The oral cavity is an environment that consists of numerous species of microorganisms (both bacterial and fungal) together with their biofilms and cytokines (chemicals). Most of these organisms are beneficial and are thus termed normal flora. In cases of poor hygiene, the oral cavity is invaded by disease causing organisms which increase the risk of aspirating in bedridden individuals. In this article we discuss the relationship between oral care and aspiration pneumonia.
It has been established that the risk for aspiration among patients on long term care is markedly increased if there is a concomitant disease in the cavity. Examples of these diseases and medical conditions include periodontal diseases and dental caries. Other conditions that may worsen the situation include the existence of swallowing difficulties, inability to feed and poor motor coordination. The elderly are at a higher risk of suffering from this conditions than the general population.
It has been shown through research that close to 15% of adults have swallowing difficulties. This figure appears to increase as we advance in age due to what are believed to be changes taking place in the physiology and anatomy of the oropharynx. At the age of 80 years, it appears that almost half of the people have varying degrees of swallowing challenges. Other factors that may contribute to the problem include stroke, cerebral palsy and dementia among others.
One of the most important interventions that should be considered is a change in posture during swallowing. A posture that will reduce the risk of aspiration should be adopted. In general, this should be less than 90 degrees from the horizontal. Additional maneuvers that are aimed at optimizing on this can be taught to both the patient and their caregiver over several sessions.
The patients in long term care typically receive numerous medications for their many medical conditions. Some of these medications have the potential to interfere with the process of swallowing. It is important for the doctor to evaluate the medications and to determine which among them may be causing the problem. As this is being done, drugs that help reduce the amount of secretions and gastric acid production should be included.
Most of the elderly patients undergoing long term care also suffer a suppression in their oral functions. This is mainly due to their depressed level of consciousness. The cavity is initially abnormally dry resulting in reflex production of mucosal secretions and saliva. The secretions get mixed up with solid residuals that have not been cleared and form a sticky paste which adheres on mucosal surfaces and the teeth.
With self-cleaning mechanisms of the oral cavity suppressed, there is a need to artificially remove this sticky paste from the cavity. If this is not done, the area will be colonized by harmful bacteria that can easily cause upper respiratory tract infections and aspiration pneumonia. Gram negative bacteria are the most commonly isolated organisms in such settings. Even if overt aspiration does not occur, silent aspiration of microorganisms may cause pneumonia.
Good oral hygiene among elderly patients on long term nursing care is an important step in not only lowering the risk of aspiration but also preventing local and systemic complications. Some of these complications include abscess formation infective endocarditis. The poor hygiene in this group of patients is due to a number of factors. Eliminating as many of them as possible significantly reduces the possible risks.
It has been established that the risk for aspiration among patients on long term care is markedly increased if there is a concomitant disease in the cavity. Examples of these diseases and medical conditions include periodontal diseases and dental caries. Other conditions that may worsen the situation include the existence of swallowing difficulties, inability to feed and poor motor coordination. The elderly are at a higher risk of suffering from this conditions than the general population.
It has been shown through research that close to 15% of adults have swallowing difficulties. This figure appears to increase as we advance in age due to what are believed to be changes taking place in the physiology and anatomy of the oropharynx. At the age of 80 years, it appears that almost half of the people have varying degrees of swallowing challenges. Other factors that may contribute to the problem include stroke, cerebral palsy and dementia among others.
One of the most important interventions that should be considered is a change in posture during swallowing. A posture that will reduce the risk of aspiration should be adopted. In general, this should be less than 90 degrees from the horizontal. Additional maneuvers that are aimed at optimizing on this can be taught to both the patient and their caregiver over several sessions.
The patients in long term care typically receive numerous medications for their many medical conditions. Some of these medications have the potential to interfere with the process of swallowing. It is important for the doctor to evaluate the medications and to determine which among them may be causing the problem. As this is being done, drugs that help reduce the amount of secretions and gastric acid production should be included.
Most of the elderly patients undergoing long term care also suffer a suppression in their oral functions. This is mainly due to their depressed level of consciousness. The cavity is initially abnormally dry resulting in reflex production of mucosal secretions and saliva. The secretions get mixed up with solid residuals that have not been cleared and form a sticky paste which adheres on mucosal surfaces and the teeth.
With self-cleaning mechanisms of the oral cavity suppressed, there is a need to artificially remove this sticky paste from the cavity. If this is not done, the area will be colonized by harmful bacteria that can easily cause upper respiratory tract infections and aspiration pneumonia. Gram negative bacteria are the most commonly isolated organisms in such settings. Even if overt aspiration does not occur, silent aspiration of microorganisms may cause pneumonia.
Good oral hygiene among elderly patients on long term nursing care is an important step in not only lowering the risk of aspiration but also preventing local and systemic complications. Some of these complications include abscess formation infective endocarditis. The poor hygiene in this group of patients is due to a number of factors. Eliminating as many of them as possible significantly reduces the possible risks.
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