Right Colectomy Robotic Resection
Jorge A. Lagares-Garcia
Cesar Santiago
INDICATIONS/CONTRAINDICATIONS
For the past 25 years, minimally invasive approaches to colon surgery have progressively increased in acceptance and use. Prospective randomized trials have shown oncologic parity adoption between open and laparoscopic colectomy. Adoption has progressively increased, but not all patients will receive this approach.
Robotic-assisted colectomy (RAC) has become more widespread in its application to segmental resection and proctectomy. The Xi platform (Intuitive Surgical, Sunnyvale, CA) offers a single rotational boom in the top of the frame that allows any kind of docking to the patient and less bulky instrumentation and camera. There is a lack of demonstrable superiority of the robot compared to the laparoscopic approach, although some studies have shown a lower conversion rate, especially in the obese population. Advantages include the facilitation of the performance of intracorporeal anastomosis, extraction of the specimen off the midline, decreased risk of incisional hernia, and potential decrease in the hospital length of stay.
Current indications for RAC are the same as laparoscopic surgery for benign and malignant conditions. The only absolute contraindication to RAC would be if the patient is medically unfit to undergo general anesthesia. Relative contraindications include the large size of the tumor or multiple prior laparotomies that preclude the entrance to the abdominal cavity. As with any other surgical approach, the surgeon should be aware of limitations and personal learning curve. RAC has demonstrated operative times similar to that of laparoscopic. Dedication and consistency at the console are prerequisites of excellent practice.
Advantages of the Robotic Approach
Regardless of the platform generation, the 3D vision enhances the surgeon’s ability to perform the procedure. With either second or third generations, the surgeon is able to use three arms and the camera.
The traditional improvements in tremor elimination, 7 degrees of wristing capabilities, and the motion scaling are also improvements from the laparoscopic approach. One of the unique features of RAC is the surgeon comfort owing to the ergonomic designed console. The surgeon can practice the use of instruments such as robotic stapler or suturing. Hand-sewing is greatly enhanced, enabling the operator to perform an intracorporeal anastomosis.
Limitations of the Robotic Approach
Haptic Feedback
There is a lack of tactile sensation. The surgeon is heavily dependent on the 3D vision and personal experience with each instrument to gauge the pressure and tension placed on the bowel, vessels, or other important structures. It is important for the novice robotic surgeon to avoid extreme forces and pulling, and use the graspers more as a retractor.
Cost
RAC cost is higher than that for laparoscopic or open surgery. The cost in the healthcare system may be mitigated if the conversion rate can be decreased, and complications are reduced. Intracorporeal anastomosis and higher ligation of the ileocolic pedicle may offer better cancer staging.
PREOPERATIVE PLANNING
Preoperative proper localization of the pathology is important in benign and malignant disease. It is our practice to request the referring endoscopist to place proximal and distal tattooing of the lesion. If the clear landmarks are lost during endoscopy, a very helpful approach is to place an endoscopic clip and get a plain abdominal X-ray. Do not perform a bowel preparation the day before the surgery. Patients receive oral antibiotics and clear liquid diet up to 6 hours before surgery following anesthesia protocol. Carbohydrate load has been shown to improve outcomes in colon surgery when associated with enhanced recovery protocols. Preoperative cardiopulmonary clearance is based on risk factors for general anesthesia. The night before the procedure, the patient is to shower with chlorhexidine. Deep venous thrombosis (DVT) prophylaxis and antibiotics are administered per institutional protocol.
SURGERY
Setup and Preparation
Si Robotic Platform
The patient is placed in supine position on a beanbag. Obese patients are taped over the chest to avoid sliding. Reverse Trendelenburg position of about 5-10 degrees and left side down about 5 degrees is helpful. It is important to always visualize the elbow of arm 3 on the platform because it may hit over the face or the shoulder of the patient. On right-sided lesions, the platform may enter on the right side; however, on hepatic flexure or proximal transverse lesions, the best approach is to dock from the right shoulder in an imaginary line between the right shoulder and the left iliac crest.
Xi Robotic Platform
The patient is placed supine on the operating room (OR) table, making sure that the short side to the table is toward the patient’s head. The patient is secured to the table with the Opt-Shield SUPINE (BCG Medical, San Diego, CA), device to prevent sliding, and the table is airplaned right side up (roughly 15-20 degrees) there. There is no need for Trendelenburg or reverse Trendelenburg, although sometimes these positions are used to expose the duodenum, depending on the location of the transverse colon (Fig. 5-1). The robotic platform is brought over the right side at around the level of the axilla. Rotating the boom on the robotic platform allows for access to all four quadrants of the abdomen regardless of the robot docking location. The operating surgeon should sit at a location where he or she can see the robotic arms to correct external arm collisions, if necessary. Targeting of the lesion is performed following manufacture guidelines and optimal position of the arms is performed by the system to avoid collisions.
Patient Positioning
Lithotomy and supine position are both acceptable positions. The placement of the patient in lithotomy position may interfere with the arms and cause external collisions with the left leg. This problem may be
more pronounced in the Si robotic platform; the arms have a slimmer profile in the Xi system, thereby minimizing this problem. The arms are placed on each side of the patient. Routinely, foam pads are used over the lateral aspects of the elbows, wrists, shoulders, and neck. Using the beanbag strapped to the operating table holds the individual. Placing the bag over the shoulders will secure the patient with minimal cranial displacement. This is not as important in right colectomy as it is in robotic low anterior resections, where the subject may slide cranially in Trendelenburg position. In right colectomy, the danger is the patient sliding down especially in lithotomy if steep reversed Trendelenburg is used. The patient is tested for safety and possible sliding before prepping and draping the subject.
more pronounced in the Si robotic platform; the arms have a slimmer profile in the Xi system, thereby minimizing this problem. The arms are placed on each side of the patient. Routinely, foam pads are used over the lateral aspects of the elbows, wrists, shoulders, and neck. Using the beanbag strapped to the operating table holds the individual. Placing the bag over the shoulders will secure the patient with minimal cranial displacement. This is not as important in right colectomy as it is in robotic low anterior resections, where the subject may slide cranially in Trendelenburg position. In right colectomy, the danger is the patient sliding down especially in lithotomy if steep reversed Trendelenburg is used. The patient is tested for safety and possible sliding before prepping and draping the subject.
Si System
Routine placement of the OR table is perpendicular to the anesthesia cart. Once the system is docked and the patient position is set, the platform cannot be moved; movement may cause an irrecoverable fault to occur that may require the rebooting of the entire system. Figure 5-2 shows the placement of the patient in relationship to anesthesia. Robotic docking is done from the right shoulder and Figures 5-3 and 5-4 show the docking from the view of the surgeon and the nursing staff, respectively.
Xi System
The patient is positioned supine on the OR table to prevent sliding. All pressure points are checked and corrected. The operating surgeon sits at a location in the room where he can visualize the robotic arms and can communicate using line of sight with the surgical assistant. The OR table is airplaned right side up slightly to displace the small bowel to the pelvis and the left upper quadrant exposing the duodenum and vascular pedicle. Anesthesia is usually located at the head of the table.
Port Placement