Publications by authors named "Thapamagar S"

Foster, Katharine, James D. Anholm, Gary Foster, Suman Thapamagar, and Prajan Subedi. Effects of naltrexone on sleep quality and periodic breathing at high altitude.

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Background: Widespread drug shortages led to higher utilization of ketamine in our intensive care unit, especially among patients with SARS-CoV-2.

Objectives: To evaluate the impact of continuous infusion of ketamine on vasopressor requirements in patients with SARS-CoV-2.

Method: This was a single-center, retrospective, cohort study comparing mechanically ventilated (MV), adult patients with SARS-CoV-2 receiving either propofol or ketamine for at least 72 hours.

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Article Synopsis
  • Dronabinol, a cannabinoid, was tested to see if it could help reduce dyspnea and improve exercise tolerance in COPD patients.
  • A pilot study involving 11 participants used a double-blind randomized, crossover design with dronabinol or placebo over 6 weeks.
  • Results showed no significant improvements in dyspnea, fatigue, or overall functional status when using dronabinol compared to placebo.
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Background: Chronic dyspnoea and exercise impairment are common after acute pulmonary embolism (PE) but are not defined and quantified sufficiently to serve as outcomes in clinical trials. The planned project will clinically validate a novel method to determine discrete, clinically meaningful diagnoses after acute PE. The method uses an algorithm entitled SEARCH, for ymptom screen, xercise testing, rterial perfusion, esting echocardiography, onfirmatory imaging and aemodynamic measurements.

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Background: Sepsis mortality has remained unchanged for greater than a decade, and early recognition continues to be the most important factor in mortality outcome. Plasma resistin concentration is increased in sepsis, but its mechanism and clinical relevance is unclear. As one function, resistin interacts with toll-like receptor 4 in competition with lipopolysaccharide, a main component of the gram-negative bacterial cell wall.

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Excessive decrease in the flow of the late expiratory portion of a flow volume loop (FVL) or "flattening", reflects small airway dysfunction. The assessment of the flattening is currently determined by visual inspection by the pulmonary function test (PFT) interpreters and is highly variable. In this study, we developed an objective measure to quantify the flattening.

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Introduction: Chronic obstructive pulmonary disease (COPD) patients have poor sleep quality, longer time to sleep onset and frequent nocturnal awakenings. Poor sleep quality in COPD is associated with poor quality of life (QoL), increased exacerbations and increased mortality. Pulmonary rehabilitation (PR) improves functional status and QoL in COPD but effects on sleep are unclear.

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Article Synopsis
  • Independent stimulation of pulmonary artery baroreceptors in anesthetized animals triggers an increase in sympathetic nerve activity, but a direct causal relationship in humans had yet to be established.
  • A study with healthy lowlander participants at high altitude found that lowering pulmonary arterial pressure through nitric oxide inhalation led to a significant decrease in muscle sympathetic nerve activity (MSNA), suggesting that pulmonary baroreceptors play a role in sympathetic activation.
  • The findings highlight that the mechanism distinguishing pulmonary arterial influence on MSNA differs from the feedback reflex typically observed with other baroreceptors when systemic arterial pressure is reduced.
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Objective: The passive leg raising (PLR) maneuver has become standard practice in fluid resuscitation. We aim to investigate the precision and consistency of the PLR for determining fluid responsiveness in critically ill patients and healthy volunteers using bioreactance non-invasive cardiac output monitoring (NiCOM™, Cheetah Medical, Inc., Newton Center, Massachusetts, USA).

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Background: The role of noninvasive positive pressure ventilation (NIPPV) in acute asthma exacerbation is controversial. However, the outcome of NIPPV in obese patients with asthma during such exacerbation has not been well studied despite well-established relationship between obesity and asthma.

Study Question: Does body mass index (BMI) play a role in the outcome of NIPPV during an acute exacerbation and does it predict of the success or failure of NIPPV?

Study Design: The study was a retrospective analysis by design.

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Background: Myotonic dystrophy (DM) is an inherited progressive muscle disorder caused by defects in muscle proteins. As the incidence of this condition is low, not many are familiar with the multisystem involvement. At times, cardiac disease may even be the predominant manifestation in the form of arrhythmias, conduction defects, and cardiomyopathies.

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Acute myocardial infarction (MI) in young adults is rare. Clinicopathological conditions such as nephrotic syndrome, antiphospholipid syndrome, spontaneous coronary artery spasms or embolism can be attributed to such events. In this case report, we present a 30-year-old male who had his first MI at the age of 20 years.

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The "broken heart syndrome", or Takotsubo cardiomyopathy, is an acute cause of transient left ventricular systolic dysfunction characterized by abrupt onset of chest symptoms, ECG changes and a mild rise in myocardial enzymes mimicking acute myocardial infarction. This condition is more common in postmenopausal women and is typically preceded by an intense emotional or physical stress or an acute illness. A higher prevalence of anxiety disorders in patients with this syndrome have also been reported recently.

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Stroke is a major public health burden worldwide and is responsible for a large proportion of disability; and ranks third in the causation of morbidity and mortality. This disease although regarded as a disease of old age, it is not uncommon in younger population in developing countries..

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A retrospective study of ectopic pregnancy at Nepal Medical College Teaching Hospital between January 2001 to June 2006 was carried out to determine incidence, demographic features, clinical presentation, duration at presentation and treatment, and the management protocol. A total of 36 cases of ectopic pregnancy were treated giving the incidence of ectopic pregnancy of 10.2/1000 deliveries and 7.

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There are not sufficient studies on ECG in elderly population in Nepal. This study attempts to evaluate the findings of ECG in elderly population in Nepal. ECG recordings from 171 apparently healthy geriatric subjects aged above 60 yrs (Mean age 70.

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