نتایج جستجو برای: فرایند snd

تعداد نتایج: 36066  

Journal: :Circulation 1977
S M Yabek R E Swensson J M Jarmakani

Twenty-four children and young adults with electrocardiographic evidence of sinus node dysfunction (SND) are described. The patients, whose ages ranged from three days to 25 years, were divided into three groups based on the type of SND. Ten patients had persistent and inappropriate sinus bradycardia (group I): twelve patients had episodes of prolonged sinus arrest (group II); and seven patient...

Journal: :American journal of physiology. Heart and circulatory physiology 2001
M J Kenney M L Weiss K P Patel Y Wang R J Fels

Autospectral and coherence analyses were used to determine the effect of paraventricular nucleus (PVN) GABA(A) receptor antagonism [microinfusion or microinjections of bicuculline methiodide (BMI) 100 pmoles] on sympathetic nerve discharge (SND) frequency components (bursting pattern and relationships between discharges in regionally selective nerves) in alpha-chloralose-anesthetized rats. SND ...

Journal: :American journal of physiology. Heart and circulatory physiology 2002
Michael J Kenney Frank Blecha Yan Wang Rose McMurphy Richard J Fels

We investigated the contributions of forebrain, brain stem, and spinal neural circuits to interleukin (IL)-1beta-induced sympathetic nerve discharge (SND) responses in alpha-chloralose-anesthetized rats. Lumbar and splenic SND responses were determined in spinal cord-transected (first cervical vertebra, C1), midbrain-transected (superior colliculus), and sham-transected rats before and for 60 m...

2013
Seong Yong Park Dae Joon Kim Abdullah Aldohayan Iftikhar Ahmed Sufia Husain Ammar Al Rikabi Abdulazeem Aldawlatly Omar Al Obied Waseem Hajjar Sami Al Nassar

BACKGROUND Systematic nodal dissection (SND) is regarded as a core component of lung cancer surgery. However, there has been a concern on the increased morbidity associated with SND. This study was performed to investigate whether or not SND induces significant immune response. METHODS Sixteen dogs were divided into two groups; group 1 (n = 8) underwent thoracotomy only, and group 2 (n = 8) u...

Journal: :The American journal of physiology 1998
Michael J Kenney Dale E Claassen Michelle R Bishop Richard J Fels

Frequency-domain analyses were used to determine the effect of heat stress on the relationships between the discharge bursts of sympathetic nerve pairs and sympathetic and phrenic nerve pairs in chloralose-anesthetized rats. Sympathetic nerve discharge (SND) was recorded from the renal, splanchnic, splenic, and lumbar nerves during increases in core body temperature (Tc) from 38 to 41.4 ± 0.3°C...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2000
S M Barman G L Gebber H S Orer

We used blockade of excitatory amino acid (EAA) neurotransmission in the medullary lateral tegmental field (LTF) and rostral ventrolateral medulla (RVLM) to assess the roles of these regions in the control of inferior cardiac sympathetic nerve discharge (SND) and mean arterial pressure (MAP) in urethan-anesthetized, baroreceptor-denervated cats. Bilateral microinjection of a non-N-methyl-D-aspa...

2008
Hakan S. Orer Gerard L. Gebber Susan M. Barman

Orer HS, Gebber GL, Barman SM. Role of serotonergic input to the ventrolateral medulla in expression of the 10-Hz sympathetic nerve rhythm. Am J Physiol Regul Integr Comp Physiol 294: R1435–R1444, 2008. First published March 12, 2008; doi:10.1152/ajpregu.00012.2008.—We studied the changes in inferior cardiac sympathetic nerve discharge (SND) produced by unilateral microinjections of 5-hydroxytr...

1998
M. N. Achasov A. D. Bukin D. A. Bukin V. P. Druzhinin V. B. Golubev V. N. Ivanchenko S. V. Koshuba S. I. Serednyakov

The general purpose spherical nonmagnetic detector ( SND ) is now taking data at VEPP-2M ee collider in BINP ( Novosibirsk ) in the centre of mass energy range of 0.2 ÷ 1.4 GeV. The energy calibration of the NaI(Tl) calorimeter of the SND detector with cosmic muons is described. Using this method, the energy resolution of 5.5 % (σ) for 500 MeV photons was achieved.

Journal: :AJNR. American journal of neuroradiology 2006
M Koeda H Takahashi N Yahata K Asai Y Okubo H Tanaka

BACKGROUND AND PURPOSE Language dominance research using functional neuroimaging has made important contributions to clinical applications. Nevertheless, although recent neuroimaging studies demonstrated right-lateralized activation by human voice perception, the influence of voice perception in terms of language dominance has not been adequately studied. We aimed to accurately clarify language...

2004
Hyung-Wook Park Jeong-Gwan Cho Ju-Hyup Yum Young-Joon Hong Ji-Hyun Lim Han-Gyun Kim Ju-Han Kim Weon-Kim Young-Keun Ahn Myung-Ho Jeong Jong-Chun Park Jung-Chaee Kang

BACKGROUND Sinus node dysfunction (SND) is caused not only by intrinsic sinus node disease, but also by the extrinsic factors. Among the extrinsic factors, autonomic imbalance is most common. Symptomatic SND usually requires permanent pacemaker therapy. However, the clinical characteristics and patient response to medical therapy for hypervagotonic SND have not been properly clarified. MATERI...

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