dissection

[dĭ-sek´shun]

1. the act of dissecting.

2. a part or whole of an organism prepared by dissecting.

aortic dissection a dissecting aneurysm of the aorta; the usual site is the thoracic aorta. There are two types, classified according to anatomical location: Type A involves the ascending aorta; Type B originates in the descending aorta. Acute aortic dissection is often fatal within one month of onset. Surgical treatment may be delayed in aneurysms involving the descending aorta until the blood pressure has been controlled and edema and friability of the aorta are diminished. The usual course of treatment for an aneurysm of the ascending aorta is immediate surgery. The surgical procedure for either type is aimed at either repairing the intimal tear or removing the affected portion of the aorta. This may be done by suturing the separated aortic layers back together or by removing the damaged section of the aorta and replacing it with a synthetic graft.

axillary dissection (axillary lymph node dissection) surgical removal of axillary lymph nodes, done as part of radical mastectomy.

blunt dissection separation of tissues along natural lines of cleavage, by means of a blunt instrument or finger.

lymph node dissection lymphadenectomy.

lymph node dissection, retroperitoneal (RPLND) retroperitoneal lymphadenectomy.

sharp dissection separation of tissues by means of the sharp edge of a knife or scalpel, or with scissors.

The separation of tissues—dissection—along fascial planes with a blunt instrument. Blunt dissection preserves locoregional architecture and structural integrity of nerves, vessels, and lymph nodes

blunt dissection

Surgical technique The separation of tissues–dissection along fascial planes with a blunt instrument; BD preserves locoregional architecture and structural integrity of nerves, vessels, and lymph nodes. See Dissection.

blunt dis·sec·tion

(blŭnt di-sekshŭn)

Separating or incising tissue using a dull object, such as one's fingers or the opening action of a pair of scissors.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

blunt dissection

A technique in surgery or anatomical dissection in which tissue planes are separated or opened and underlying structures exposed without cutting. Blunt dissection often involves the use of scissors in an opening, rather than a closing, mode. The closed tips are pushed into tissue and then separated so as to split tissue planes.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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References in periodicals archive

By using the open technique (an incision on the skin that will admit 2 fingers, and blunt dissection of the muscles and pleura without use of a trocar), a finger sweep of the chest cavity will avoid penetration of any herniated abdominal organs or penetration of lung adherent to the chest wall.

Complications of tube thoracostomy for chest trauma

With this background, a modification of the U" technique was developed by the author.[*] Unlike the traditional "U" technique, (1) blunt dissection opens a path to the implants, (2) the grasp is not just at the tip but can be anywhere along the shaft of the implant, and (3) a technique similar to NSV dissection is used to free the implant from its tissue envelope.

The 'modified U' technique: a refined method of Norplant removal

Hence, we use the third tracheal ring as a landmark, and careful blunt dissection was employed to expose the RLN through the layers of the fibers 0.3 cm from the lateral surface of the tracheal ring.

A New Technique for Identifying the Recurrent Laryngeal Nerve: Our Experience in 71 Patients

Under general anesthesia (as described above), the skin over the VAP was incised to expose the VAP and allow blunt dissection to free it from the surrounding fascia.

Use of a vascular access port for antibiotic administration in the treatment of pododermatitis in a chicken

Under general anesthesia, the adhesions of labia majora were separated with blunt dissection.

Isolated labial fusion as a cause of acute urinary retention in early adolescent period

Starting the procedure at the vesical-prostatic junction (after the dissection of vas deferens, seminal vesicles and Denonvillier's fascia), we found that the blunt dissection of the posterior wall of the prostate can be better controlled until the apex of the prostate is reached.

Randomized trial comparing an anterograde versus a retrograde approach to open radical prostatectomy: results in terms of positive margin rate

Further blunt dissection around the pedicle may be required to improve mobilization (figure 2, A and B).

The postauricular island flap (flip-flop flap)

A 2 cm right submandibular skin incision was made down to the subplatysmal layer, followed by blunt dissection towards the right submandibular fossa.

Superficial cervical plexus block combined with auriculotemporal nerve block for drainage of dental abscess in adults with difficult airways

The paravesical and pararectal spaces are then developed by retracting the umbilical ligament (the superior vesicle artery) medially and performing blunt dissection between this artery and the pelvic side wall.

Robotic technology overcomes previous limitations

Operative injury of the large or small bowel often occurs during sharp or blunt dissection, performed during laparoscopy using accessory mechanical or energy devices.

How to avoid injury to bowel during laparoscopy: be reluctant to perform laparoscopy in a patient known to have significant adhesions. Also, be aware of risk of injury at trocar entry and mindful of how you use energy devices

It continues with the laparoscopic radical excision of deep pelvic endometriosis using traditional surgical techniques such as blunt dissection and bipolar coagulation.

Nerve-sparing technique reduces complications in deep pelvic endometriosis