Invasive Health Dictionary

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Invasive: From 1 Different Sources

Tending to spread throughout body tissues; the term is usually applied to cancerous tumours or harmful microorganisms. In an invasive medical procedure, body tissues are penetrated by an instrument. (See also minimally invasive surgery and noninvasive.)
Health Source: BMA Medical Dictionary
Author: The British Medical Association

Minimally Invasive Surgery

Surgery using a rigid endoscope passed into the body through a small incision. Further small openings are made for surgical instruments so that the operation can be performed without a long surgical incision. Minimally invasive surgery may be used for many operations in the abdomen (see laparoscopy), including appendicectomy, cholecystectomy, hernia repair, and many gynaecological procedures. Knee operations (see arthroscopy) are also often performed by minimally invasive surgery.... minimally invasive surgery

Invasiveness

The ability of a microorganism to enter the body and to spread more or less widely throughout the tissues. The organism may or may not cause clinical symptoms.... invasiveness

Minimally Invasive Surgery (mis)

More popularly called ‘keyhole surgery’, MIS is surgical intervention, whether diagnostic or curative, that causes patients the least possible physical trauma. It has revolutionised surgery, growing from a technique used by gynaecologists, urologists and innovative general surgeons to one regularly used in general surgery, GYNAECOLOGY, UROLOGY, thoracic surgery, orthopaedic surgery (see ORTHOPAEDICS) and OTORHINOLARYNGOLOGY.

MIS is commonly carried out by means of an operating laparoscope (a type of ENDOSCOPE) that is slipped through a small incision in the skin. MIS now accounts for around 50 per cent

of all operations carried out in the UK. A small attachment on the end of the laparoscope provides an image that can be magni?ed on a screen, leaving the surgeon’s hands free to operate while his assistant operates the laparoscope. Halogen bulbs, ?breoptic cables and rod lenses have all contributed to the technical advancement of laparoscopes. Operations done in this manner include extracorporeal shock-wave LITHOTRIPSY for stones in the gall-bladder, biliary ducts and urinary system; removal of the gall-bladder; appendicectomy; removal of the spleen and adrenal glands; and thoracic sympathectomy. MIS is also used to remove cartilage or loose pieces of bone in the knee-joint.

This method of surgery usually means that patients can be treated on a day or overnight basis, allowing them to resume normal activities more quickly than with conventional surgery. It is safer and lessens the trauma and shock for patients needing surgery. MIS is also more cost e?ective, allowing hospitals to treat more patients in a year. Surgeons undertake special training in the use of MIS, a highly skilled technique, before they are permitted to use the procedures on patients. The use of MIS for hernia repair, colon surgery and repairs of duodenal perforations is under evaluation and its advantages will be enhanced by the development of robotic surgical techniques.... minimally invasive surgery (mis)


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