A 30-year-old woman with a normal first trimester Down syndrome screening attended our ultrasound unit for a 20-week scan. The most remarkable anomalies were the presence of a right aortic arch along with a dilated cavum septi pellucidi. In addition, the scan showed an atrioventricular canal and bilateral choroid plexus cysts. Fetal karyotype showed the existence of trisomy 21. A novel associat...

With the rapid development of information technology, the secrutiy problems of information systems are being paid more and more attention, so the Chinese government is carrying out information security classified protection policy in the whole country. Considering computer application systems are the key componets for information system, this paper analyzes the typical security problems in comp...

Background. The frontal recess area represents a challenge to ENT surgeons due to its narrow confines and variable anatomy. Several types of cells have been described in this area. The agger nasi cells are the most constant ones. The frontal cells, originally classified by Kuhn into 4 types, have been reported in the literature to exist in 20%-41% of frontal recesses. Aim of the Study. To ident...

Depressor features have been described for many varieties of Wu Chinese, from Shanghai south to the Ou varieties of Wenzhou. Acoustic tone sandhi data from the Chu variety of Qingtian refine the particulars of [±depressor]. Acoustic depressor features do not occur through the whole tone pattern, but do occur on syllables with voiceless initials and without initial consonants. No connection is f...

OBJECTIVES/HYPOTHESIS Objectives were as follows: 1) to define the variations of the uncinate process' superior attachment, 2) to study the diameter of the frontal sinus ostium, 3) to study the prevalence of the agger nasi cells, and 4) to evaluate the side-to-side variability of these structures. STUDY DESIGN A retrospective clinical study at a tertiary care center. METHODS One hundred for...

Effect of i.v. morphine (1-2 mg/kg) on blood pressure changes evoked by sciatic nerve stimulation (SNS) were studied in chloralose anaesthetised cats. SNS gave a depressor, pressor or a biphasic BP response generally linked to the parameters of stimulation. Morphine produced marked attenuation of depressor and some facilitation of pressor response, suggesting a possible reciprocal relationship ...

The upper airway is a complicated structure that is usually widely patent during inspiration. However, on inspiration during certain physiological and pathophysiological states, the nares, pharynx, and larynx may collapse. Collapse at these locations occurs when the transmural pressure (Ptm) at a flow-limiting site (FLS) falls below a critical level (Ptm'). On airway collapse, inspiratory airfl...