Cancer and its treatment include many medical emergencies. Hence taking care of these emergencies presents a challenge not only to the clinicians but also to the medical oncologists. Cancer patients may have complex medical problems in addition to cancer such as coronary heart diseases, diabetes mellitus, and respiratory diseases. Such patients require immediate medical assistance and emergency care facilities to improvise their health condition. The present review paper focuses on more commonly confronted emergencies in cancer patients and their related management.Keywords: Hyperviscosity syndrome, Hemostatic emergencies, Oncologic emergencies, Tumor lysis syndrome, SIADH DOI: http://dx.doi.org/10.18203/2320-6012.ijrms20181492Baruah M. Int J Res Med Sci. 2018 May;6(5):1484-1490 International
Tumor lysis syndrome (TLS)TLS results from destruction of large number of rapidly multiplying cells as a result of cancer induction chemotherapy but can also be seen after treatment with radiotherapy, corticosteroids, and hormonal agents such as tamoxifen, biological agents such as Interferon or spontaneously in patients with high tumor burden. This syndrome is associated with severe electrolyte abnormalities, hyperuricemia, hyperkalemia, hyperphosphatemia, hypocalcemia, lactic acidosis and can lead to acute renal failure. 5 No specific signs and symptoms are noted for this syndrome. Symptoms may advance in line with electrolyte disturbances that include muscle weakness, arrhythmias, neuromuscular irritability, seizures and sudden death. 6 The main cause of mortality in these patients was arrhythmia associated with electrolyte disturbances, predominantly hyperkalemia and renal failure. 7 Hence, careful assessment, monitoring and treating related electrolyte disturbance is very essential to avoid serious complications of this syndrome.Regular monitoring of electrolytes, BUN, creatinine, uric acid, phosphates and calcium levels forms the basis of therapy. Patients should be well hydrated (200-300ml/hr). Urinary flow should be increased by diuretics such as Mannitol. Sodium bicarbonate 100mEq/l should be given for urinary alkalization, Allopurinol 500 mgm/m 2 on day 1 to day 3 then reduced to 200mgm/m2 throughout cytoreductive therapy.8 Calcium therapy and exchange resins for hyperkalemia may be considered. Calcitrol therapy may be considered for persistently low Calcium levels.9 SIADH SIADH, characterized by hyponatremia that occurs due to the production of arginine vasopressin by the tumour cells. Hyponatremia is related with plasma hyposmolarity and high urinary osmolarity, together with a high level of elimination of urinary sodium without any change in plasma volume. 6 Other reasons may include use of some drugs like ACE inhibitors, antidepressants, and antimitotics such as cyclophosphamide, vincristine, cisplatin, melphalan and even some surgical procedures and due to some tumours like small-cell lung cancer.
10Most of the patients are asymptomatic. Early symptoms include anorexia, irritability, depression, musc...