### activity | occlusion:

Thrombosis
* blood clot that occurs in either a vein or an artery.
* can occur without history of umbilical catheter insertions, as in two of our patients
  - predate the appearance of the myeloproliferative syndrome by months to years
* condition in which blood clots form and then move through the blood stream.
  - blockage by a thrombus, or clot, that has built up on the wall of a brain artery
  - illnesses
  - known to be a complication of cancer and the treatment of cancer
* is the basis of a number of disorders
  - formation of unnecessary blood clots inside blood vessels
  - treated with anticoagulant drugs, such as heparin or coumadin
  - when a blood clot forms
* major cause of life-threatening cardiovascular diseases.
* occurs most commonly in a sclerotic vessel with a narrow lumen or a calcified plaque
  - frequently in blood vessels already compromised by atherosclerosis
* remains the leading cause of death in the United States.
* significant concern when artificial surfaces are implanted in contact with blood.

### activity | occlusion | thrombosis:

Cerebral thrombosis
* blood clot in an artery to the brain, which can cause a stroke.
* is managed as it is in other contexts
  - the most common type of stroke
  - thrombosis

Coronary thrombosis
* blood clot in the arteries supplying the heart.
* is thrombosis

Venous thrombosis
* can occur in healthy as well as sick individuals.
* is common and begins in mid-late teenage years.
* is the medical term for blood clots in the veins
  - more common and increases the chance of paradoxical embolus
* occurs most frequently in the deep veins of the lower extremities
  - often in the legs or pelvis

Vascular occlusion
* Most vascular occlusions are either thrombotic or embolic.
* can lead to ulcerations, necrosis and lipophagic granulomas.

### activity:

Occupation
* Many occupations have an increased risk for developing lung cancer
  - professional organizations that promote, serve, and represent their members
  - require people to be outdoors at least part of the time
* Some occupations have high unemployment rates
  - require services to be performed off premises
  - requiring work experience are supervisory or managerial occupations
* are activities
  - social control
  - time periods
* can lead to abuse of human rights and confiscation of property.
* characterizes the dignity and uniqueness of humanity.
* comes from the verb to occupy, to do.
* concrete term for continuity.
* depend on factors.
* develop communities of their own with unique language, customs, and folklore.
* do exist in which a person with a disability can find employment.
* have education requirements
  - positive education requirements
  - restrictions
* involve direct exposure
* is an activity
  - rape on a national scale
* key indicator of socio-economic status.
* military word.
* refers to respondent's occupation
  - tenancies where rent is paid to the owner of the property
* require workers.

### activity:

Operation
* Some operations can also injure the nerves or blood vessels responsible for erections.
  - data processing
  - medical procedures
  - processes
  - specific tasks that define how a behavior is carried out within the system
  - surgery
  - the competitive application of military force to achieve the objectives of strategy
  - transactions
* assess effects.
* change life.
* depend on actions.
* describes the core activity of any business.
* focus on products.
* have abnormal reaction
* include functions
* incorporate aeration technology
* involve materials
  - solid materials
  - toxic materials
  - the management of the production of goods and services to be exchanged
  - where services are delivered, where goods are produced and where most people work
* lead to consequences.
* receive attention
  - close attention
* require better performance
  - care
  - expertise
  - skills
  - special care
  - substances
* result in requirements.
* take places.