OBJECTIVE To determine the usefulness of pneumoesophagography, compared with that of survey radiography, for characterization of esophageal pathological changes in dogs with endoscopically confirmed intraluminal Spirocerca lupi nodules in the caudal portion of the esophagus. DESIGN Diagnostic test evaluation. ANIMALS 30 dogs with endoscopically confirmed spirocercosis. PROCEDURES Dorsoven...

This study investigated the effects of reclined backrest angles on cognitive and psychomotor tasks during exposure to vertical whole-body vibration. Twenty participants were each exposed to three test stimuli of vertical vibration: 2–8 Hz; 8–14 Hz and 14– 20 Hz, plus a stationary control condition whilst seated on a vibration platform at five backrest angles: 0° (recumbent, supine) to 90° (upri...

BACKGROUND Nutritional deficits are almost universal in Low-Birth Weight babies. Zinc is essential for normal infant growth and its supplementation assists growth probably through insulin-like growth factor-1. AIM This double-blind randomized-controlled trial aimed at evaluating the role of zinc in catch-up growth of low-birth-weight infants and investigating its proposed mediator. MATERIAL...

Two patients with severe postural hypotension associated with upper motor neuron and cerebellar impairment (Shy-Drager syndrome) have been studied. Head-up tilt and lower body negative pressure application caused marked falls in arterial pressure; in one patient, paradoxical vasodilatation was observed. Ice application did not increase arterial pressure or calculated forearm vascular resistance...

Plasma renin activity (PRA) of patients with Parkinson's disease was measured in recumbency, upright position, and after frusemide administration. The results show that the renin responses to both stimuli are significantly reduced as compared with those obtained in a group of normal subjects, while recumbent PRA levels of Parkinsonism patients are not significantly lower than those found in rec...

1. Labetalol, a compound with both alpha- and beta-adrenoreceptor-blocking actions, was given intravenously (1-5-2-0 mg/kg) in twenty recumbent hypertensive patients. 2. There was a rapid reduction in systolic and diastolic pressures in all, maintained up to 24 h in some subjects. 3. Severe hypotension was not seen in recumbent subjects, but postural hypotension was common. 4. Labetalol caused ...

UNLABELLED This study investigated the effects of reclined backrest angles on cognitive and psycho-motor tasks during exposure to vertical whole-body vibration. Twenty participants were each exposed to three test stimuli of vertical vibration: 2-8 Hz; 8-14 Hz and 14-20 Hz, plus a stationary control condition whilst seated on a vibration platform at five backrest angles: 0° (recumbent, supine) t...

1. We studied the effect of oral prazosin on blood pressure, plasma active renin and angiotensin II in 16 recumbent hypertensive patients between 09.00 and 12.00 hours. 2. In untreated patients there were no significant changes in blood pressure, plasma active renin or angiotensin II during the 3 h period. 3. After an initial dose of prazosin (2 mg) there was a significant fall in recumbent blo...

PRIMARY OBJECTIVE Chiari malformation is defined as herniation of the cerebellar tonsils through the foramen magnum, also known as cerebellar tonsillar ectopia (CTE). CTE may become symptomatic following whiplash trauma. The purpose of the present study was to assess the frequency of CTE in traumatic vs non-traumatic populations. STUDY DESIGN Case-control. METHODS AND PROCEDURES Cervical MR...

This study investigated the effects of reclined backrest angles on cognitive and psychomotor tasks during exposure to vertical whole-body vibration. Twenty participants were each exposed to three test stimuli of vertical vibration: 2–8 Hz; 8–14 Hz and 14– 20 Hz, plus a stationary control condition whilst seated on a vibration platform at five backrest angles: 0° (recumbent, supine) to 90° (upri...