Download Preventing Aspiration in Older Adults with Dysphagia

general assessment series
Best Practices in Nursing
Care to Older Adults
From The Hartford Institute for Geriatric Nursing, New York University, College of Nursing
Issue Number 20, Revised 2012
Editor-in-Chief: Sherry A. Greenberg, PhD(c) MSN, GNP-BC
New York University College of Nursing
Preventing Aspiration in Older Adults with Dysphagia
By: Norma A. Metheny, RN, PhD, FAAN, Saint Louis University School of Nursing
WHY: Aspiration (the misdirection of oropharyngeal secretions or gastric contents into the larynx and lower respiratory tract) is common in
older adults with dysphagia and can lead to aspiration pneumonia. In fact, it has been suggested that dysphagia carries a sevenfold increased
risk of aspiration pneumonia and is an independent predictor of mortality (Singh & Hamdy, 2006). Early recognition of dysphagia and
intervention in hospitalized patients is advised to reduce morbidity and use of hospital resources (Altman et al., 2010).
TARGET POPULATION: Dysphagia is common in persons with neurologic diseases such as stroke, Parkinson’s disease, and dementia.
Aspiration occurs in about 40% to 50% of stroke patients with dysphagia (Marik & Kaplan, 2003). The older adult with one of these
conditions is at even greater risk for aspiration because the dysphagia is superimposed on the slowed swallowing rate associated with normal
aging. Conditions that suppress the cough reflex (such as sedation) further increase the risk for aspiration.
BEST PRACTICES: ASSESSMENT AND PREVENTION ASSESSMENT
Videofluoroscopy is considered the gold standard to study the mechanisms of dysphagia; if unavailable, fiberoptic endoscopic evaluation may
be used instead (Rofes et al., 2011). Others recommend these tests only for patients who fail a reliable clinical swallowing assessment (Leder
et al., 2012)
Clinical Symptoms of Aspiration:
• Sudden appearance of respiratory symptoms (such as severe coughing and cyanosis) associated with eating, drinking, or regurgitation
of gastric contents.
• A voice change (such as hoarseness or a gurgling noise) after swallowing.
• Small-volume aspirations that produce no overt symptoms are common and are often not discovered until the condition progresses
to aspiration pneumonia.
Aspiration Pneumonia:
• Older persons with pneumonia often complain of significantly fewer symptoms than their younger counterparts; for this reason,
aspiration pneumonia is under-diagnosed in this group.
• Delirium may be the only manifestation of pneumonia in elderly persons.
• An elevated respiratory rate is often an early clue to pneumonia in older adults; other symptoms to observe for include fever, chills,
pleuritic chest pain and crackles.
• Observation for aspiration pneumonia should be ongoing in high-risk persons.
PREVENTION OF ASPIRATION DURING HAND FEEDING:
The following actions may be of some benefit during hand feeding:
• Provide a 30-minute rest period prior to feeding time; a rested person will likely have less difficulty swallowing.
• Sit the person upright in a chair; if confined to bed, elevate the backrest to a 90-degree angle.
• The chin-down or chin-tuck maneuver is widely used in dysphagia treatment, although it does not have a precise anatomical definition
(Okada et al., 2007). The extent to which this maneuver is effective is unclear. A recent study of 47 patients with a videofluoroscopic
diagnosis of aspiration found only 55% avoided aspiration during the chin-down posture (Terre & Mearin, 2012).Swallowing studies
may be needed to determine which individuals are most likely to benefit from this position.
• Adjust rate of feeding and size of bites to the person’s tolerance; avoid rushed or forced feeding.
• Alternate solid and liquid boluses.
• Vary placement of food in the person’s mouth according to the type of deficit. For example, food may be placed on the right side of the
mouth if left facial weakness is present.
• Determine the food viscosity that is best tolerated by the individual. For example, some persons swallow thickened liquids more
easily than thin liquids. However, a recent study found that even in known thin liquid aspirators, offering water did not increase the
incidence of aspiration pneumonia (Frey & Ramsberger, 2011).
• Be aware that some patients may find thickened liquids unpalatable and thus drink insufficient fluids (Colodny, 2005).
• Minimize the use of sedatives and hypnotics since these agents may impair the cough reflex and swallowing.
• Medications that dry up secretions should be avoided since they make it more difficult for patients to swallow (Marik, 2011).
• Evaluate the effectiveness of cueing, redirection, task segmentation and environmental modifications (minimizing distractions) as
alternatives to hand feeding. (See Try This:® Assessing Eating and Feeding Issues in Older Adults with Dementia).
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PREVENTION OF ASPIRATION DURING TUBE FEEDING:
Tube feeding is not necessary for all patients who aspirate (Marik, 2011). However, short-term tube feeding may be needed for elderly
patients with severe dysphagia and aspiration in whom improvement of swallowing is likely to occur (Marik, 2011). Results from a clinical
trial suggest that patients with dysphagic stroke should be fed early by nasogastric tube and then transitioned to oral feeding as their
dysphagia resolves (Dennis et al., 2005). Patients whose dysphagia does not resolve may ultimately require placement of a percutaneous
gastrostomy tube.
For patients with tube feedings, the following considerations are important:
• Keep the bed’s backrest elevated to at least 30º during continuous feedings.
• When the tube-fed person is able to communicate, ask if any of the following signs of gastrointestinal intolerance are present: nausea,
feeling of fullness, abdominal pain or cramping. These signs are indicative of slowed gastric emptying that may, in turn, increase the
probability for regurgitation and aspiration of gastric contents.
• Measure gastric residual volumes every 4 to 6 hours during continuous feedings and immediately before each intermittent feeding.
This assessment is especially important when the tube-fed person is unable to communicate signs of gastrointestinal intolerance.
There is no convincing research-based information regarding how much gastric residual volume is ‘too much.’
• Use of a promotility agent should be considered when an adult patient has two or more gastric residual volumes ≥ 250 ml (Bankhead et al., 2009).
• The incidence of pneumonia is not different in patients with nasogastric tubes and percutaneous endoscopic tubes (Gomes et al., 2010).
However, a gastrostomy tube is more comfortable for the patient than is prolonged use of a nasogastric tube.
PREVENTION OF ASPIRATION PNEUMONIA BY ORAL CARE:
Missing teeth and poorly fitted dentures predispose to aspiration by interfering with chewing and swallowing. Infected teeth and poor oral
hygiene predispose to pneumonia following the aspiration of contaminated oral secretions. Tube feeding in elderly persons is associated with
significant pathogenic colonization of the mouth, more so than that observed in those who received oral feedings.
There is evidence that providing regular dental care and cleaning the elder person’s teeth with a toothbrush after each meal lowers the risk
of aspiration pneumonia. Development and maintenance of an oral hygiene program is a critical step in preventing pneumonia in nursing
home residents (El-Solh, 2011).
MORE ON THE TOPIC:
Best practice information on care of older adults: www.ConsultGeriRN.org.
Altman, K.W., Yu, G.P., & Schaefer, S.D. (2010). Consequence of dysphagia in the hospitalized patient: Impact on prognosis and hospital
resources. Archives of Otolaryngology-Head & Neck Surgery, 136(8), 784-789.
Bankhead, R., Boullata, J., Brantley, S., Corkins, M., Guenter, P., Krenitsky, J., Lyman, B., Metheny, N.A., Mueller, C., Robbins, S., Wessel, J.,
& A.S.P.E.N. Board of Directors. (2009). A.S.P.E.N. enteral nutrition practice recommendations. Journal of Parenteral and Enteral
Nutrition. 33(2), 122-167. doi: 10.1177/0148607108330314
Colodny, N. (2005). Dysphagic independent feeders’ justifications for noncompliance with recommendations by a speech-language
pathologist. American Journal of Speech-Language Pathology, 14(1), 61-70.
Dennis, M.S., Lewis, S.C., & Warlow, C. (2005). Effect of timing and method of enteral tube feeding for dysphagic stroke patients (FOOD): A
multicentre randomized controlled trial. Lancet, 365, 764-772.
El-Solh, A.A. (2011). Association between pneumonia and oral care in nursing home residents. Lung. 189(3), 173-180.
Frey, K.L. & Ramsberger, G. (2011). Comparison of outcomes before and after implementation of a water protocol for patients with
cereberovascular accident and dysphagia. Journal of Neuroscience Nursing, 43(3), 165-171.
Gomes, C.A., Lustosa, S.A., Matos, D., Andriolo, R.B., Waisberg, D.R., & Waisberg, J. (2010). Percutaneous endoscopic gastrostomy versus
nasogastric tube feeding for adults with swallowing disturbances. Cochrane Database of Systematic Reviews. (11)DC008096.
Leder, S.B., Suiter, D.M., Warner, H.L., Acton, L.M., & Swainson, B.A. (2012). Success of recommending oral diets in acute stroke patients
based on passing a 90-cc water swallow challenge protocol. Topics in Stroke Rehabilitation, 19(1), 40-44.
Marik, P.E. (2011). Pulmonary aspiration syndrome. Current Opinion in Pulmonary Medicine, 17, 148-154.
Marik, P.E., & Kaplan, D. (2003). Aspiration pneumonia and dysphagia in the elderly. Chest, 124, 328-336.
Okada, S., Saitoh, E., Palmer, J.B., Matsuo, K., Yokoyama, M., Shigeta, R., & Baba, M. (2007). What is the chin-down posture? A
questionnaire survey of speech language pathologist in Japan and the United States. Dysphagia, 22(3), 204-209.
Rofes, L., Arreloa, V., Almirall, J., Cabre, M., Campins, L., Garcia-Peris, P., Speyer, R., & Clave P. (2011). Diagnosis and management of
oropharyngeal dysphagia and its nutritional and respiratory complications in the elderly. Gastroenterology Research and Practice.
Volume 2011, 1-13. doi:10.1155/2011/818979
Singh, S., & Hamdy, S. (2006). Dysphagia in stroke patients. Postgraduate Medical Journal, 82(968), 383-391.
Terre, R., & Mearin, F. (2012). Effectiveness of chin-down posture to prevent tracheal aspiration in dysphagia secondary to acquired brain
injury. A videofluoroscopy study. Neurogastroenterology & Motility, 24(5), 414-419.
general assessment series
Best Practices in Nursing
Care to Older Adults
A series provided by The Hartford Institute for Geriatric Nursing,
New York University, College of Nursing
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