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排序方式: 共有37条查询结果,搜索用时 15 毫秒
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Saeed M. Banabilh A. H. Suzina Hazama Mohamad Sidek Dinsuhaimi A. R. Samsudin G. D. Singh 《Clinical oral investigations》2010,14(5):491-498
The aim of the present study is to investigate nasal airway morphology in Asian adults with and without obstructive sleep
apnea (OSA) using acoustic rhinometry (AR), principal components analysis (PCA), and 3-D finite-element analysis (FEA). One
hundred eight adult Malays aged 18–65 years (mean ± SD, 33.2 ± 13.31) underwent clinical examination and limited channel polysomnography,
providing 54 patients with OSA and 54 non-OSA controls. The mean minimal cross section area 1 (MCA1) and the mean minimal
cross sectional area 2 (MCA2) were obtained from AR for all subjects and subjected to t tests. The OSA and control nasal airways were reconstructed in 3-D and subjected to PCA and FEA. The mean MCA1 and MCA2 using
AR were found to be significantly smaller in the OSA group than in the control group (p < 0.001). Comparing the 3-D OSA and control nasal airways using PCA, the first two eigenvalues accounted for 94% of the total
shape change, and statistical differences were found (p < 0.05). Similarly, comparing the nasal airways using FEA, the 3-D mean OSA nasal airway was significantly narrower in the
OSA group compared to the control group. Specifically, decreases in size of approx. 10–22% were found in the nasal valve/head
of inferior turbinate area. In conclusion, differences in nasal airway morphology are present when comparing patients with
OSA to controls. These differences need to be recognized as they can improve our understanding of the etiological basis of
obstructive sleep apnea and facilitate its subsequent management. 相似文献
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Harvinder S Hassan S Sidek DS Hamzah M Samsudin AR Philip R 《The Medical journal of Malaysia》2005,60(5):585-589
Human amniotic membrane as a homograft material was compared to temporalis fascia to close tympanic membrane perforations in 50 patients with chronic otitis media. Human amniotic membrane was used in 20 patients while temporalis fascia was used in the remaining 30. Anatomical closure of the perforation and reduction of the air-bone gap was measured. The graft uptake showed a 65% success rate for the amniotic membrane and 56.7% for the temporalis fascia at 3 months post-operatively. Significant closure of air-bone gap was observed in the human amniotic group. These results indicate comparable outcomes between human amniotic membrane and the temporalis fascia graft. 相似文献
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Mohd Normani Zakaria Bahram Jalaei Cheu Lih Aw Dinsuhaimi Sidek 《Neurological sciences》2016,37(6):943-948
Due to its objective nature, auditory brainstem response (ABR) evoked by complex stimuli has been gaining attention lately. The present study aimed to compare the speech-evoked auditory brainstem response (speech-ABR) results between two ethnic groups: Malay and Chinese. In addition, it was also of interest to compare the speech-ABR outcomes obtained from the present study with the published Caucasian data. Thirty healthy male adults (15 Malay and 15 Chinese) were enrolled in this comparative study. Speech syllable/da/presented at 80 dBnHL was used to record speech-ABR waveforms from the right ear of each subject. Amplitudes and latencies of speech-ABR peaks (V, A, C, D, E, F and O), as well as composite onset measures (V/A duration, V/A amplitude and V/A slope) were computed and analyzed. When the two ethnic groups were compared, all speech-ABR results were not statistically different from each other (p > 0.05). When the data from the present study were compared with the published Caucasian data, most of the statistical analyses were significant (p < 0.05). That is, Asian subjects revealed significantly higher peak amplitudes, earlier peak latencies, higher V/A amplitudes and steeper V/A slopes than that of Caucasians. The speech-ABR results between Malay and Chinese were found to be essentially similar due to anatomical similarities. Nevertheless, specific normative data for Asian adults are required as their speech-ABR results are different from that of Caucasian males. This issue should be addressed before it can be applied holistically in multiracial countries. 相似文献
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Sphingosine modulates myocyte electrophysiology, induces negative inotropy, and decreases survival after myocardial ischemia. 总被引:1,自引:0,他引:1
Gregory S Friedrichs Robert E Swillo Brian Jow Terry Bridal Randy Numann Linda M Warner Loran M Killar Kurex Sidek 《Journal of cardiovascular pharmacology》2002,39(1):18-28
Contractility studies in isolated feline myocytes have demonstrated that sphingosine, a metabolite stimulated by tumor necrosis factor (TNF) binding, decreases intracellular calcium release and depresses inotropic activity. This study investigated the electrophysiologic effects of sphingosine in isolated cat myocytes as well as the cardiodynamic consequence of TNF, sphingosine, and its metabolic precursors in vivo. In cat myocytes, sphingosine markedly decreased action potential duration, lowered action potential plateau, and inhibited L-type calcium current (I(Ca-L)). After administration of TNF, sphingomyelin, C2-ceramide, or sphingosine, only C2-ceramide and sphingosine depressed cardiac function in normal rats. Negative inotropic effects of C2-ceramide were attenuated by N-oleoylethanolamine (NOE), a ceramidase inhibitor that blocks sphingosine formation. Rats pretreated with NOE before undergoing 30 min of acute regional myocardial ischemia followed by 150 min of reperfusion exhibited improved survival. Most deaths could be attributed to acute pump failure accompanied by bradycardia. Myocardial infarct size and peak serum TNF were not different between NOE- and vehicle-treated groups (3,908 +/- 1097 pg/ml and 3,027 +/- 846 pg/ml, respectively). These results indicate that sphingosine exerts direct inhibitory effects on the action potential and I(Ca-L) in isolated feline myocytes, consistent with previously reported sphingosine activity on I(Ca-L) in isolated rat myocytes. The in vivo study suggests that reducing sphingosine production with N-oleoylethanolamine attenuates cardiodepression and can improve overall survival after ischemic injury. Clearly, agents that modulate sphingosine production limit cardiodepression and may provide a therapeutic benefit in clinical conditions of myocardial inflammatory injury. 相似文献
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Teratoma of the tongue is a rare entity. We present a male newborn with massive lingual teratoma and cleft palate, which surprisingly did not cause immediate airway obstruction. This case illustrates a huge mass in the oral cavity, which was missed on antenatal ultrasonography because it did not present with polyhydramnios. The mass was excised under general anaesthesia. Histopathologically, it consisted of all three layers of embryonic elements with predominantly glial tissue. Postoperatively, the patient developed hypoglossal nerve palsy, and no recurrence was detected after four years. 相似文献
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Saeed M. Banabilh A. H. Suzina Sidek Dinsuhaimi A. R. Samsudin G. D. Singh 《Sleep & breathing》2009,13(1):19-24
Introduction Obstructive sleep apnea (OSA) and obesity are serious, widespread public health issues.
Objective To localize and quantify geometric morphometric differences in facial soft tissue morphology in adults with and without OSA.
Materials and methods Eighty adult Malays, consisting of 40 patients with OSA and 40 non-OSA controls, were studied. Both groups were evaluated
by the attending physician and through ambulatory sleep studies. 3-D stereophotogrammetry was used to capture facial soft
tissues of both groups. The 3-D mean OSA and control facial configurations were computed and subjected to principal components
analysis (PCA) and finite-element morphometry (FEM).
Results The body mass index was significantly greater for the OSA group (32.3 kg/m2 compared to 24.8 kg/m2, p < 0.001). The neck circumference was greater for the OSA group (42.7 cm compared to 37.1 cm, p < 0.001). Using PCA, significant differences were found in facial shape between the two groups using the first two principal
components, which accounted for 50% of the total shape change (p < 0.05). Using FEM, these differences were localized in the bucco-submandibular regions of the face predominantly, indicating
an increase in volume of 7–22% (p < 0.05) for the OSA group.
Conclusion Craniofacial obesity in the bucco-submandibular regions is associated with OSA and may provide valuable screening information
for the identification of patients with undiagnosed OSA. 相似文献