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Nutrition Interventions for Children with Special Health Care Needs

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Chapter 21 - <strong>Nutrition</strong> <strong>Interventions</strong> <strong>for</strong> Metabolic Disorders<br />

Table 21-1: Some Metabolic Disorders Amenable to <strong>Nutrition</strong>al Therapy*<br />

Adjunct<br />

treatment<br />

Biochemical features <strong>Nutrition</strong>al<br />

treatment<br />

Disorder Enzyme: missing<br />

or inactive<br />

Amino Acid Disorders<br />

Food: low protein<br />

Phenylketonuria Phenylalanine hydroxylase �� blood phe<br />

<strong>Special</strong>ized <strong>for</strong>mula:<br />

<strong>with</strong>out phenylalanine,<br />

supplement tyrosine<br />

� phenylketones in urine<br />

Progressive, severe MR, which<br />

can be prevented by early<br />

treatment<br />

Nitisinone†<br />

Food: low protein<br />

Vomiting; acidosis; diarrhea;<br />

FTT; hepatomegaly; rickets<br />

Tyrosinemia type I Fumaryl-acetoacetate<br />

hydrolase<br />

<strong>Special</strong>ized <strong>for</strong>mula:<br />

<strong>with</strong>out tyrosine,<br />

phenylalanine, and<br />

methionine<br />

� blood/urine tyrosine,<br />

methionine; � urine<br />

parahydroxy derivatives of<br />

tyrosine;<br />

240 <strong>Nutrition</strong> <strong>Interventions</strong> <strong>for</strong> <strong>Children</strong> With <strong>Special</strong> <strong>Health</strong> <strong>Care</strong> <strong>Needs</strong><br />

Liver cancer<br />

Betaine, folate, vitamin<br />

B12,<br />

Food: low protein<br />

Detached retinas;<br />

thromboembolic and cardiac<br />

disease; mild to moderate<br />

MR; bone abnormalities; fair<br />

hari, skin; � methionine,<br />

homocysteine<br />

Homocystinuria Cystathionine synthase or<br />

similar<br />

?vitamin B6 if folate levels<br />

are normal<br />

<strong>Special</strong>ized <strong>for</strong>mula:<br />

<strong>with</strong>out methionine,<br />

supplement L-cystine<br />

Urea Cycle Disorders<br />

L-carnitine,<br />

phenylbutyrate,‡<br />

L-citrulline, L-arginine<br />

Food: low protein<br />

Vomiting; seizures; sometimes<br />

coma � death. Survivors<br />

usually have MR, � plasma<br />

ammonia, glutamine<br />

Ornithine transcar<br />

bamylase<br />

Ornithine<br />

transcarbamylase<br />

deficiency<br />

Formula: <strong>with</strong>out nonessential<br />

amino acids<br />

Hemodialysis or peritoneal<br />

dialysis during acute<br />

episodes

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