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Following renewed ethnic violence at the end of September 1996, conflict between Tutsi rebels and the Zairian army spread to North Kivu, Zaire where approximately 700,000 Rwandan Hutu refugees resided following the 1994 genocide. After a major rebel offensive against the camps' militia groups on 15 November, a massive movement of refugees towards Rwanda through Goma town, the capital of North Kivu, began. Massive population movements such as this are likely to be associated with substantial mortality and morbidity.
Objective:
To study patterns of mortality, morbidity, and health care associated with the Rwandan refugee population repatriation during November 1996.
Methods:
This study observed the functioning of the health-care facilities in the Gisenyi District in Rwanda and the Goma District in Zaire, and surveyed mortality and morbidity among Rwandan refugees returning from Zaire to Rwanda. Patterns of mortality, morbidity, and health care were measured mainly by mortality and health centre consultation rates.
Results:
Between 15 and 21 November 1996, 553,000 refugees returned to Rwanda and 4,530 (8.2/1,000 refugees) consultations took place at the border dispensary (watery diarrhea, 63%; bloody diarrhea, 1%). There were 129 (0.2/1,000) surgical admissions (72% soft tissue trauma) to the Gisenyi hospital in the subsequent two weeks. The average number of consultations from the 13 health centres during the same period was 500/day. Overall, the recorded death rate was 0.5/10,000 (all associated with diarrhea). A total of 3,586 bodies were identified in the refugee camps and surrounding areas of Goma, almost all the result of trauma. Many had died in the weeks before the exodus. Health centres were overwhelmed and many of the deficiencies in provision of health care identified in 1994 again were evident.
Results:
Non-violent death rates were low, a reflection of the population's health status prior to migration and immunity acquired from the 1994 cholera out-break. Health facilities were over stretched, principally because of depleted numbers of local, health-care workers associated with the 1994 genocide. Health-care facilities running parallel to the existing health-care system functioned most effectively.
To determine the effect of a return of spontaneous circulation (RO SC) on survival to hospital discharge as compared to other established predictors of survival.
Methods:
A retrospective case review of all out-of-hospital primary cardiac arrests from 01 January, 1992 to 31 December 1994 was conducted. The relative values of age, race, gender, presenting cardiac rhythm, witnessed event, initiation of CPR by bystanders, response time intervals, and return of spontaneous circulation (ROSC) in an Utstein-template database were tested as predictors of survival of patients who had suffered a cardiac arrest in the out-of-hospital setting. The ROSC was defined as return of spontaneous circulation prior to and present upon arrival at the emergency department. Predictors were evaluated for statistical significance using a logistic regression analysis (p < 0.05). Odds ratios (OR) and 95% confidence intervals (CI) with positive and negative predictive values (PPV, NPV) were calculated.
Results:
Of 832 patients with primary cardiac arrest, 153 (18.4%) had ROSC and 67 (8.1%) survived to hospital discharge. Comparing survivors to nonsurvivors, the mean values for age were 64 to 67 years, with 59.7% to 36.1% being witnessed, 35.8% to 23.9% having bystander CPR initiated, 88.1% to 48.4% having ventricular fibrillation (V-fib) and 82.1% to 64.0% having ROSC. An initial electro-cardiographic rhythm of V-fib (p = 0.009; OR = 2.2; CI = 1.2-3.9), and ROSC (p < 0.0001; OR = 5.2; CI = 3.6-7.5) are statistically significant predictors of survival to hospital discharge. The PPV was 13.8% for V-fib and 35.9% for ROSC, and the NPV was 98.0% for V-fib and 98.2% for ROSC.
Conclusion:
Presenting V-fib and out-of-hospital ROSC are significant predictors of survival from cardiac arrest. Failure to obtain ROSC in the out-of-hospital setting strongly suggests consideration for terminating resuscitation efforts.
It commonly is rumored that in large scale disasters, packs of dogs present a human health hazard because of dog bites. However, it is likely that factors other than pack behavior comprise greater risk factors for dog bites in disaster-response personnel. Important risk factors include: 1) the density of the human population, which in turn, determines the number of dogs at a disaster site; 2) territorial behavior of dogs at their site of residence, which determines the frequency with which dogs may bite; and 3) whether rabies is present at endemic or epidemic levels within the area in which the disaster is occurring, which determines the likelihood of fatal outcomes. Persons bitten by a dog should seek medical attention as contraction of rabies may result in a fatal outcome from a dog bite. It is recommended that disaster response personnel obtain pre-exposure vaccination against rabies. Vaccinated or not, they immediately should seek post-exposure treatment for rabies following potential exposure.