

Patient Populations at Nutritional Risk
Most
healthy people have adequate amounts of nutrients stored for three to five days
post-operatively as long as fluid intake remains sufficient. There are
some groups of people who cannot tolerate even this short episode of inadequate
nutrition. Patients with poor nutritional status prior to surgery such as
chronic alcoholics and other substance abusers, people on very restrictive
diets, patients undergoing chemotherapy or radiation therapy need to maintain a
steady supply of nutrients. This is also true of patients with diseases of
the gastrointestinal tract, such as Crohn's disease, medically compromised
patients, and the diabetic patient. The medically compromised may include
patients with chronic cardiovascular disease or heart failure, end stage liver
or kidney disease, and chronic pulmonary disease. Nutrient requirements
increase due to blood loss, increased catabolism, tissue regeneration, and
maintenance of the immune response. Populations most at risk for poor
nutrition are those with unexplained weight loss and the elderly. In
addition, there are many other patients at high risk for marginal nutrient
intakes; see
Table 1 for more details.4,33,40
Unexplained weight loss, regardless of body size, represents a catabolic state during which both fat mass and lean body mass are lost. This often occurs as a result of acute conditions, such as cancer, and chronic disease, such as poorly controlled diabetes, as well as secondarily to some medical regimens such as chemotherapy. These people are at high risk for problems with healing following dental procedures.
The elderly are often at nutritional risk due to a number of
factors including: physiologic changes, the presence of multiple chronic
diseases, polypharmacy, and psychosocial issues. Physiological changes
include a decreased ability to absorb nutrients, such as vitamin B12, as well as
more advanced periodontal disease, atrophy of saliva glands, alterations in
taste, and dysregulation of the immune response. One study found as many
as six diseases among one group of elderly.36
Findings suggest that 30% of all prescriptions are bought by the elderly along
with 40% of all over-the-counter medications.36
Medications such as prednisone increase the need for protein, calcium, vitamin
D, and folate. Diuretics like hydrochlorothiazide and Lasix increase the
need for potassium, magnesium, and calcium. Psychosocial issues such as
depression and isolation also lead to poor nutrient intakes and increased rates
of alcoholism among elderly.