Morteza Tavakol

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Coronary angiography and heart catheterization are invaluable tests for the detection and quantification of coronary artery disease, identification of valvular and other structural abnormalities, and measurement of hemodynamic parameters. The risks and complications associated with these procedures relate to the patient's concomitant conditions and to the(More)
STUDY OBJECTIVES To compare bronchodilation, chronotropic effects, and side effects of the same dose of nebulized albuterol when given by either intermittent or continuous administration. DESIGN A randomized assignment of patients to one of the two methods of albuterol nebulization. SETTING Adult emergency department in an urban public hospital. TYPE(More)
BACKGROUND Atrial fibrillation (AF) occurs frequently after coronary bypass grafting and valve operations. Brain natriuretic peptide (BNP) has been shown to predict recurrence of AF in congestive heart failure. It is a potential biomarker for preoperative risk stratification for development of AF in at-risk patients. METHODS A total of 398 consecutive(More)
BACKGROUND Current guidelines define cardiac troponin I (TnI) as an indicator of necrosis when the concentration exceeds the 99% upper limit of a healthy reference population, a reference value near the assay's lowest detectable level. We assessed the utility of a modified TnI cutoff point derived from a population at low risk for coronary artery disease(More)
Forty-four adult patients with acute asthma were treated with albuterol at a rate of 15 mg/h over 2 h. Analysis of covariance showed a significantly higher baseline adjusted mean for both percent predicted forced expiratory volume in 1 s (PFEV1) (p = 0.045) and percent predicted forced vital capacity (PFVC) (p = 0.022) at 50 and 110 min for the patients who(More)
BACKGROUND Fiber atrophy and an increase in the percentage of fast fibers have been observed in Rhesus leg muscles after spaceflight. HYPOTHESIS Hypergravity will result in muscle fiber hypertrophy and an increase in the percentage of slow fibers. METHODS Open muscle biopsies were obtained from Rhesus soleus, medial gastrocnemius (MG), and tibialis(More)
CONTEXT Over the past three decades, industry sponsored research expanded in the United States. Financial incentives can lead to potential conflicts of interest (COI) resulting in underreporting of negative study results. OBJECTIVE We hypothesized that over the three decades, there would be an increase in: a) reporting of conflict of interest and source(More)
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