View clinical trials related to Dyspnea.
Filter by:"Dyspnea" refers to the awareness of breathing discomfort that is typically experienced during exercise in health and disease. In various participant populations, dyspnea is a predictor of disability and death; and contributes to exercise intolerance and an adverse health-related quality-of-life. It follows that alleviating dyspnea and improving exercise tolerance are among the principal goals of disease management. Nevertheless, the effective management of dyspnea and activity-limitation remains an elusive goal for many healthcare providers and current strategies aimed at reversing the underlying chronic disease are only partially successful in this regard. Thus, research aimed at identifying dyspnea-specific medications to complement existing therapies for the management of exertional symptoms is timely and clinically relevant. The purpose of this study is to test the hypothesis that single-dose inhalation of nebulized ondansetron (a serotonin 5-HT3 receptor antagonist) will improve the perception of dyspnea during strenuous exercise in health, young men. To this end, the investigators will compare the effects of inhaled 0.9% saline placebo and inhaled ondansetron (8 mg) on detailed assessments of neural respiratory drive (diaphragm EMG), ventilation, breathing pattern, dynamic operating lung volumes, contractile respiratory muscle function, cardio-metabolic function and dyspnea (sensory intensity and affective responses) during symptom-limited, high-intensity, constant-work-rate cycle exercise testing in healthy, men aged 20-40 years.
Prolonged Collagen/Epinephrine - closure time (CEPI-CT) indicates platelet dysfunction in CKD patients taking antiplatelet agent. The synthetic vasopressin derivative, Desmopressin (DDAVP) shortens the prolonged bleeding time and improves platelet dysfunction measured by in vitro closure time: CEPI-CT in uremic patients. Desmopressin also antagonizes the in vitro platelet dysfunction induced by GPIIb/IIIa inhibitors, clopidogrel and aspirin. The investigators designed a prospective study to evaluate the effect of desmopressin on platelet function, as measured by in vitro collagen/epinephrine - closure time, in uremic patients who were taking antiplatelet drugs.
The goal of this clinical research study is to learn if fentanyl nasal spray can help to control shortness of breath in patients who have been treated or are being treated for cancer. Fentanyl is commonly used for treatment of cancer pain. It may help patients with their shortness of breath as well. In this study, fentanyl will be compared to a placebo. A placebo is not a drug. It looks like the study drug but is not designed to treat any disease or illness. It is designed to be compared with a study drug to learn if the study drug has any real effect.
The purpose of this study is to test whether a breath training exercise program may be used to make patients with chronic lung conditions feel less short of breath, whether such a program is well received by patients and whether a future larger study is worthwhile. The breath training exercise program uses some breathing techniques derived from Yoga practices. They were shown to help patients experiencing shortness of breath feel less short of breath in other settings. Whether the training is beneficial to patients with chronic lung conditions, especially those with a history of cancer affecting their lungs, is not clear. This study would help us answer that question.
Exertional dyspnea is a major source of crippling distress and is the hallmark symptom of fibrotic interstitial lung disease (ILD). Due to the scientific community's poor understanding of the pathophysiological mechanisms of dyspnea there are no therapeutic interventions that consistently reduce dyspnea in this population. The investigators aim to determine the physiological mechanisms of exertional dyspnea in patients with fibrotic ILD and the impact of hyperoxia on exertional dyspnea and exercise endurance. This study will likely identify an important physiological mechanism of dyspnea in fibrotic ILD and may contribute to the development of effective therapies to reduce dyspnea in this population. The central hypothesis is that dyspnea in fibrotic ILD is primarily a result of an imbalance between the drive to breathe and the tidal volume response of the respiratory system (i.e., neuromechanical uncoupling) and that experimental reduction of neuromechanical uncoupling via hyperoxic breathing will reduce exertional dyspnea and improve exercise endurance.
CTOs are common among patients with angina, and are detected in around 20% of patients undergoing coronary angiography. Treatment of CTO has been found to constitute only 7% of PCI practice on average. One of the reasons for the under-presentation of CTOs in PCI target lesions is the lack of evidence-based medical data on treatment indications, and the continued low level of accepted evidence for the treatment of CTOs by PCI in PCI guidelines. Patients with a CTO represent patients with stable coronary artery disease. The COURAGE trial comparing PCI with optimal medical therapy in stable coronary disease did not show a difference in mortality or myocardial infarction between the two treatment options. However, CTOs were not included in the COURAGE trial. But that trial did confirm the superiority of PCI over OMT in controlling symptoms of angina, with a high cross-over rate to PCI. Whether PCI for CTO is superior to OMT in reducing MACE in those patients with a large ischaemic burden has never been tested in a randomized controlled trial. While there is compelling evidence from registry studies of a clinical and prognostic benefit following successful PCI of CTO compared with PCI failure, there has been no randomized controlled trial of contemporary PCI using drug-eluting stents versus optimal medical therapy. The COURAGE trial nuclear sub-study confirms both that prognosis is closely related to the extent of residual ischaemia and that PCI is more effective in reducing residual ischaemia than optimal medical therapy alone. This confirms earlier retrospective data suggesting that the benefit of PCI is greatest in patients with moderate (10-20%) or severe (>20%) ischaemia. Study hypothesis: PCI with Biolimus eluting stent implantation plus OMT will be superior to OMT alone in improving health status at 12-month follow-up, and will be noninferior with respect to the composite of all cause death/ non fatal MI at 36-month follow up, in patients with a CTO in an epicardial coronary artery >2.5 mm diameter and chronic stable angina with evidence of ischemia and viability in the territory subtended by the CTO
Routine surgery requires artificial breathing through the placement of a plastic tube into the patient's windpipe via mouth or nose. This tube serves as the source of providing oxygen to the patients during surgery. Difficulties during insertion of this tube may lead to serious complications and during this life-threatening crisis the only way to provide oxygen to the patient is by the help of a procedure called cricothyrotomy (CTY). CTY is a life saving procedure that involves an incision on the patient neck at a very precise location called Cricothyroid Membrane (CTM). The current method of identifying this location is by palpation of neck cartilages by the operator. The incorrect identification of the CTM could lead to many complications. In certain patients such as obese or distorted neck features the identification of CTM would be difficult. Ultrasound (US) has improved the success rate of many anesthesia procedures .Its use has been described for identification of neck structures; however, this technique of localization has not been validated against the gold standard which is the use of CT scan. The purpose of our study is to determine the precision of identifying the CTM using the US versus the conventional finger palpation when compared to the gold standard.
The goal of this clinical research study is to learn if dexamethasone can help reduce shortness of breath in cancer patients. Researchers also want to learn if it can help to improve lung function and quality of life. In this study, dexamethasone will be compared to a placebo. Dexamethasone is commonly used for treatment of nausea, tiredness, and pain. It may help patients with shortness of breath. A placebo is not a drug. It looks like the study drug but is not designed to treat any disease or illness. It is designed to be compared with a study drug to learn if the study drug has any real effect.
The B-RIPPED scan is a standardized ultrasound evaluation of pulmonary B-lines, Right ventricle size and strain, Inferior Vena Cava collapsibility, Pleural and Pericardial Effusion, Pneumothorax, Ejection Fraction, and lower extremity Deep Venous Thrombosis. Primary outcomes measured are the magnitude of change in differential diagnoses.
The purpose of this study is to see if taking tolvaptan by mouth in addition to the regular treatment received for shortness of breath due to heart failure will work better than the regular treatment alone. The study will also look to see if other symptoms of heart failure or problems associated with heart failure treatments, like changes in kidney function, are affected by tolvaptan. The primary hypothesis is that the addition of oral Tolvaptan to fixed dose furosemide will be more effective at relieving dyspnea than fixed dose furosemide alone.