Acid base and electrolyte disturbance in diarrhoea.

OBJECTIVE: The present study was undertaken to study the frequency of electrolyte imbalance in children with diarrhoea and the relationship between electrolyte abnormalities and mortality. MATERIALS AND METHODS: This is a retrospective, observational hospital based study. Fifty seven children admitted to paediatric ward with diarrhoea and dehydration was evaluated for electrolyte and acid base status at presentation. The variables were analyzed using chi-square and student t- test. RESULTS: Majority (70%) of patients were below 2 years of age. There were 37 (65%) males and 20(35%) females. Electrolyte disturbance was observed in 46 (80%) patients while acid base disturbance was observed in all (100%) where the estimations were done. The major electrolyte disturbances noted were hyponatremia (56%), which was either isolated (26%) or associated with hypokalemia (26%). The second common abnormality was hypokalemia (46%) which was again either isolated (14%) or associated with hyponatremia (26%). About 10% patient had hypernatremia and about 3% had hyperkalemia. Twenty one (37 %) patients had mixed electrolyte imbalance. ABG analysis was performed only in 16 patients. Arterial blood gas analysis could be performed only in 16 patients. Metabolic acidosis was present in 15 (94%) while one (6%) had metabolic alkalosis. Out of 57, five patients (8.7%) expired. All of them had electrolyte abnormalities. Out of five patients who died one had isolated hyponatremia, 2 had hyponatremia + hypokalemia, while one each had hypernatremia + hypokalemia and hypernatremia+ hyperkalemia. Statistically significant mortality was observed in patients presenting with either hyponatremia or hypokalemia as compared to the group with normal electrolytes. CONCLUSION: Hyponatremia, hypokalemia and metabolic acidosis are common electrolyte and acid-base abnormalities in children with diarrhoea and dehydration and often responsible for mortality.

Admission hypomagnesemia - impact on mortality or morbidity in critically ill patients

No previous study exists to evaluate admission serum magnesium level as a predictor of morbidity or mortality. The aim of this study was to define the prevalence of admission hypomagnesemia in critically ill patients and to evaluate its relationship with organ dysfunction, length of stay, and mortality. A retrospective study was done on 100 patients >/= 16 years old, admitted to the medical-surgical intensive care unit [ICU] at the University Hospital over 2 years period. Observations were made on admission total serum magnesium level, a variety of lab tests related to magnesium, need for ventilator, duration of mechanical ventilation, hospital/ICU lengths of stay, and general patient demographics. The serum magnesium level [normal value, 1.3-2.1 mEq/L] was measured at admission. At admission, 51% of patients had hypomagnesemia, 49% had normal magnesium levels. There was significant difference in mortality rate [55% vs 35%], the length of hospital [15.29 +/- 0.66 vs 12.81 +/- 0.91], or ICU [9.16 +/- 0.53 vs 5.71 +/- 0.55] stay between these two groups of patients [p < 0.05 for all]. Hypomagnesemic patients more frequently had total hypocalcemia, hypokalemia, and hyponatremia. A total of 51 patients developed hypomagnesemia during their ICU stay; these patients had higher Acute Physiology And Chronic Health Evaluation II [APACHE II] [14.16 +/- 1.03 vs 10.80 +/- 0.94] and Sequential Organ Failure Assessment [SOFA; 10.89 +/- 0.90 vs 7.58 +/- 5.01] scores at admission [p < 0.01 for both], a higher maximum SOFA score during their ICU stay [14.75 +/- 0.73 vs 8.08 +/- 0.52, p < 0.01], a more need to ventilator [58.6% vs 41.4%, p < 0.05], and longer duration of mechanical ventilation [7.2 vs 4.7 day, p < 0.01] than the other patients. The ROC curve of SOFA score in the hypomagnesemia yields significantly better results than APACHE II. An increase of 5 units in the APACHE II or SOFA measured on admission increase relative probability of hypomagnesemia by a factor of 0.12 and 0.16 respectively. Development of hypomagnesemia during an ICU stay is associated with guarded prognosis. Monitoring of serum magnesium levels may have prognostic, and perhaps therapeutic, implications

Atención de las emergencias y urgencias médico-quirúrgicas en un hospital oncológico / Emergencies and urgent medical-surgical conditions attended at a comprehensive cancer center

La incidencia global de las emergencias y urgencias médicoquirúrgicas en pacientes con cáncer ha sido descrita esporádicamente. El objetivo del estudio fue identificar los principales síntomas y diagnósticos de los pacientes que acudieron al Servicio de Urgencias del Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social. El diseño fue observacional y retrospectivo. La información fue obtenida del registro de la consulta diaria del Servicio de Admisión Continua. En un periodo de seis meses fueron atendidos 4,937 pacientes. Los cuadros clínicos evaluados como emergencias correspondieron a 3.7 %, como condiciones médicas urgentes 52.5 % y como condiciones no urgentes, 43.7 %. Los síntomas más frecuentes motivo de las consultas de emergencia o urgencias en los pacientes con cáncer fueron dolor grave en 69.5 % y deshidratación con desequilibrio hidroelectrolítico en 11.4 %. Los principales síntomas fueron provocados por el tumor primario o su diseminación metastásica, en 89 %. Los tumores malignos sólidos más frecuentes fueron los carcinomas mamario, de colon/recto, cervicouterino, broncogénico y gástrico. Las principales emergencias registradas en los pacientes con cáncer en este estudio fueron choque séptico y neutropenia severa (20 %), choque hipovolémico por sangrado en diversos sitios (16.5 %) y disnea agudizada por neumonía o derrame pleural (12 %). En aproximadamente 80 % de quienes son tratados paso a paso de manera racional, el dolor por cáncer pudo ser controlado sólo con analgésicos. La analgesia no efectiva se asoció frecuentemente con prescripción inadecuada o ingesta insuficiente de analgésicos opioides. Los servicios de urgencias establecidos funcionalmente en los hospitales monográficos de cáncer ofrecen la mejor oportunidad de tratamiento a los pacientes con cáncer con condiciones emergentes o urgentes.

The global incidence of emergencies and urgent medical?surgical conditions in cancer patients has not been well described. The aim of the study was to identify the main symptoms and diagnoses in patients seen for consultation at the Urgent Care Service in a Mexican Comprehensive Cancer Center. This was a retrospective observational study. The information was obtained from the Continuous Admission Service daily consultation records at the Oncology Hospital, National Medical Center 21st Century, Institute of Social Security, Mexico City. During a 6-month period, 4937 patients were seen for consultation. True oncologic emergencies were 3.7%, urgencies 52.5% and non-urgent were 43.7%. Most common symptoms for emergency and urgency patient consultations were severe pain (69.5%) and dehydration with electrolyte imbalance (11.4%). Prevalent symptoms were associated with the primary tumor or metastatic dissemination (89% cases). The most frequent baseline diseases were breast, colorectal, cervical, lung and stomach carcinomas. Defined oncologic emergencies in this series were septic shock and severe neutropenia (20%), hypovolemic shock due to severe bleeding (16.5%), and severe dyspnea due to pneumonia or pleural efusion (12%). Data evaluating the use of analgesic drug therapy for cancer pain alone indicate that 80% of patients report adequate analgesia. Analgesia failures were associated with an insufficient prescription or with inadequate consumption of opioid analgesics. The Urgent Care Center at a Comprehensive Cancer Center offers the best opportunity for diagnosis and treatment of emergencies and urgent care conditions in cancer patients.

Freqüência relativa de hipomagnesemia em pacientes com limitação crônica do fluxo aéreo atendidos em ambulatório de referência do norte do Paraná / The relative frequency of hypomagnesemia in outpatients with chronic airflow limitation treated at a referral center in the north of the state of Paraná, Brazil

OBJETIVO: Determinar a freqüência relativa de hipomagnesemia em pacientes com limitação crônica do fluxo aéreo atendidos num ambulatório de referência do norte do Paraná, nos anos de 2000 a 2001, e verificar se há relação entre esse distúrbio e hipoxemia, outros distúrbios eletrolíticos e com a gravidade da doença. MÉTODOS: Estudo descritivo sobre a freqüência relativa de hipomagnesemia em 72 pacientes com limitação crônica do fluxo aéreo. Os pacientes realizaram dosagens séricas de magnésio e outros eletrólitos, além de realizarem o estadiamento de sua doença de base. RESULTADOS: A prevalência encontrada de hipomagnesemia foi de 27,8 por cento. A idade média foi de 65 ± 9,9 anos, com predominância de homens. O volume expiratório forçado no primeiro segundo médio foi de 1,13 ± 0,52 L. A maioria dos pacientes encontrava-se em estádios avançados da doença (68,1 por cento). Não houve associação do magnésio sérico baixo com outros distúrbios eletrolíticos, hipoxemia ou estádios de gravidade. CONCLUSÃO: A alta freqüência de pacientes em estádios avançados deve-se, provavelmente, ao fato de o ambulatório ser um centro de referência da região. Novos estudos devem ser realizados para determinar prováveis causas dessa alta prevalência de hipomagnesemia.

OBJECTIVE: To determine the relative frequency of hypomagnesemia among patients with chronic airflow limitation treated as outpatients at a referral center in the northern part of the state of Paraná between 2000 and 2001, as well as to determine whether hypomagnesemia correlates with hypoxia, with other electrolyte disturbances and with the severity of airflow limitation. METHODS: This was a descriptive study of the relative frequency of hypomagnesemia in 72 patients with chronic airflow limitation. All of the patients were submitted to blood tests to determine serum levels of magnesium and other electrolytes, as well as to staging of the underlying disease. RESULTS: The prevalence of hypomagnesemia was 27.8 percent. The mean age was 65 ± 9.9 years, and there was a predominance of males. The mean forced expiratory volume in one second was 1.31 ± 0.52 L. Most of the patients (68.1 percent) were found to be in the advanced stages of the disease. Hypomagnesemia was not found to correlate with other electrolyte disturbances, hypoxemia or disease stage. CONCLUSION: The high frequency of patients in the advanced stages is likely attributable to the fact that the outpatient facility is a referral center for the region. Further studies should be conducted in order to determine the probable causes of this high prevalence of hypomagnesemia.