In some severe sleep apnea patients, treatment of nasal obstruction may increase compliance of continous nasal positive airway pressure.

• 한국응급구조학회지
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• 제9권2호
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• pp.79-88
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• 2005

The purpose of this study was to develope the Complete Airway Obstruction Maneuver Training Program and identify its effects on learning motivation, knowledge and skill of choking management in the primary school students. The subjects for the experimental group of 38 students and the control group of 39 students, all of whom are primary school students in Gwangju, the Republic of Korea. A non-equivalent control group pretest-posttest design was used and data were collected from November to December, 2003. During about 2 weeks, 2 times for a week with 80 minutes at a time, the complete airway obstruction maneuver training program was conducted in the experimental group. Experimental data were analyzed through SPSS/win 11.0 PC+, and the tests examining general characteristics between the experimental group and the control group were conducted through $x^2$-test. Fisher's exact probability test and t-test, and identifying the effect of the complete airway obstruction Maneuver training program was analysed through t-test and ANCOVA. The results of the study were as follows: 1. After intervention on the complete airway obstruction maneuver training program, Learning motivation in the experimental group was significantly higher than that of the control group. 2. After intervention on the complete airway obstruction maneuver training program, knowledge of choking management the experimental group was significantly higher than that of the control group(F=223.637, p=.000). 3. After intervention on the complete airway obstruction maneuver training program, skill of choking management the experimental group was significantly higher than that of the control group(t=46.800, p=.014). These findings suggest that the complete airway obstruction maneuver training program can facilitate learning motivation, knowledge and skill of choking management in the primary school students. Therefore it is considered that the complete airway obstruction maneuver training program can be utilized as a effective way to implement the 7th national curriculum for creative extra-activities.

• 대한의용생체공학회:의공학회지
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• 제31권4호
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• pp.302-309
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• 2010

The present study proposed a method of measuring uroflow and urophonography at the same time for more accurate diagnosis in case uroflow looks normal due to compensatory function hypertrophy in the expression of early obstruction. In case of early obstruction, there happens turbulent uroflow by the obstruction even if the uroflow looks normal and thus obstruction can be detected by measuring and analyzing signal caused by turbulent flow. We implemented a system that can measure both uroflow and urophonography, and evaluated its performance. In the experiment, we observed changes in uroflow and urophonography according to artificial pressure and the degree of obstruction, and confirmed that it is possible to determine the effect of compensatory function hypertrophy by analyzing urophonographyic parameter under the same uroflow. The results of our experiment show that the effect of compensatory function hypertrophy in the early-stage obstruction of lower urinary tract, which is not detectible with uroflowmetry alone, can be assessed through urophonographic analysis.

• 한방안이비인후피부과학회지
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• 제30권3호
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• pp.193-200
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• 2017

Objectives : This study was carried out to investigate the effect of Gyulpidaehwangbakcho-tang on rhinitis with nasal obstruction. Methods : We treated 18 rhinitis patients with nasal obstruction. We used the Visual Analogue Scale(VAS), and recorded the condition of patients as +++, ++, +, -. Results : After the treatments, all patients VAS of nasal obstruction was remarkably decreased. Conclusions : This study suggests that Gyulpidaehwangbakcho-tang is effective on rhinitis with nasal obstruction.

• Clinical and Experimental Reproductive Medicine
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• 제11권2호
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• pp.77-81
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• 1984

Epididymal biopsy has been performed without consideration of the possibility of epididymal ductal severance and obstruction which result in obstructive azoospermia. An attempt was made to study the effect of the epididymal biopsy on the obstruction of the epididymal ducts. Bilateral epididymal biopsies were done in 8 healthy rabbits (New Zealand White strain) weighing over 3 kg, and then ejaculated semens have been analyzed 5 times every other week from 1 month after biopsies. Microscopic examination of the biopsied epididymides was also done after the 5th semen analysis. The results were as follows. 1. Semen analysis: 6 out of 8 rabbits showed azoospermia from the 4th semen analysis and 2 cases showed normal number of the sperms in the 5th semen analysis. 2, Microscopic examination: 6 cases of azoospermia showed complete obstruction of the biopsied sites of the epididymides, and abscence of sperms in epididymal ducts distal to the biopsied sites of the epididymides. However, recanalization of the epididymal ducts was noted in 2 cases showing normal sperm count. Therefore, it is concluded that the epididymal biopsy should be avoided in patients who want to be fertile, because it may cause the epididymal severance and obstruction of the epididymal ducts.

• 대한한방내과학회지
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• 제41권2호
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• pp.233-240
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• 2020

Objectives: This report presents a case using acupuncture and moxibustion to treat postoperative adhesive small bowel obstruction. Case Presentation: A 62-year-old male with two previous intra-abdominal surgeries, complaining of abdominal pain, abdominal distention, and general weakness, visited Korean medicine hospital. He was suffering from small bowel obstruction that had not improve for three weeks. Methods: The patient was diagnosed with postoperative adhesive small bowel obstruction. The patient received acupuncture and moxibustion in addition to intravenous fluid treatment. The patient underwent radiologic testing on a daily basis. Results: The symptoms improved quickly with the treatment, including acupuncture and moxibustion. He was able to start eating three days after he started receiving treatment. The abdomen X-ray also showed rapid improvement. No adverse effect was observed during the nine days of hospitalization. Conclusions: This report demonstrates that acupuncture and moxibustion may be effective in treating adhesive small bowel obstruction. However, further research is needed to confirm these findings.

• 대한한방내과학회지
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• 제30권1호
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• pp.1-8
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• 2009

Objective : The aims of this study were to observe how body weight and gastric morphology were changed and whether gastric emptying was impaired in rats with partial pyloric obstruction. and to evaluate whether electroacupuncture was able to restore delayed gastric emptying. Methods : Partial pyloric obstruction was induced by wrapping a nonabsorbable rubber ring around the 1st portion of the duodenum for 2 weeks. Body gain and morphologic changes of stomach were investigated and compared with normal intact rats. Gastric emptying was measured by numbering expelled glass of beads in rats. Rats were divided into 4 groups(non-acupuncture, manual acupuncture. 3Hz-electroacupuncture. 60Hz-electroacupuncture). Stimulus intensity in two electroacupuncture groups was 1.2 times of pain threshold. Results : Partial pyloric obstruction produced a significant loss of body weight and induced a significant increase of gastric surface area. The 60Hz electroacupuncture-stimulated group significantly restored the delayed gastric emptying compared to the other groups of rats with partial pyloric obstruction. Conclusion : 60Hz electroacupuncture stimulation on Zusanli(ST36) showed significant restoration of delayed gastric emptying in rats with partial pyloric obstruction.

• Journal of Mechanical Science and Technology
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• 제17권6호
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• pp.879-887
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• 2003

The flow in a parallel walled test channel, when obstructed with a geometry at the entrance, can be forward, reverse and stagnant depending on the position of the obstruction. This interesting flow phenomenon has potential benefit in the control of energy and various flows in the process industry In this experiment, the flat plate obstruction geometry was used as an obstruction at the entry of the test channel. The parameters that influence the flow inside and around the test channel were the gap (g) between the test channel and the obstruction geometry, the length (L) of the test channel and the Reynolds number (Re). The effect of the gap to channel width ratio (g/w) on the magnitude of the velocity ratio (V$\_$i/ / V$\_$o/ : velocity inside/ velocity outside the test channel) was investigated for a range of Reynolds numbers. The maximum reverse flow observed was nearly 20% to 60% of the outside velocity for Reynolds number ranging from 1000 to 9000 at g/w ratio of 1.5. The maximum forward velocity inside the test channel was found 80% of the outside velocity at higher g/w ratio of 8. The effect of the test channel length on the velocity ratio was investigated for different g/w ratios and a fixed Reynolds number of 4000. The influence of the Reynolds number on the velocity ratio is also discussed and presented for different gap to width ratio (g/w). The flow visualisation photographs showing fluid motion inside and around the test channel are also presented and discussed.

• 대한수학회지
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• 제34권1호
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• pp.119-133
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• 1997

This paper concerns the symmetric wave solutions between two immiscible, inviscid, and incompressible fluids of different but constant densities in the presence of small elliptic obstruction of compact support at the rigid bottom when the effect of gravity is considered (Fig. 1).