Laparoscopic Adrenalectomy: A General Overview By Taylor Baldwin The University of Kentucky...
-
Upload
dwayne-atkin -
Category
Documents
-
view
219 -
download
2
Transcript of Laparoscopic Adrenalectomy: A General Overview By Taylor Baldwin The University of Kentucky...
Laparoscopic Adrenalectomy:
A General Overview
By Taylor Baldwin
The University of Kentucky Minimally
Invasive Surgery Lab
Adrenalectomy: Overview
Patient History, Work-up, and Diagnosis
The Laparoscopic Method
The Operating Room
Equipment
The Procedure
Complications and Post Operative Care
Patient History
A 54 year old male presents with the following symptoms:An episodic headacheExcessive sweatingTachycardiaHypertensionAnxietyWeight-lossElevated blood pressure
Workup
Initial symptoms fit the classic model of pheochromocytoma
A CT scan indicates a small (3cm) mass on the left adrenal gland.
Further biochemcial testing reveals elevated metanephrines (metabolite of catecholamines) in the urine, indicating an over secretion of catecholamines in the medulla of the adrenal gland.
This evidence leads to a strong indication of pheochromocytoma in the left adrenal gland.
Possible Methods for Treatment
Surgery (either open or laparoscopically) is the clear first choice treatment of these patients.
A combination alpha/beta blocker can be used to treat patients in an attempt to slow the heart rate. This treatment is often used with surgery as a preoperative treatment to prevent intraoperative hypertension.
Ultimately, the tumor needs to be removed.
Indications for the Laparoscopic Method
Functional adrenal cortical massesCortisol-secreting adenoma (Cushing’s adenoma)Aldosterone-secreting adenoma (Conn’s disease)Adrenal cortical hyperplasia (Cushing’s disease)
Functional adrenal medullary massesPheochromocytomas (tumor of medulla of adrenal
gland)
Nonfunctional adrenal tumorsAdenoma (“incedentalomas”)
Contraindications for the Laparoscopic Method
Adrenal Carcinoma
Adrenal masses greater than 10 cm
Untreated Coagulopathies
Surgeon Inexperience
Surgical history of kidney or liver Increase risk of adhesions making transperitoneal
approach impossibleMake for much riskier dissections
Advantages of the Laparoscopic Method
Reduced wound morbidity
Shorter hospital stay
Easier/quicker return to normal activity
Reduced postoperative pain Due to absence of large surgical wounds
Magnified view of operative field
Less blood loss
Open vs Laparoscopic Adrenalectomy
Open Laparoscopic
Operation Time 4 hours 3 hours
Reoperation Frequency
4.8% 1.4%
Length of Stay 9.4 Days 4.1 Days
Morbidity Rates (30 day)
17.4% 3.6%
Based on a 2004 study:http://linkinghub.elsevier.com/retrieve/pii/S1072751508000707
Patient Positioning
The patient is placed on the operating table slightly flexed at the waist in the right lateral decubitus position.
A cushion can be used under the lumber fossa on the contralateral side to open the operative field and help with trocar placement.
Team Placement
The primary surgeon stands facing the abdominal side of the patient
The second surgeon will also be standing on the abdominal side of the patient
The assisting nurse stands on the opposite side of the patient, facing the surgeon
The anesthesiologist/anesthesia tech typically stands at the head of the operating table on the side of the assistant
Team Placement (Continued)
Primary Surgeon
Assisting Surgeon
Anesthesiologist/ Anesthesia tech
Assisting Nurse
Equipment Placement
The operating room is centered around the operating table
The anesthetic equipment is typically placed at the head of the operating table
Monitors are set up on either side of the operating table for easy viewing
The instrument table is placed at the foot of the bed for easy access by the assisting nurse
Electrocautery and laparoscopic unit are placed where there is room
Equipment Placement (continued)
Anesthetic equipment and monitor for viewing vital signs
Instrument table placed at foot of bed
Electrocautery and laparoscopic unit typically placed in these locations
Monitor used by assistants to view surgery
Monitor used by surgeons to operate
Instruments Used
Laparoscope Typically a 30 degree
laparoscope is used for this procedure
Dissectors 5mm or 10mm grasper Maryland Dissecting
grasper
Cutting Devices Laparoscopic scissors Harmonic Scalpel Hook Cautery
Other Instruments Suction-irrigation Device Extraction Bag Clip Applier
Port Placement
The left adrenalectomy is an operation that requires three 10mm trocars and an optional fourth 5mm trocar
1. The 1st 10mm trocar is placed 2cm below and parallel to the costal margin
2. The 2nd 10mm trocar is placed under the 11th rib at the mid axillary line
3. The 3rd 10mm trocar is placed along the mid-clavicular line, lateral to the rectus muscle
4. The optional 5mm trocar is placed dorsally at the costovertebral angle
Port Placement (continued)
5mm trocar at the costovertebral angle
10mm trocar parallel to costal margin
10mm trocar on the midaxillary line
10mm trocar along midclavicular line
Procedure: Overview Mobilize the colon
Divide the lienophrenic ligament
Divide the splenorenal ligament
Locate, clip, and cut the adrenal vein
Dissect the Lower aspect of the gland
Locate, clip, and cut the Inferior Adrenal Artery
Locate, clip, and cut the Middle Adrenal Artery
Locate, clip, and cut the Superior Adrenal Artery
Dissect the superior, posterior, and lateral aspects of the gland
Remove the Gland through an extraction bag
Procedure
Mobilization of the colonThis is done by cutting the
lienocolic ligamentThis will open the operating
field and help to protect the colon from injury
Mobilization of the SpleenThis is achieved by dividing
the lienophrenic ligamentThis allows the surgeon to
move the spleen and start to access the adrenal vein
Procedure
Division of the Splenorenal ligament This is the ligament that is
holding the spleen and kidney in close proximity
By removing this ligament, the surgeon is able to enter the proper field to find the adrenal vein
Locate, clip, and cut the Adrenal Vein Once located, the surgeon
should trace it back to the renal vein
Depending on the size of the vein, typically 3 clips are used proximally and 2 are used distally
Procedure
Dissect the lower aspect of the gland Once the adrenal vein is
removed, the lower aspect of the gland can be dissected
It is important to carefully watch for the inferior adrenal artery
Locate, clip, and cut the inferior adrenal artery Once this artery is cut, it is
possible to detach the inferior portion of the gland from the kidney
Procedure
Locate, clip, and cut the middle adrenal artery Once this artery is cut it is
possible to dissect the more medial aspects of the gland
Use the appropriate number of clips depending on the size of the artery
Locate, clip, and cut the superior adrenal artery Once this artery is cut it is
possible to dissect the more superior aspects of the gland
Again, use as many clips as necessary
Procedure
Dissect the superior, posterior, and lateral aspects of the glandNow that the gland has
been detached of its veins and arteries, it is possible to dissect it completely
Remove the gland with an extraction bag It is important to watch
out for and not harm other organs during this process
Possible Complications
Hemorrhage
Cause and Prevention Correct any preoperative coagulopathies Clip proximal portions of veins at least twice
Recognition and Management Intraoperative hemorrhage identified by excessive
bleeding and may require conversion to an open operation if hemostasis is not achieved
Postoperative hemorrhage is identified by monitoring vital signs and urine output overnight
Possible Complications (Cont.)
Damage to intraabdominal or retroperitoneal structures
Cause and Prevention Knowledge of anatomy is key! Trace veins to point of origin to be sure Always know the location of spleen, liver, and pancreas
Recognition and Management Damage to liver or spleen usually results in intraoperative
or postoperative bleeding Damage to pancreas can result in pancreatitis Often these complications are self managed, but
sometimes may require medical or surgical management
Post Operative Care
Pain medication given as required (typically only necessary for a few days)
Patient is allowed and able to ambulate (move about) on the same day
Liquid food intake is started the night of the procedure
Solid food intake may begin on the first postoperative day
The patient can leave the hospital on the second or third postoperative day