RESUMO
BACKGROUND: Hyponatremia in cancer patients is often caused by the syndrome of inappropriate antidiuretic hormone secretion (SIADH). The aim of this observational multicenter study was to analyze the medical and economic implications of SIADH in this setting. METHODS: This study included 90 oncological patients from 28 Italian institutions that developed SIADH between January 2010 and September 2015. Data on clinical-pathological characteristics, anticancer therapies, hyponatremia, and related treatments were statistically analyzed. RESULTS: The majority were lung cancer patients (73%) with metastatic disease at the onset of hyponatremia (83%). A total of 76 patients (84%) were hospitalized because of SIADH and less than half (41%) received tolvaptan for SIADH treatment. The duration of hospitalization was significantly longer in patients who did not receive tolvaptan and in those who do not reach sodium normalization during hospitalization. Patients who experienced a second episode of hyponatremia following tolvaptan dose modification/discontinuation presented a significantly lower serum sodium value at the time of hospitalization and minimum sodium value during hospitalization compared with patients who had not experienced another episode. The severity of hyponatremia, defined as minimum sodium value during hospitalization with a cut-off value of 110 mmol/l, and not obtaining sodium correction during hospitalization significantly correlated with overall survival rate. CONCLUSIONS: Hyponatremia due to SIADH could result in longer hospitalization and in a decreased overall survival when not adequately treated, and tolvaptan represents an effective treatment with a potential effect of both improving overall survival and decreasing duration of hospitalization.
RESUMO
BACKGROUND: Interest in medical errors has increased during the last few years owing to the number of medical malpractice claims. Reasons for the increasing number of claims may be related to patients' higher expectations, iatrogenic injury, and the growth of the legal services industry. Claims analysis provides helpful information in specialties in which a higher number of errors occur, highlighting areas where orthopaedic care might be improved. QUESTIONS/PURPOSES: We determined: (1) the number of claims involving orthopaedics and traumatology in Rome; (2) the risk of litigation in elective and trauma surgery; (3) the most common surgical procedures involved in claims and indemnity payments; (4) the time between the adverse medical event and the judgment date; and (5) issues related to informed consent. METHODS: We analyzed 1925 malpractice judgments decided in the Civil Court of Rome between 2004 and 2010. RESULTS: In total, 243 orthopaedics claims were filed, and in 75% of these cases surgeons were found liable; 149 (61%) of these resulted from elective surgery. Surgical teams were sued in 30 claims and found liable in 22. The total indemnity payment ordered was more than 12,350,000 (USD 16,190,000). THA and spinal surgery were the most common surgical procedures involved. Inadequate informed consent was reported in 5.3% of cases. CONCLUSIONS: Our study shows that careful medical examination, accurate documentation in medical records, and adequate informed consent might reduce the number of claims. We suggest monitoring of court judgments would be useful to develop prevention strategies to reduce claims.