BACKGROUND Real-time myocardial contrast echocardiography permits the detection of myocardial perfusion abnormalities during stress echocardiography, which may improve the accuracy of the test in detecting coronary artery stenoses. We hypothesized that this technique could be used after a bolus injection of the selective A2A receptor agonist regadenoson to rapidly and safely detect coronary art...

The aim of the present study was to compare the amount of motor block produced by different loading doses of ropivacaine and bupivacaine when delivered in a dilute solution with added opioid. Sixty-eight healthy term primigravid parturients were randomized to receive an initial bolus dose of 10 mL of 1 of the following: 0.25% bupivacaine (high bupivacaine), 0.25% ropivacaine (high ropivacaine),...

BACKGROUND In oncologic patients, the liver is the most common target for metastases. An accurate detection and characterization of focal liver lesions in patients with known primary extrahepatic malignancy are essential to define management and prognosis. OBJECTIVES To assess the diagnostic accuracy of the split-bolus multidetector-row computed tomography (MDCT) protocol in the characterizat...

BACKGROUND The dual-bolus protocol enables accurate quantification of myocardial blood flow (MBF) by first-pass perfusion cardiovascular magnetic resonance (CMR). However, despite the advantages and increasing demand for the dual-bolus method for accurate quantification of MBF, thus far, it has not been widely used in the field of quantitative perfusion CMR. The main reasons for this are that t...

Aneiros F, Gude F, Cortés J, Alvarez J, Atanassoff PG: A “new” automated bolus technique for continuous popliteal block: A prospective, randomized comparison with a continuous infusion technique. Anesth Analg 2008; 107:1433–7 11. Taboada M, Rodríguez J, Bermudez M, Amor M, Ulloa B, Aneiros F, Sebate S, Cortés J, Alvarez J, Atanassoff PG: Comparison of continuous infusion versus automated bolus ...

increases during the HS infusion. Corrected for multiple comparisons (FDR, p < 0.05). Fig. 2 Right insula time courses: CBF changes (relative to baseline) as a function of time in the right insula for the purely tonic stimulus (black) and the bolus stimulus (purple) (ref. 4). Smoothed and raw data shown. Acute vs. Tonic Muscular Pain: Changes in Cerebral Blood Flow as Imaged by Arterial Spin La...

Non-invasive detection of fluorescence from the optical tracer indocyanine green is feasible in the adult human brain when employing a time-domain technique with picosecond resolution. A fluorescence-based assessment may offer higher signal-to-noise ratio when compared to bolus tracking relying on changes in time-resolved diffuse reflectance. The essential challenge is to discriminate the fluor...

infiltration by the surgeon may be required, particularly of the carotid sheath. This should be considered a supplementary part of the technique rather than a failure requiring conversion to general anaesthesia. Sir,—I was interested to read the paper by Raucoules-Aime and colleagues [1] on perioperative blood glucose control in diabetics using bolus administration of insulin in place of a cont...