3,4) The pathogenesis of varicocele is retrograde flow
into the spermatic vein.
The In-Line Check Valve is a DEHP-free, acrylic valve featuring a Latex Free silicone diaphragm that allows flow in one direction and will prevent retrograde flow
(back pressure tested to 45 psi).
The retrograde flow
from the LCA to the pulmonary artery is well depicted on MRI and is seen as a jet of blood flowing into the pulmonary artery.
Increasing circuit flows would most likely have made left heart distension worse by increasing mean arterial pressure and promoting retrograde flow
through the aortic valve, and was therefore not attempted.
Unlike other needleless sites that allow for bidirectional flow, site 80189 incorporates a one-way injection-only valve designed to prevent retrograde flow
This system of veins is valveless, thereby permitting retrograde flow
and vascular dilation.
In addition, side effects from retrograde flow
, such as nasal irritation and nosebleeds, are minimized with the pulse-wave delivery system.
Persistent arteriovenous shunting and extravasation were present at the skull base from retrograde flow
through the intracranial right ICA (Figure 2).
The Military Surface Deployment and Distribution Command's Lean Six Sigma (LSS) staff combined forces with the Army Sustainment Command's Continuous Process Improvement office June 2008, to improve the ARI retrograde flow
of equipment from OIF to CONUS source-of-repair (SOR) facilities.
This would allow metastases to bypass the lungs and spread to the head and neck by way of a retrograde flow
through the valveless plexus.
At one base the second retrograde flow
had no interface with the flight service center (FSC), except to exchange improperly addressed packages.
Symptoms such as the six used in the study to select subjects--chronic dry hacking cough, globus sensations, hoarseness, nocturnal cough, sore throat, and throat clearing--are generally attributed to retrograde flow
of gastric contents, but diagnosis and management of supraesophageal reflux is difficult because of a lack of standardized criteria.