shunting


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shunting

The bypassing of alveoli by blood circulating through the lungs.
 
Aetiology
Atelectasis, portal hypertension, small airway obstruction, smoke inhalation injury.
 
Diagnosis
Hypoxaemia that only partially improves with high inspired O2 concentrations (e.g., arterial O2 tension/PaO2 < 200 mm Hg for inspired O2 concentration FIO2 = 100%).

shunting

Lung physiology The bypassing of alveoli by blood circulating through the lungs Etiology Atelectasis, portal hypertension, small airway obstruction, smoke inhalation injury Diagnosis Hypoxemia that only partially improves with high inspired O2 concentrations–eg, arterial O2 tension/PaO2 < 200 mm Hg for inspired O2 concentration FIO2 = 100%

shunting

A condition in which blood, by going through an abnormal pathway or bypass, does not travel its normal route. It may occur when an arteriovenous fistula forms or in congenital anomalies of the heart in which the blood passes from the right atrium or ventricle directly to the left atrium or ventricle respectively, through a defect in the wall (septum) that normally separates the atria and ventricles.
Synonym: blood shunting
References in periodicals archive ?
Comparison ofsimultaneous shunting to delayed shunting in infants with myelomeningocele in terms ofshunt infection rate.
Therefore, we performed a meta-analysis of all RCTs concerning TIPS and surgical shunting (including DSRS, PCS, and HGPCS) to evaluate the optimal management for patients with portal hypertension.
Effect of temporary shunting on extremity vascular injury: An outcome analysis from the Global War on Terror vascular injury initiative.
The others dogs (17/20) or 85% presented elevated blood flow velocity at main portal vein before the shunting vessel origin when comparing at the site after the shunting vessel origin (Figure 2).
However, because INPH is responsible for less than 1% of all dementias, improvement in mental status as a result of VP shunting may be minimal (Miele, Bendok, Bloomfield, Ondra, & Bailes, 2004).
Clinically, the severity of symptoms depends on the defect size, the amount of left-to-right shunting, pulmonary hypertension, and the coexistence of other cardiac diseases like pulmonary stenosis or aortic insufficiency.
This shunting, like digestion, persists for about 10 days, she says.
Cerebrospinal fluid shunting is the most common neurosurgical procedure in the pediatric population.
Though not all patients respond well, many experience measurable clinical improvement from shunting CSF to another location in the body where it can be absorbed, (2) most commonly the peritoneum.
In addition, by shunting the sac via this approach, we can avoid a cerebrospinal fluid (CSF) leak into the middle ear and eustachian tube.
The Strata valve, a grand prize winner of Design News magazine's 2001 "Excellence in Design Award," marks Medtronic Neurosurgery's latest innovation in hydrocephalic shunting, a technique for draining excess cerebrospinal fluid from the brain.