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| http://dx.doi.org/10.1016/j.jcin.2016.05.047 | DOI Listing |
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Exercise-induced arterial hypoxaemia in patients with heart failure with preserved ejection fraction.
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Institue for Exercise and Environmental Medicine, Texas Presbyterian Hospital, Dallas, TX, USA.
Some patients with heart failure with preserved ejection fraction (HFpEF) have demonstrated evidence of exercise-induced arterial hypoxaemia (EIAH). However, EIAH was not quantified using , , and measurements as previously conducted in healthy adults nor was EIAH quantified alongside simultaneous measurements of pulmonary vascular pressures, cardiorespiratory responses, or dyspnoea on exertion (DOE) in these patients. Given the effects of hypoxaemia on pulmonary vasoconstriction, cardiorespiratory responses, and DOE, we tested the hypothesis that patients with HFpEF and EIAH (EIAH) would demonstrate higher pulmonary vascular pressures, worse oxygen uptake, and greater DOE compared with patients without EIAH (EIAH).
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BACKGROUND Treatment of metastatic vasoactive intestinal peptide tumors (VIPoma) is challenging and requires a careful multidisciplinary approach to achieve optimal disease control. We present a case of metastatic VIPoma with recurring episodes of life-threatening diarrhea necessitating multiple intensive care unit (ICU) admissions. CASE REPORT A 54-year-old man presented with severe watery diarrhea and metabolic acidosis with MRI showing a necrotic pancreatic body mass, and multiple liver lesions.
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Background: Identifying haemodynamic factors associated with thin-walled regions (TWRs) of intracranial aneurysms is critical for improving pre-surgical rupture risk assessment. Intraoperatively, these regions are visually distinguished by a red, translucent appearance and are considered highly rupture prone. However, current imaging modalities lack the resolution to detect such vulnerable areas preoperatively.
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