BACKGROUND AND PURPOSE 4D DSA allows viewing of 3D DSA as a series of time-resolved volumes of a contrast bolus. There is no comparison of the accuracy of the anatomic information provided by 4D DSA with that available from conventional 2D and 3D DSA. Our purpose was to make this comparison by using a canine model. MATERIALS AND METHODS 2D, 3D, and 4D DSA acquisitions were performed in 5 cani...

CONTEXT During swallowing, boluses stimulate sensory receptors of the oral, pharyngeal, laryngeal, and esophageal regions. Sweet and tasteless foods are more acceptable for swallowing than bitter foods. A bitter bolus is unpleasant for most subjects. Our hypothesis was that the ingestion of a bitter bolus might alter the oral behavior, pharyngeal and esophageal transit when compared to a sweet ...

background: considering the importance of using more appropriate imaging technique for accurate diagnosis of pulmonary thromboembolism (pte) with less side eff ects, we aimed to evaluate the quality of pulmonary 64-multidetector computed tomographic (mdct) angiography in pregnant and postpartum women with suspected pte in isfahan. materials and methods:in this descriptive study, radiological fi...

Introduction Dysphagia (swallowing abnormalities) is a clinical symptom commonly associated with stroke, multiple sclerosis, cancer and other diseases that impede normal function of oropharyngeal nerves and muscles. Modified Barium Swallow (MBS) studies provide a 2D visualization of the bolus transport mechanisms which is crucial for treatment and diagnosis of dysphagia. We present a 3D biomech...

BACKGROUND The esophagus has a different response in relation to the characteristics of a swallowed bolus. Bolus viscosity and body position may affect esophageal contraction and transit. Objectives To investigate the effect of bolus viscosity and body position on esophageal contraction, transit and perception. METHODS Esophageal contraction, transit and perception of transit were evaluated i...

BACKGROUND In this randomized, double-blind study, the authors compared the effectiveness of a sequential epidural bolus (SEB) technique versus a standard continuous epidural infusion (CEI) technique of local anesthetic delivery. Both techniques used the same hourly dose of local anesthetic. METHODS Sixteen gynecologic patients undergoing abdominal surgery received postoperative epidural anal...

Abstract Background Pain control is a vital component of enhanced recovery programmes for patients undergoing an oesophagectomy. Multimodal analgesia using intrathecal diamorphine and local anaesthetic infusion catheters into the paravertebral space rectus sheath increasingly utilised. can provide comparable pain relief while potentially reducing side effects associated with thoracic epidurals....

Step 1: Eligibility-The eligibility criteria for patients with acute ischemic stroke within 3 hours of symptom onset include: • An adult (> 18 years of age) • Exclusion of intrancranial hemorrhage by an imaging technique sensitive for the presence of hemorrhage • Arrives at the emergency department in time to be treated within 3 hours of symptom onset • The recommended dose of IV tPA is 0.9 mg/...

The effects of intravenous lidocaine on the refractory periods of the atrium, AV node and right ventricular myocardium were studied using His bundle recordings and the extrastimulus technique with and without atrial and ventricular pacing. The drug was administered in an intravenous bolus dose of 1 mg/Kg followed by an infusion of 100 micrograms/Kg/min. The AH, HV intervals and resting sinus cy...