Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Circulatory and Respiratory Physiology"”.
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Prediction of Cardio-respiratory Fitness Utilizing a Modified Step Test Protocol
… newly developed Jackrabbit step test equation and to determine if the Jackrabbit equation is more reliable than the Queen’s College step test (QCST). It was hypothesized that the Jackrabbit equation would provide a valid prediction of VO<sub>2</sub>peak and would provide more reliability than …
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Effect of Lateral Positioning on Central Venous Pressure
… on the same horizontal plane for both supine and lateral measurements. It was also hypothesized that the length of time spent in the lateral position would not alter the pressure.</p> <p>It is recognized that several factors do indeed play important roles in the maintenance of central venous …
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A Follow-up Study of Patients with Chronic Obstructive Lung Disease and their Practice of the Breathing Pattern
… instruction to continue exercising the abdominal and diaphragmatic muscles, with the utilization of a breathing pattern. Literature was reviewed which revealed contradictory findings in regard to the physiological benefits of the use of the breathing pattern. Nine patients met the criteria and …
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Beliefs and Practices of Expert Respiratory Care Faculty on Critical-Thinking Learning: a Case Study
… skills during the professional training of respiratory therapists is imperative for good practice. Research evidence suggests that interactive instructional strategies are far more effective than traditional lectures. Missing from the literature are thick descriptions of how faculty organize …
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Patterns of Fetal Lamb Regional Cerebral Blood Flow during and after Prolonged Hypoxia
… during prolonged intrauterine hypoxia, total and regional cerebral blood flows increase to the same extent without evidence of preferential shunting to critical brainstem or subcortical areas. Neuropathologic studies have indicated relative sparing of these areas during similar animal …
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The Cardiovascular Demands of Division I Sideline Cheerleaders During Training and Football Games
… this study was to evaluate the autonomic balance and cardiovascular demands of collegiate sideline cheerleaders between practice and game settings, and throughout four quarters of a football game; and to evaluate the physical fitness of collegiate Division I cheerleaders. Eleven cheerleaders …
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The Effects of Particular Sounds on Certain Indices of Cardio-pulmonary Functions
… certain indices of cardio-pulmonary function and the degree and pattern of changes which occurred in the indices. The specific physiological parameters chosen to be monitored were heart rate, respiratory rate, mean tidal volume, instantaneous minute volume, and oxygen consumption. The …
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Osteopontin and Cadherin 11 Are Novel Mediators and Drug Targets For Chronic Lung Diseases
… (CLDs) are a considerable source of morbidity and mortality and are thought to arise from dysregulation of normal wound healing processes. An aggressive, feature of many CLDs is pulmonary fibrosis (PF) and is characterized by excess deposition of extracellular matrix (ECM) proteins from …
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Relationship of Ventilation Ability and Positioning in Left-Sided Congestive Heart Failure Patients
… positioning is used to relieve dyspnea, edema, and fatigue in congestive heart failure patients. According to the review of literature, improved ventilation as measured by specific lung volumes and lung mechanics occurred with upright positioning in normal persons. The effects of specific …
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A Study to Demonstrate the Immediate Destination of an Embolus Formed in the Lumen of a Peripheral Venous Catheter
… was that the clot may lodge anywhere along the circulatory pathway.</p> <p>Indications of need for the study as shown by the review of literature were the following: (1) the complications resulting from the frequent use of intravenous polyethylene catheters, (2) experimental studies that showed …
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Endogenous Mechanisms Regulating Myeloid Cell Mediated Inflammation During Acute Lung Injuries
… for patients are limited to supportive care and novel approaches are urgently needed. Appreciating the role of excessive inflammation that underlies the pathophysiology of ALI, we sought to identify endogenous mechanisms that dampen inflammation. Here we investigated two pathways that worked …
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Cardioregulatory Role of the Abdominal Ganglion of APLYSIA CALIFORNICA
… preparation of this mollusc was developed and used to study the cardioregulatory function of the ganglion and nerves. The heart was perfused with artificial sea water through an atrial cannula and the gastro-esophageal artery was catheterized for blood pressure monitoring. The presence and …
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Cerebral Microcirculatory Effects of Maturation
… studies demonstrate that in the second (2B) and fourth (4B) branches of newborn and adult sheep middle cerebral arteries, 5-HT2 serotonergic receptors mediate contractile responses to serotonin and that alpha-1 adrenergic receptors mediate contractile responses to norepinephrine. In addition, …
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Early Identification and Intervention in Patients with Atrial Fibrillation Using an Implantable Cardiac Monitor to Significantly Improve Guideline-Based Anticoagulation Therapy in an Outpatient Cardiology Clinic
… between the atrial fibrillation (AF) and other variables (e.g., BMI), (c) examine the frequency and the length of time to AF diagnosis in patients implanted with an implantable cardiac monitoring (ICM) device, (d) observe provider patterns of treatment with oral anticoagulants (OACs), …
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Vascular Mechanisms of Rhabdomyolysis-induced Acute Kidney Injury
… (RVR) results in renal blood flow (RBF) and glomerular filtration rate (GFR) reduction, tubular injury, and acute kidney injury (AKI). The mechanisms that underlie rhabdomyolysis-induced AKI are not fully understood but may involve the local production of vasoactive mediators in the …
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Role of Cerebral Vasculature and Effect of Circulating Exosomes in Propagation of Systemic Inflammatory Responses into the Central Nervous System
… during SAE, which ultimately leads to delirium and cognitive dysfunction, remains elusive. The goal of this project was to study the molecular events of SAE to capture its onset and progression into the central nervous system (CNS), and further identify the cellular players involved in mediating …
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Ankyrin-B and Mtor Complex 1 In The Regulation of Electrical Activities In The Heart
… regulation of electrical activities in the brain and the heart. In the brain, the tumor suppressor gene <em>TSC2</em> encodes the protein product tuberin that interacts with hamartin to form a heterodimer Tuberous Sclerosis Complex (TSC) that regulates mTORC1. When <em>TSC2 </em>is disrupted, …
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Delayed Thrombus Resolution and Fibroproliferative Vascular Wound Healing From Deficiency of Type Iii Collagen: A Paradoxical Mechanism For Tissue Fragility
… Cutaneous wounds heal poorly in these patients, and they are susceptible to spontaneous and catastrophic rupture of expansible hollow organs like the gut, uterus, and medium-sized to large arteries, which leads to premature death. Although the predisposition for organ rupture is often attributed …
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Peripheral and Central Muscarinic Cholinergic Receptors in Arterial Blood Pressure Regulation
Wray, David Walter, Peripheral and Central Muscarinic Cholinergic Receptors in Arterial Blood Pressure Regulation. Master of Science (Biomedical Sciences), December, 1999, 70 pp., 7 tables, 8 illustrations, references, 83 titles. This study was designed to test the hypothesis that an age-related …
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Alternative Polyadenylation Modulates Expression of Pro-Fibrotic Proteins and Contributes to Lung Fibrosis
… prevalence, there is currently no cure for IPF, and the cause of this disease is still unclear. Our laboratory and collaborators have shown that nudix hydrolase 21 (NUDT21, which is also known as cleavage factor 25, CFIm25) is a key regulator of alternative polyadenylation (APA). NUDT21 depletion …