CASE STUDY Part 1 Keep Your Head Above Water springtime bring with them an increase in a number of diseases: food by infection of the brain with the protozoan Noeglerie fowieri. poisoning from undercooked hamburgers, Lyme Sometimes referred to as the “brain-eating disease from tick bites, hookworm from walking amoeba,” for the widespread destruction of barefoot in new grass. But when a 28-year-old “Despite antibiotic brain tissue it causes, N fowleri is commonly man was declared brain-dead only 3 days after treatment, the man was found in warm lakes and rivers in the souther his symptoms first appeared, there was more than United States, especially during the summer the usual cause for concern. declared brain-dead 2 months.
Infection begins when the amoeba en When first admitted to the hospital, the man days after his admission ters the nose while swimming, diving, or even was mentally altered and highly combative. His symptoms had begun the previous day with a to the hospital.” grates along the olfactory nerve to the brain, in sudden headache, stiff neck, and backache. He tiating disease in which death is a virtual certainty was vomiting intermittently and on the day of his admission devel. Why such a commonly encountered pathogen results in so few oped a fever. Suspecting meningitis, doctors performed a spinal infections-32 cases since 2002-is not known tap, revealing cerebrospinal fluid that was cloudy, indicative of in • Why doesn’t Naegleria fowleri couse infection when it is fection. Despite antibiotic treatment, the man was declared brain dead 2 days after admission. Four months later, a 51 year old woman swallowed? from northern Louisiana was admitted to the hospital under similar Whor precautions do you think have been recommended to circumstances, her stay mirroring that of the younger man. She died prevent infection with N. Powieri? after 5 days in the hospital. The Centers for Disease Control and Prevention examined to continue the Case Study go to Cose Study Part 2 of the end of the both patients and determined that they died of primary amebic chapter MICO CASE STUDY Part 2 of concern to the CDC was the fact that neither patient could be linked to the warm water springs. lakes, or rivers that are breeding grounds for the amoeba. As an investigation of both cases began, health of- ficials worried that they could be dealing with a strain of Noe- gleria fowleri that had become more virulent or that had evolved a new means of entering the body. One commonality investigators did discover was that both patients used neti pots filled with warm tap water to rinse their sinuses. A neti pot resembles a small teapot with a long spout, and is used by some people to rinse the nasal passages with a saline solution as a treatment for colds, aller gles, or congestion. Investigators collected water samples from both homes and testing revealed the presence of N. fowleri in each case. These two incidents were the first time PAM was associated with the presence of N. fowleri in house- hold plumbing served by treated municipal water supplies, as well as the first time that infection with the amoeba was linked to use of a neti pot or similar nasal irrigation device. Nfowleri grows at temperatures up to 46’C, but can survive for many hours or even higher temperatures. What biological structure could N. fowlerl use to survive the hottest temperatures seen in household water systems? What additional precautions as to the avoidance of infection may have been issued based on the information seen in this part of the Case Study? Yoder, J. et al. 2012. Primary amebic meningoencephalitis deaths associated with sinus irrigation using contaminated tap water. Clin Infe Dis 55:e79-e85. To conclude this Case Study, go to Connect . Get Nursing Assignments Help