Obstruction may refer to:

Places

Obstruction Island Obstruction Island is one of the San Juan Islands in San Juan County, Washington, United States. It lies off the southeast tip of Orcas Island, between it and Blakely Island. Obstruction Island has a land area of 0.882 km² (0.3406 sq mi, or 2 ...

, in Washington state *

Obstruction Islands The Obstruction Islands are an archipelago east of New Guinea island, located within Milne Bay Province in the southeastern region of Papua New Guinea. Geography The islands are located between the Eastern Cape of New Guinea and Nuakata Island. ...

, east of New Guinea

Medicine

* Obstructive jaundice *

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 ...

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 **

Recurrent airway obstruction Recurrent airway obstruction, also known as broken wind, heaves, wind-broke horse, or sometimes by the term usually reserved for humans, chronic obstructive pulmonary disease or disorder (COPD) – it is a respiratory disease or chronic conditio ...

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 blockage of the intestines. *

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 ...

* Distal intestinal obstruction syndrome *

Congenital lacrimal duct obstruction Nasolacrimal duct obstruction is the obstruction of the nasolacrimal duct and may be either congenital or acquired. Obstruction of the nasolacrimal duct leads to the excess overflow of tears called epiphora. Sign and symptoms Excessive tear ...

Bladder outlet obstruction Bladder outlet obstruction (or obstructive uropathy) occurs when urine is unable to flow from the kidneys through the ureters and out of the Urinary bladder, bladder through the urethra. Decreased flow of urine leads to swelling of the urinary tra ...

Politics and law

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 *

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 * Emergency Workers (Obstruction) Act 2006

Science and mathematics

Obstruction set Obstruction may refer to: Places * Obstruction Island, in Washington state * Obstruction Islands, east of New Guinea Medicine * Obstructive jaundice * Obstructive sleep apnea * Airway obstruction, a respiratory problem ** Recurrent airway o ...

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 '' graphs'', which are mathematical structures used to model pairwise relations between objects. A graph in this context is made up of '' vertices'' (also called ''nodes'' or ''points'') which are conn ...

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 ...

, in mathematics *

Propagation path obstruction In telecommunication, a propagation path obstruction is a man-made or natural physical feature that lies near enough to a radio path to cause a measurable effect on path loss, exclusive of reflection effects. An obstruction may lie to the side, ...

** Single Vegetative Obstruction Model

Sports

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 f ...

, when a fielder illegally hinders a baserunner * Obstructing the field

Places

Medicine

Politics and law

Science and mathematics

Sports

See also