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Showing 1 to 20 of 20 for “"Hemodynamic changes"”.
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Acute hemodynamic changes associated with dance exercises in females of Lusaka, Zambia
The research was titled; Acute Hemodynamic Changes Associated with Dance Exercises in Females of Lusaka, Zambia. Dynamic exercises are known to elicit hemodynamic changes in the cardiovascular system. Zumba and ZOCA are part of a fast growing group of dance fitness programmes designed to provide a …
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Hemodynamic Changes in Hypertensive Patient using Thiopental vs Etomidate as an Induction Agent
고혈압 환자는 술중 극심한 혈압 변동을 예방하기 위해 수술 당일 아침에도 평소 복용하던 항고혈압제를 복용하는 것을 권장하고 있으나(Prys-Roberts 등, 1971) 이러한 수술 전 혈압 조절에도 불구하고 많은 고혈압 환자들은 마취 유도 후 기관 삽관전까지는 저혈압을 보이고, 기관내 삽입 시에는 심한 혈압상승을 나타낸다. 마취 유도 후 발생하는 저혈압의 원인은, 고혈압 환자들은 체내 수액량 부족 상태인 경우가 많고 또한 대부분의 전신마취제와 항고혈압제는 혈관확장효과나 심근억제효과를 가지고 있기 때문이다(Morgan, …
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Hemodynamic Changes after Endotracheal Intubation with Colloid Loading in Patients with Cerebral Aneurysm
"마취유도 시 후두경 조작과 기도삽관은 환자에게 고혈압과 빈맥을 유발할 수 있다(Morgan, 2006). 뇌동맥류 환자에서 고혈압과 빈맥은 뇌동맥류의 파열을 야기할 수 있고 이는 환자의 치사율을 증가 시키므로(Mendleson, 1946) 뇌동맥류 파열 방지를 위하여 혈역학적 변화를 최소화하는 것은 중요하다. Sevoflurane을 사용한 마취유도 시 적정농도는 2.5% (1.5 MAC)이라고 알려져 있으며 이 농도에서는 기도삽관에 의한 고혈압과 빈맥의 빈도는 줄일 수 있으나, 심한 저혈압을 초래할 수 있다. 뇌동맥류 환자 마취 …
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Hemodynamic Changes after Endotracheal Iintubation with a Lightwand or a Laryngoscope in Patients with Cerebral Aneurysm
… and lead to hypertension and tachycardia. The changes during intubation may cause a rupture of cerebral aneurysm and increase the risk of subarachnoid hemorrhage. It is reported that tracheal intubation with lightwand results in less hemodynamic stimulation compared with direct laryngoscopy. We …
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Controlled cross circulation: effects on donor hemodynamics
… was performed in six pairs of dogs to assess hemodynamic changes in the donor dog. Cardiopulmonary bypass was performed for 45 minutes, with an aortic cross clamp time of 3 5 minutes. Anesthesia was maintained in the donor dog with 1.8% end-tidal isoflurane. Parameters before and after …
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Investigating Hemodynamic Responses to Electrical Neurostimulation
… Thus, a multi-faceted regimen of lifestyle changes, medication, and device or surgical interventions is usually necessary. A potential adjunct therapy and cost-effective solution for treating cardiovascular disease that has been overlooked is neurostimulation.</p> <p>Recent studies show that …
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Η ΕΠΙΔΡΑΣΙΣ ΤΟΥ ΔΙΤΤΑΝΘΡΑΚΙΚΟΥ ΝΑΤΡΙΟΥ (NAHCO3) ΕΠΙ ΤΩΝ ΕΚ ΤΕΤΡΑΧΛΩΡΑΝΘΡΑΚΟΣ (CCL4) ΠΡΟΚΑΛΟΥΜΕΝΩΝ ΑΙΜΟΔΥΝΑΜΙΚΩΝ ΜΕΤΑΒΟΛΩΝ ΚΑΙ ΜΥΟΚΑΡΔΙΑΚΩΝ ΒΛΑΒΩΝ . ΠΕΙΡΑΜΑΤΙΚΗ ΜΕΛΕΤΗ
… ML PER KYR B.W) AND THE EFFECT OF THE CCL4 ON HEMODYNAMIC PARAMETERS AFTER CARDIAC CATHETERIZATION WAS STUDIED. IN GROUP A, 30 MINUTES AFTER CCL4 ADMINISTRATION, NAHCO3 WAS INFUSED I.V AND THE ANIMALS WERE FOLLOWED UP FOR 90' AFTER CCL4 ADMINISTRATION. IN GROUP B CCL4 ONLY WASADMINISTERED I.V. …
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Using impedance cardiography to examine changes in hemodynamic parameters during heart rate biofeedback
… The present study examined the underlying hemodynamic changes that accompany heart rate (HR) response reduction to a stressor following HR feedback training. Twenty-five healthy college males were assigned to either a HR feedback training group (FB+) or a control group (FB--) and were …
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Motor data scaling by respiration frequencies in rest
… from fMRI scan is accompanied with signal due to hemodynamic changes taking place during the scan. This hemodynamic signal is dominated by parameter alteration in the large vessels of brain. Scaling of task induced BOLD signal with hypercapnic or breathold data is one of the effective methods to …
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Cardiovascular Toxicity Induced by Fumonisin in Pigs and Horses
… artery wedge pressure in pigs. The onset of hemodynamic changes was temporally associated with increases in plasma sphinganine and sphingosine concentrations, compounds which are known to inhibit cardiac L-type calcium channels. We concluded that fumonisin-induced pulmonary edema in swine was …
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Impact of Prolonged Sitting on Central Hemodynamics: Role of Intermittent Pneumatic Compression Therapy
… sitting similarly impacts central cardiovascular hemodynamics and vascular stiffness is unknown. <strong>Purpose: </strong>Determine if prolonged sitting increases central blood pressure, aortic pulse wave reflection and vascular stiffness. <strong>Methods:</strong> In 10 subjects (Age=22±2 yrs, …
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OPTICAL COHERENCE TOMOGRAPHY FOR NEUROSURGEY AND CANCER RESEARCH
… vessel lumen automatically, OCT reveals dramatic hemodynamic changes during PIT and helps to elucidate the mechanisms behind the PIT treatment. The transformative guidance tools and the novel image processing algorithms pave a new avenue to better clinical outcomes and preclinical animal studies.
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A multimodal breast cancer imaging system using coregistered dynamic diffuse optical tomography and digital breast tomosynthesis
… image acquisition rate to enable tracking of hemodynamic changes induced by the mammographic breast compression. The most significant advance enabling fast acquisition was the design and construction of a direct analog-to-digital conversion frequency-domain near-infrared spectroscopy (FD-NIRS) …
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Late Complications in the Descending Aorta Following Valve-Sparing Root Replacement (VSRR) in Marfan Syndrome (MFS) Patients: A Computational Analysis
… native anatomy or the root surgery may alter hemodynamic factors in the DA, potentially predisposing it to dissection. This study uses computational fluid dynamics (CFD) simulations alongside statistical shape modeling (SSM) to investigate the relationships between aortic geometry, hemodynamic …
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Mechanisms and Functional Consequences of Cardiac Remodeling: Role of Myocardial Rac1 and Vascular Profilin1 Genes
… mouse model is a valuable model that can relate changes induced by endogenous Rac. While physiological versus pathological hypertrophy can be obviously distinguished by numerous qualitative and quantitative parameters, the signaling mechanisms inducing the critical transition from compensated …
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Development in children born very preterm after intrauterine growth restriction with abnormal fetal blood flow
… fetal indication before occurence of more severe hemodynamic changes. The aim of this study was to evaluate short and long-term consequences in very preterm IUGR fetuses (PT-IUGR) with abnormal blood flow in the umbilical artery. Study I: Mortality and neonatal morbidity did not differ between the …
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Characterising ATP13A3 biological function and its role in pulmonary arterial hypertension
… mice spontaneously develop PAH-like hemodynamic changes at 6-months of age. Preliminary data also revealed lower Atp13a3 level and reduced polyamine content in the lungs of the mutant mice, suggesting that Atp13a3 frameshift mutation (P452L) may contribute to PAH pathogenesis via the …
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Adaptive lung growth following exposure to simulated high altitude
… and pathological conditions may induce adaptive changes in the body which may be organ specific. Because gas exchange is the primary function of the lungs, they may undergo structural changes to adapt to the imbalance of oxygen. High altitude residents have large lungs and short body stature. …
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Dynamic 129Xe Magnetic Resonance Spectroscopy: Development and Application in Diverse Cardiopulmonary Diseases
… right heart catheterization (RHC) to meet strict hemodynamic cutoffs. However, the RHC interpretation can be challenging in patients with complex disease because the effect of comorbidities on RHC measurements is unknown. Therefore, new non-invasive diagnostic tools must be developed that can …
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Parameters and algorithms to evaluate cardiac mechanics by conductance catheter
… and the measurement protocol to adopt for hemodynamic tests on cardiac pacing was investigated. In accordance to the aims of the work, in addition to the classical time-domain parameters, a new set of indexes has been extracted, based on coherent averaging procedure and on spectral and …