Obstruction may refer to:
Places
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Obstruction Island, in Washington state
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Obstruction Islands, east of New Guinea
Medicine
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Obstructive jaundice
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Obstructive sleep apnea
Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder and is characterized by recurrent episodes of complete or partial obstruction of the upper airway leading to reduced or absent breathing during sleep. These episo ...
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Airway obstruction
Airway obstruction is a blockage of respiration in the airway that hinders the free flow of air. It can be broadly classified into being either in the upper airway (UPA) or lower airway (LOA).
Airway obstruction is a life-threatening condition ...
, a respiratory problem
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Recurrent airway obstruction
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Bowel obstruction
Bowel obstruction, also known as intestinal obstruction, is a mechanical or functional obstruction of the intestines which prevents the normal movement of the products of digestion. Either the small bowel or large bowel may be affected. Signs a ...
, a blockage of the intestines.
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Gastric outlet obstruction
Gastric outlet obstruction (GOO) is a medical condition where there is an obstruction at the level of the pylorus, which is the outlet of the stomach. Individuals with gastric outlet obstruction will often have recurrent vomiting of food that has ...
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Distal intestinal obstruction syndrome
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Congenital lacrimal duct obstruction
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Bladder outlet obstruction
Politics and law
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Obstruction of justice
Obstruction of justice, in United States jurisdictions, is an act that involves unduly influencing, impeding, or otherwise interfering with the justice system, especially the legal and procedural tasks of prosecutors, investigators, or other gov ...
, the crime of interfering with law enforcement
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Obstructionism
Obstructionism is the practice of deliberately delaying or preventing a process or change, especially in politics.
As workplace aggression
An obstructionist causes problems. Neuman and Baron (1998) identify obstructionism as one of the three dim ...
, the practice of deliberately delaying or preventing a process or change, especially in politics
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Emergency Workers (Obstruction) Act 2006
The Emergency Services (Obstruction) Act 2006 (c 39) is an Act of the Parliament of the United Kingdom. It is intended to reduce the instances of obstruction of, or assaults on, emergency service personnel.
Sections 1 to 6 came into force on 2 ...
Science and mathematics
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Obstruction set in
forbidden graph characterization
In graph theory, a branch of mathematics, many important families of graphs can be described by a finite set of individual graphs that do not belong to the family and further exclude all graphs from the family which contain any of these forbidde ...
s, in the study of
graph minor
In graph theory, an undirected graph is called a minor of the graph if can be formed from by deleting edges and vertices and by contracting edges.
The theory of graph minors began with Wagner's theorem that a graph is planar if and only i ...
s in
graph theory
In mathematics, graph theory is the study of ''graph (discrete mathematics), graphs'', which are mathematical structures used to model pairwise relations between objects. A graph in this context is made up of ''Vertex (graph theory), vertices'' ( ...
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Obstruction theory In mathematics, obstruction theory is a name given to two different mathematical theories, both of which yield cohomological invariants.
In the original work of Stiefel and Whitney, characteristic classes were defined as obstructions to the e ...
, in mathematics
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Propagation path obstruction
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Single Vegetative Obstruction Model
Sports
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Obstruction (baseball)
In baseball, obstruction is when a fielder illegally hinders a baserunner running within the basepath. Baserunners are generally permitted to run from base to base without being physically blocked or hindered by a fielder. The only time that a fi ...
, when a fielder illegally hinders a baserunner
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Obstructing the field
Obstructing the field is one of the ten methods of dismissing a batsman in the sport of cricket. Either batsman can be given out if he wilfully attempts to obstruct or distract the fielding side by word or action. It is Law 37 of the Laws of cr ...
See also
* ''
The Five Obstructions'', a 2003 film
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USS ''Obstructor'', an American minelayer ship used in World War II
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