This study was undertaken to observe the effects of centrally administred antihistamines on the blood pressure. Diphenhydramine(DPH), a H1-receptor antagonist, and ranitidine(RAN), a H2-receptor antagonist were administered intracerebroventricularly(icv) on urethane-anesthetized rabbits. 1) Both DPH and RAN administered intraccebroventricularly increased blood pressure, however the intravenous(iv) adminstration of them did not affect blood pressure. The pressor response to icv DPH was dose-dependent, but that to icv RAN was not. 2) The pressor response to icv DPH(1mg) was either markedly attenuated or reversed to depressor response by the pretreatment with icv phentolamine(250,500ug), and iv chlorisondamine(0.1, 1mg/Kg) and iv phenoxybenzamine(1mg/Kg). In cord-sectioned rabbtis, icv RAN) 1mg) did not produce pressor response. 3) The pressor responsr to icv RAN(1mg) was not affected by the pretreatment with icv phentolamine(500ug), iv chlorisondamin(1mg/Kg) and iv phenoxybenzamine(1mg/Kg), and iv phenoxybenzamine(1mg/Kg). RAN also producted pressor response in cordsectioned rabbits. These results suggest that the pressor response to icv DPH is elecited by increasing peripheral sympathetic tone via the stimulation of central alpha-adrenoreceptors and the pressor response to icv RAN is produced by releasing some humoral facotr which can increase blood pressure.
Blood Pressure ; Diphenhydramine* ; Histamine Antagonists ; Rabbits* ; Ranitidine*

Mucociliary clearance of nasal cavity is one of the most important defense mechanism of the respiratory tract. Abnormalities in the mucociliary clearance may cause pathologic condition of nose and paranasal sinus. Fifty healthy volunteers with no rhinologic disorders were studied to determine the effect of phenylephrine spray on mucociliary clearance and nasal patency. Nasal patency was evaluated using acoustic rhinometry and mucociliary clearance was measured using saccharine method. The result shows that cross sectional area of C-notch increased after phenylephrine spray but mucociliary transit time was prolonged from 476 seconds to 624 seconds, which was statistically significant(p < 0.05). These data demonstrate that phenylephrine should be used judiciously in order to minimize the negative effect of mucociliary dysfunction.
Healthy Volunteers ; Mucociliary Clearance* ; Nasal Cavity ; Nose ; Phenylephrine* ; Respiratory System ; Rhinometry, Acoustic ; Saccharin

Hearing loss in the contralateral functioning ear is a rare and distressing complication after vetibular schwannoma removal. Various possible mechanisms have been proposed, however, the etiology of hearing loss is not clear. Fortunately, this is an extremely rare occurrence, sporadic case reports have appeared in the literatures. We report two cases of acute contralateral hearing loss after vestibular schwannoma removal and discuss the possible mechanisms of the phenomenon. Although permanent deafness may result, in our cases, the hearing loss was temporary, returning to near preoperative level within one month. The etiology of hearing loss in one case is thought to be cerebrospinal fluid leakage. However, in the other case, the cause of hearing loss is not clear. A better understanding of these events may lead to preventive measures to avoid contralateral hearing loss after vestibular schwannoma removal.
Cerebrospinal Fluid ; Deafness ; Ear* ; Hearing Loss* ; Hearing* ; Neurilemmoma ; Neuroma, Acoustic*

The authors represented an analysis on 10 patients with traumatic epidural hematomas of the posterior fossa who had treated successfully from January 1984 to October 1985. The result were summarized as follows ; 1) Age incidence comprised ranging from 4 to 62 years and 6 were males and 4 were females. 2) Site of hematoma was related with fracture site closely and bleeding source confirmed during operation was transverse sinus in 4 cases, occipital sinus in 1 case, fracture site in 3 cases and unknown in 2 cases and it had close relationship between fracture site and large venous sinus. 3) Outcome was good in most cases except death in 1 and moderate disability in 1 case. Factors contributing to outcome were early detection and adequate treatment and also associated supratentorial injury.
Female ; Hematoma* ; Hemorrhage ; Humans ; Incidence ; Male ; Skull Fractures

BACKGROUND: Fibronectins(FN) are large, dimeric glycoproteins present in the plasma, loose connective tissues, and some basal lamina in vivo and synthesized by a number of cells in vitro, including lung fibroblasts, and alveolar macrophages. FN can affect the migration, proliferation, differention, and even apoptosis of various cell types, all considered necessary for organogenesis. This study was undertaken to detect the changes of localization and activity of FN, a glycoprotein molecule, in stages of lung differentiation in rats. MATERIAL AND METHOD: The experimental animals(Sprague-Dawley strain) were divided into 8 groups, a control group(adult male rats), and experimental groups of 17th day fetus, 20th day fetus, first day newborn, second day newborn, 3rd day newborn, 5th day new born, 7th day newborn. We used the immunohistological stain method with gold particle to obtain the data for distribution of FN in the alveoli, blood vessels, terminal bronchioles, alveolar macrophages and type II pneumocytes. This study revealed the FN reactions at the light and electron microscopic levels. RESULT: At 17th day fetal stage, FN reactions in fetal lung were strong on the blood vessels and moderate on the stroma. At 20th day fetal stage, FN reactions were strong on the blood vessels. After birth, FN reactions in alveolar basement membrane were maximum in the 5th and 7th day newborns. FN reactions in the blood vessels were observed to be moderate in first and second day newborns, but decreased in third day newborns. FN reactions in alveolar macrophages increased after birth. FN reactions in terminal bronchioles gradually increased after birth. 6. In type II pneumocytes, FN reactions were observed to be moderate in 1st and 3rd day newborns. CONCLUSION: Immunohistochemical analysis of rat lungs at various developmental stages revealed increased deposition of FN during the pseudoglandular stage of lung development, coinciding with the period of branching morphogenesis. Also, FN is released from type II pneumocytes. This observation, together with the strategic location of FN, suggests a role in airway formation.
Animals ; Apoptosis ; Basement Membrane ; Blood Vessels ; Bronchioles ; Connective Tissue ; Fetus ; Fibroblasts ; Fibronectins* ; Glycoproteins ; Humans ; Infant, Newborn ; Lung* ; Macrophages, Alveolar ; Male ; Morphogenesis ; Organogenesis ; Parturition ; Plasma ; Pneumocytes ; Rats*

Acute stroke has been associated with a variety of cardiac abnormalities. Data derived from EGC monitoring have suggested that cardiac arrhythmia may be more common in stroke patient. Acute stroke such as cerebral infarction has been reported to increase serum cardiac enzyme and histologic changes, focal myocardial myocytolysis. Also, plasma norepinephrine was significantly elevated in a group of stroke patients compared with non-stroke control. These observations led to the hypothesis that acute stroke may increase sympathetic activity with resultant electrocardiographic abnormalities and myocardial cell necrosis. In order to test this hypothesis, we evaluated 24 acute stroke patients for several cardiac parameter including arrythmias defected by 24 hour Holter monitoring, serum cardiac enzymes such as CK, LDH, SGOT and plasma catecholamine values. Similar studies were also performed in 15 control subjects matched with stroke patients for age. The result were as follows; 1) Arrhythmias such as VPB, SVPB in the acute stroke group were more common than in the non-stroke group. VPB(209+/-61/24hr, P<0.005) SVPB(232+/-54/24hr, P<0.005). 2) Plasma norepinephrine, epinephrine and CK was significantly elevated in a group of stroke patients compared with non-stroke controls. norepinephrine(715.3+/-93.8 pg/ml, P<0.005) epinephrine(346.1+/-63.1 pg/ml, P<0.005). 3) Stroke patients with abnormal serum CK values(above 80 IU/L) had a higher(P<0.05) mean norepinephrine concentration(776.6+/-142.0 pg/ml) than remaining stroke patients(406.3+/-101.7 pg/ml). 4) Stroke patients with high plasma norepinephrine did not exhibit an increase in cardiac arrhythmias.
Arrhythmias, Cardiac* ; Aspartate Aminotransferases ; Cerebral Infarction ; Electrocardiography ; Electrocardiography, Ambulatory ; Epinephrine ; Humans ; Necrosis ; Norepinephrine ; Plasma* ; Stroke*

The symptoms and signs of acute pulmonary arteries thrombosis are nonspecific. So clinical suspicion is the most important in the diagnosis. Treatment of pulmonary thromboembolism include anticoagulant, thrombolytic agent, or surgical intervention. We experienced a case of recurrent pulmonary thromboembolism without coagulation defect and any risk factor except old age and obese. Initially we treated with heparin, but clinical symptoms were aggravated. After we changed to urokinase (total 330 million IU/2 days), the pulmonary arteries obstruction were resolved and clinical symptoms were improved without any complications. So we report this clinical experience with review of articles.
Diagnosis ; Heparin ; Pulmonary Artery ; Pulmonary Embolism* ; Risk Factors ; Thrombosis ; Urokinase-Type Plasminogen Activator*

Subcutaneous emphysema defines collection of air in subcutaneous spaces of body. It is usually originated from air in upper airway and lower respiratory tract such as larynx, trachea, bronchus and lungs. Air in subcutaneous spaces derives from leakage of air due to tearing or ruptures of airway structures, and also accompanies pneumothorax or pneumomediastinum and/or rib or sternal fractures or other major airway injuries. We experienced a case of subcutaneous emphysema caused by laryngeal injury without any associated airway injuries at neck from motorcycle accident, so we would report a case with the review of literatures.
Bronchi ; Larynx ; Lung ; Mediastinal Emphysema ; Motorcycles* ; Neck* ; Pneumothorax ; Respiratory System ; Ribs ; Rupture ; Subcutaneous Emphysema* ; Trachea

No abstract available.
Mediastinal Emphysema*

No abstract available.
C-Reactive Protein* ; Emergencies* ; Emergency Service, Hospital* ; Troponin T* ; Troponin*