Thursday, December 4th, 2008.

Annals of Surgical Oncology. 2009 Feb;16(2):334-44. Epub 2008 Dec 3. [Link]

Miao N, Pingpank JF, Alexander HR, Royal R, Steinberg SM, Quezado MM, Beresnev T, Quezado ZM.

Department of Anesthesia and Surgical Services, National Institutes of Health Clinical Center, National Institutes of Health, 10 Center Drive, MSC-1512, Building 10, Room 2C624, Bethesda, MD 20892-1512, USA.

Abstract

Cytoreductive surgery and continuous hyperthermic peritoneal perfusion (CHPP) involve the conduct of a complex surgical procedure and delivery of high-dose hyperthermic chemotherapy to the peritoneum. This therapeutic modality has been shown to benefit patients with peritoneal carcinomatosis resulting from gastrointestinal and ovarian tumors and mesothelioma. However, it is unknown whether the primary disease (mesothelioma versus peritoneal carcinomatosis) affects hemodynamic and metabolic perturbations during the course of CHPP with cisplatin. We examined the perioperative course of patients undergoing CHPP with cisplatin and evaluated the effect of primary diagnosis (mesothelioma versus peritoneal carcinomatosis) on hemodynamic and metabolic parameters in response to peritoneal perfusion. Sixty-nine mesothelioma and 100 peritoneal carcinomatosis patients underwent 169 consecutive cytoreduction and CHPP procedures with general anesthesia. During CHPP, patients from both groups developed significant increases in central venous pressure, and heart rate, decreases in mean arterial pressure (all P < 0.0001), metabolic acidosis with significant decreases in pH and bicarbonate (P < 0.0001), deterioration of gas exchange with significant increases in PaCO₂ and oxygen alveolar–arterial gradient (P < 0.0001), and significant increases in activated partial thromboplastin time (aPTT) and prothrombin time (PT) and decreases in hematocrit and platelet counts (all P < 0.0001). However, patients with mesothelioma had lesser increases in temperature (P < 0.01) and heart rate (P < 0.0001) and lesser decreases in hematocrit (P = 0.0013) during CHPP and greater decreases in sodium bicarbonate (P = 0.0082) after completion of CHPP compared with patients with peritoneal carcinomatosis. We conclude that the transient hemodynamic and metabolic perturbations associated with cytoreductive surgery and CHPP with cisplatin can vary according to the primary diagnosis (mesothelioma versus peritoneal carcinomatosis) warranting this therapy.

Glossary

therapy

any of the measures taken to treat a disease. Unproven therapy is any therapy that has not been scientifically tested and approved. Use of an unproven therapy instead of standard (proven) therapy is called alternative therapy. Some alternative therapies have dangerous or even life-threatening side effects. For others, the main danger is that a patient may lose the opportunity to benefit from standard therapy. Complementary therapy, on the other hand, refers to therapies used in addition to standard therapy. Some complementary therapies may help relieve certain symptoms of cancer, relieve side effects of standard cancer therapy, or improve a patient's sense of well-being. The ACS recommends that patients considering use of any alternative or complementary therapy discuss this with their health care team.

platelet

a part of the blood that helps it "stick together" (clot) to promote healing after an injury. Chemotherapy can cause a drop in the platelet count--a condition called thrombocytopenia.

oncology

(on-call-o-jee) the branch of medicine concerned with the diagnosis and treatment of cancer.

diagnosis

identifying a disease by its signs or symptoms, and by using imaging procedures and laboratory findings. The earlier a diagnosis of cancer is made, the better the chance for long-term survival.

chemotherapy

(key-mo-THER-uh-pee) treatment with drugs to destroy cancer cells. Chemotherapy is often used with surgery or radiation to treat cancer when the cancer has spread, when it has come back (recurred), or when there is a strong chance that it could recur.

anesthesia

(an-es-thee-zha) the loss of feeling or sensation as a result of drugs or gases. General anesthesia causes loss of consciousness ("puts you to sleep"). Local or regional anesthesia numbs only a certain area.

mesothelioma

a tumor derived from mesothelial tissue, such as the peritoneum (lining the abdomen) or pleura (lining the lungs). More on mesothelioma.

peritoneal

(pair-uh-tuh-nee-al) the serous membrane that lines the cavity of the abdomen. (More on Peritoneal Mesothelioma.)

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