PURPOSE To study the influence of the transient elevation of intraocular pressure during suction in laser-assisted in situ keratomileusis (LASIK) on the retinal nerve fiber layer (RNFL) thickness both in microkeratome assisted and femotsecond (FS) LASIK. PATIENTS AND METHODS An interventional case series that included 40 eyes suffering from myopia who were candidates for LASIK. All underwent ...

Successful prey capture by aquatic suction feeders depends on the ability of the predator to generate a flow of water external to the mouth that overcomes any movements and forces that the prey uses to resist the suction flow. Elucidating the nature and magnitude of these forces is a key to understanding what limits suction feeding performance. We identify three potential forces produced by the...

We present an analysis of prey capture functional morphology in eels by comparing two species of moray eels, Muraena retifera and Echidna nebulosa (Family Muraenidae), to the American eel Anguilla rostrata (Family Anguillidae). The skulls of both moray species exhibited extreme reductions of several prominent components of the suction-feeding mechanism, including the hyoid bar, the sternohyoide...

Background: In the context of today’s critical care, many patients require prolonged intubation and tracheostomy care. Though these are life-saving procedures, they are not totally devoid of complications. Suctioning of secretions via the ET tube/tracheostomy tube with a suction catheter is associated with trauma to the passages owing to the structure and material of catheters. To avoid the tra...

Herpes simplex virus (HSV) infection commonly causes "cold sores" (HSV type 1 [HSV-1]) and genital herpes (HSV-1 or HSV type 2 [HSV-2]); HSV infection in newborns can result in death or permanent disability. During November 2000-December 2011, a total of 11 newborn males had laboratory-confirmed HSV infection in the weeks following out-of-hospital Jewish ritual circumcision, investigators from ...

This study describes the mechanical role that cranial sutures play in fish during feeding. The long-term goal of our work is to establish relationships between suture form and function, so that functional inferences can be made from suture morphology in fossil taxa. To this end, strain gauges were surgically implanted across selected sutures in the skull roof of four individuals of Polypterus e...

A significant problem with most field dental units is that their suction is too weak to effectively remove debris from the mouth. The purpose of this study was to determine the minimum clinically acceptable suction level for routine dentistry. A vacuum pump was connected to a high-volume dental evacuation line in a simulated clinical setting and different suction airflow rates were evaluated by...

(1) Lung function should be adequate and stable before transfer. (2) Humidification of inspired air should be adequate before and during transport, particularly for patients with an endotracheal tube or tracheostomy. If secretions are sticky 2 ml ofwarm saline can be passed down the endotracheal tube or tracheostomy tube at frequent intervals. (3) Supplemental oxygen should be available. (4) Pa...

orthopaedic procedures. In the unlikely event of contamination of the system, deep wound infection could occur, jeopardising the operation. We have prospectively studied 50 patients who underwent elective and orthopaedic trauma procedures during which a suction system was used. At the end of each procedure the suction catheter tip was sent for culture and microbiology. The suction tips showed b...

Tracheobronchial suctioning is an essential part of routine care for mechanically ventilated patients. Closed, rather than open, suction catheters are preferred for their advantages, which include minimizing risk of hypoxemia and containment of potentially infected secretions during suctioning.1,2 A closed-suction catheter is situated between the endotracheal tube (ETT) and the Y-piece of the b...