BACKGROUND AND STUDY AIMS Abdominal discomfort and bloating are common symptoms after colonoscopy. We aimed to compare the effects of direct rectal suction with insertion of a rectal tube on reducing abdominal symptoms after unsedated colonoscopy. PATIENTS AND METHODS Consecutive patients undergoing colonoscopy were randomized to have direct rectal suction or placement of a rectal tube immedi...

Background. The use of a suction drain in thyroid surgery is common practice in order to avoid hematomas or seromas. The aim of this study was to determine the efficacy of routine drainage after thyroid surgery. Methods. In this prospective randomized trial, 400 patients who underwent either a total thyroidectomy or lobectomy for thyroid disorders were randomly allocated to either the nondraina...

The suction muffler of a reciprocating compressor is used for reducing a noise produced by pressure pulsations. According to the shape, the suction muffler is classified into one-chamber type, two-chamber type, Helmholtz-resonator type, pipe-resonator type, and so on. These mufflers are used according to the characteristics of the frequency of compressor noise. In this study, four pole paramete...

We discuss long-time behaviour of the Hele-Shaw flow in R with surface tension and injection or suction in the origin, for domains that are small perturbations of balls. After rescaling, radially symmetric solutions become stationary. We study the stability of these solutions. In particular, we show that all liquid can be removed by suction if the suction point and the geometric centre coincide...

The one-step surgical procedure for dermal substitutes combined with topical negative pressure (TNP) has proven effective for treating deep skin defects with improved graft take. The primary mechanism by which TNP improves autograft take is unknown. Some studies suggest that TNP promotes the rapid angiogenesis of dermal substitutes, improving graft take. However, at the early stage of one-step ...

Commonly encountered difficulties during decannulation are tube dependency, bleeding, and mechanical problems with cuff, aspiration, pulmonary complications, tracheomalacia, scarring of the tracheostomy wound, inversion of wound margin in skin, tracheal stenosis and also migration of granulation tissue inside the trachea through the tracheostomy wound. Patients with traumatic quadriplegia follo...

The feeding kinematics, suction and hydraulic jetting capabilities of captive harbor seals (Phoca vitulina) were characterized during controlled feeding trials. Feeding trials were conducted using a feeding apparatus that allowed a choice between biting and suction, but also presented food that could be ingested only by suction. Subambient pressure exerted during suction feeding behaviors was d...

Commonly encountered difficulties during decannulation are tube dependency, bleeding, and mechanical problems with cuff, aspiration, pulmonary complications, tracheomalacia, scarring of the tracheostomy wound, inversion of wound margin in skin, tracheal stenosis and also migration of granulation tissue inside the trachea through the tracheostomy wound. Patients with traumatic quadriplegia follo...

BACKGROUND AND PURPOSE Preoperative embolization expands the spectrum of meningioma that can be operated on safely. Our goal was to achieve the distalmost loading of the vascular bed and confluent tumor necrosis with a fibrin glue preparation in the preoperative embolization of meningiomas. METHODS Between 1992 and 1997, 80 patients with a meningioma had diagnostic angiography with a standard...

The ontogeny of suction feeding performance, as measured by peak suction generating capacity, was studied in the common snook, Centropomus undecimalis. Suction pressure inside the buccal cavity is a function of the total expansive force exerted on the buccal cavity distributed across the projected area of the buccal cavity. Thus, the scaling exponent of peak suction pressure with fish standard ...