François Haas

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We assessed the effects of naloxone, an opioid antagonist, on exercise capacity in 13 men and 5 women (mean age = 30.1 yr, range = 21-35 yr) during a 25 W/min incremental cycle ergometer test to exhaustion on different days during familiarization trial and then after 30 mg (iv bolus) of naloxone or placebo (Pl) in a double-blind, crossover design. Minute(More)
PURPOSE To assess the effects of horticultural therapy (HT) on mood state and heart rate (HR) in patients participating in an inpatient cardiac rehabilitation program. METHODS Cardiac rehabilitation inpatients (n = 107) participated in the study. The HT group consisted of 59 subjects (34 males, 25 females). The control group, which participated in patient(More)
BACKGROUND Chronotropic incompetence (CI) is often seen in subjects with chronic congestive heart failure (CHF). The prevalence of CI, its mechanisms and association with beta-blocker use as well as exercise capacity have not been clearly defined. METHODS AND RESULTS Cardiopulmonary exercise tolerance testing data for 278 consecutive patients with(More)
Due to methodological difficulties related to the small size, variable distribution of hippocampal arteries, and the location of the hippocampus in the proximity of middle cranial fossa, little is known about hippocampal blood flow (HBF). We have tested the utility of a pulsed arterial spin labeling sequence based on multi-shot true fast imaging in steady(More)
Differential efficacy of immediate-release metoprolol tartrate and carvedilol in the treatment of congestive heart failure remains a subject of ongoing debate. The degree of beta1-blockade can be assessed by percentage reduction of exercise heart rate. Twelve healthy subjects underwent symptom-limited cardiopulmonary exercise testing repeated weekly and 2(More)
We present a necrosis of the big toe in a 20-year-old woman with an ingrowing toenail after wedge-shaped excision in the big toe. The reason for the necrosis was a tourniquet that was left in place after the operation. The ischemia, which lasted for 2 days, resulted in subtotal necrosis of the big toe. Six weeks after the operation the patient underwent(More)