classification of surgery according to magnitude and extend,according to purpose,according to ergency?

Answer 1

Magnitude and Extent:
>>Major Surgery - it includes invasive procedures and involves major organs with an expected considerable blood loss and some expected complications.
>>Minor Surgery - less invasive and no major organs involved and blood loss expected and complications are minimal.

Purpose:
>>Therapeutic Surgery - to remove a diseased organ or any part of an organ that causes the disorder or disease as the treatment.
>> Diagnostic Surgery - to take a part of an organ for finding out the diagnosis.
>>Exploratory Surgery - finding out any clues that causes the disorder.
>>Palliative Surgery - to perform some surgical intervention that will relieve the symptoms of the disorders.
>>Reconstructive Surgery- to reconstruct any deformed or altered part of the body.
>>Cosmetic Surgery- for aesthetic purposes.

URGENCY:
>>Emergency - surgery done at once or immediately to save life.
>>Urgent - surgery done as soon as possible within a specified time.
>>Elective - does not imply any urgency and can be done according to time planned suitable for the schedule of the person and the surgeon.

You may be interested to find out more from this link:
http://en.wikipedia.org/wiki/Surgery