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1302 Technique of Intraperitoneal Chemotherapy: Normothermic and Hyperthermic

Table 7. Comparison of Open and Closed Methods of Delivering HIPEC

Increased abdominal pressure                                   Open                Closed
Potential for continued surgery during HIPEC                   No                  Yes
Potential for aerosol contamination                            Yes                 No
Distribution of chemotherapy and heat                          Yes                 Less
Pharmacokinetic monitoring of tumor and normal tissues         Uniform throughout  Variable
Simultaneous perfusion of pleural cavity                       Yes                 No
Management of technical problems with intraabdominal tubing    Yes                 No
                                                               Easy                May require opening of the
Detection and treatment of occult bowel perforation
                                                               Easier                 abdominal incision
Adapted from (44)                                                                  More difficult -have to

                                                                                      discontinue HIPEC to fix

HIPEC pumping equipment. Anti-emetics including 5              sensor attached) are placed one on either side of the
HT-3 receptor antagonists, dexamethasone and newer             pelvic floor and connected by another Y-connector to a
agents like fosaprepitant are commonly administered IV         single outflow tube (OT). A temperature sensor may also
prior to the chemotherapy.                                     be secured by a suture to the peritoneum close to the root
                                                               of the small bowel mesentery. The outflow tubing is laid
    There are two major methods of HIPEC delivery: that        at the back of the abdomen behind the small bowel and
involving closure of the abdominal skin incision prior to      the OT is brought out in the upper part of the incision
perfusion, the ‘closed method’ or that involving perfusion     with the IT coming out of the lower part of the incision.
with the wound open, the ‘open method’ sometimes
called the ‘coliseum’ method. A tabulated comparison               The skin (not the rectus fascia) of the abdominal
of these approaches is given in Table 7. ‘Semi-closed’         incision is closed using a long monofilament suture such
and laparoscopic methods have also been described              as polydioxanone sulfate (PDS) #1 suture (Ethicon Inc,
(43, 44). Animal (porcine) studies suggest that better         Somerville, NJ) in a running and locking fashion (Figure
intraperitoneal drug concentration and pharmacokinetics        6A). Care is taken to ensure that the skin edges are not
are obtained with the laparoscopic>open> closed method         inverted and that the skin is tightly apposed around
(45, 46).                                                      the tubing. With the wound closed, the IT and OT are
                                                               connected to the heat exchange pump (Figure 6B,C)
    Whichever method is used, once perfusion is                and the pre-heated perfusate such as Deflex™ peritoneal
completed, perfusate is allowed to drain off into a waste      dialysis solution (Fresenius Medical Care, Lexington,
container. The abdomen is opened completely and                MA, USA), is allowed to fill the cavity with the patient
residual fluid is carefully aspirated or removed with sterile  in steep head-down position to facilitate the evacuation
towels. The abdomen and pelvis can be irrigated with 2-3       of free air. Between 2 and 3 liters is normally required
liters of saline to wash away any residual chemotherapy        to distend the cavity. The operating table can be leveled
agent. All contaminated instruments and tubing are             after the air is evacuated. When consistent desired inflow
then passed off and placed in toxic substance containers.      and outflow temperatures (41-43°C inflow and 41-42°C
Gowns and gloves are changed and the surgery, including        outflow) and flow rate (1000-1500ml/min) are achieved
performance of anastomoses, is completed. Post-                the chemotherapy drug(s) is added to the perfusate. The
operatively, patients may be monitored in the Intensive        chemotherapy perfusate is allowed to circulate within
Care Unit. If cisplatin has been used a urine output of at     the abdominal cavity for 30-90mins while distribution is
least 100ml/hour should be maintained for the first 72         assisted with gentle kneading of the abdomen from both
hours. Intra-operative and post operative monitoring of        sides. Care is taken to watch for leaks through the skin
electrolytes and coagulation parameters is necessary.          and these are secured with sutures such as 0 polyglactin
                                                               910 (Vicryl®, Ethicon Inc, Somerville, NJ).
Closed Technique
Once CRS is complete two inflow tubes (one with a              Open Technique
temperature sensor attached at the tip) are connected by       The open technique is commonly referred to as the
a Y-connector to a single inflow tube (IT), and placed         “Coliseum technique” (47) (Figure 7). After the cancer
above the right lobe of the liver and in the left upper        resection is complete, an IT is passed through a stab
quadrant. Two outflow tubes (one with a temperature
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