failure to thrive diagnostic criteria and diff dx h and p key points dx testing in the evaluation
TRANSCRIPT
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Failure to thriveFailure to thrive
Diagnostic criteria and diff dxDiagnostic criteria and diff dx
H and P key pointsH and P key points
Dx testing in the evaluationDx testing in the evaluation
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18 month female 18 month female difficulty gaining weightdifficulty gaining weight
• 2 previous visits, noted to have slowing in her weight gain
• Weight previously followed 75% slipped to 50 th
• This visit wt below the 5 th percentile for age
• Ht has continued along the same 50 th % trajectory
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Scope of the problemScope of the problem
• FTT used to describe children with poor growth; serial measurements of wt, ht, ofc compared with population growth averages
• Growth over time helpful; constitutional delay children may grow consistently below (but parallel) curves
• Wasting refers to deficit in wt to ht or type 1 FTT
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The broad criterionThe broad criterion
• Decrease in wt, ht or ofc percentiles that crosses 2 major trajectories in downward trend
• Weight for length below the 5th percentile (in absence of serial measurements)
• Decreased mid-arm circumference-to-head circumference ratio
• Weight below the 5 th percentile
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Non-organic causesNon-organic causes
• Family dysfunction (divorce, spousal abuse, chaotic family style)
• Parental dysfunction (psychosis, drug or alcohol abuse)
• Parent-child interaction dysfunction• Isolation or lack of support (no family or
extended family)• Lack of preparation for parenting or ignorance• Child abuse/neglect• Unusual food fad diet
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Organic causes of FTTOrganic causes of FTT
• Decreased caloric intakepoor feeding (neuro/feeding disorders)decreased appetite (chronic disease)vomiting (gerd, ps, icp)chronic infection (giardea,etc)mucosal abnormalities (celiac, ibd)pancreatic insufficiency (cf, etc)enzyme deficiencies
allergic gastroenteropathy
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FurthermoreFurthermore
• Increased losses and metabolic disorders
protein losing enteropathy
metabolic disorders
bile salts def
lympangiectasia
• Increased caloric requirments
HyperthyroidismChronic
diseases: chd, chronic resp disease, malignancy, ibd,
immunodeficiency
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With apologies for the listWith apologies for the list
• Parents and child interact warmly in office
• Family hx noncontributory
• Diet reasonably varied, good quantity
• Parents are stable, good mental health, no drugs or abuse suspected
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History and physicalHistory and physical
• Gives direction to the work; AJDC study of details the futility of investigations unless suggested in the h and p evaluation
• 3 day diary always helpful in the history to corroborate the adequacy of caloric intake
• Stool consistency may indicate malabsorption (malodorous, foamy, floating for fat malabsorption)
• Vomiting hx directs toward broad differential
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Physical examPhysical exam
• Malnutrition: hair texture and color, skin
• Respiratory: lung sounds, clubbing
• Heart disease: murmurs, PMI heave, sweaty babies
• GI dis: inc L/S, perianal disease, guiac
• Neuro: wasting, abnl tone
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The history continuesThe history continues
• Parents report pt is comfortable, 3 loose stools a day
• FT, SVD, 3750 gm.
• Breast to 6 months then formula; baby foods at 5 months; good mix of table foods
• No sig infections, no hosp
• Northern european descent; neg fam hx
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The asthenic toddlerThe asthenic toddler
• Thin child in no distress
• General exam is normal
• Abdomen is soft nontender; perhaps slightly distended
• Neuro reveals interactive child, wiry, nml tone, nml reflexes
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• The 3 days diary gives detailed account of foods and milk
• Look for excessive fluid intake, inappropriate milk or juice intake
• Basic labs: CBC, ESR, chem 7 (bun/cr, CO2), TPro
• As indicated: stool fat, occult blood, white cells, O&P or elisa for giardia
• As indicated: sweat, HIV, TB skin test
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H & P: loose stools?? H & P: loose stools??
• The loose stools raises suspicion for infection and/or malabsorption
• Stool for O & P, elisa giardia, fecal fat, white cells
• Sweat chloride and celiac antibodies
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Los resultadosLos resultados
• Celiac panel is positive
• Transglutaminases (if ordered) 195 units (0-20 nml range)
• Antiendomysial antibody is pos at 1:40 (nml less than 1:20)
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Celiac diseaseCeliac disease
• Production of local and systemic antibodies
• Ig A antireticulin Ab and IgA antiendomysial Ab are specific markers for celiac disease
• Tissue transglutaminase Ab has recently been identified as the autoantigen recognized by endomysial Ab (most sensitive marker)
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Referral to GIReferral to GI
• Esophagogastroduodenoscopy
• Bx of small bowel consistant with celiac disease
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Celiac diseaseCeliac disease
• Intolerance to gluten of wheat, barley, rye, and oats
• More common in whites, nearly nonexistent in Africa, Asia
• 1:300 in western Ireland, 1:5000 in Minnesota, 2 % in Sweden and 1 in 50 in a high risk population (GI clinic waiting room)
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More??More??
• Familial tendency follows polygenic inheritance• Strong association between celiac dis and HLA
antigens• Interaction between genetics and environmental
exposure• Wheat gluten is water insoluble protein left after
starch extraction• Gliadin, a complex protein, is a fraction of the
wheat gluten• T cell response to gluten in the lamina propria
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Utility of endoscopy and BxUtility of endoscopy and Bx
• Small bowel mucosal flattening
• Lymphocytic infiltration in lamina propria, elongation of the crypts, villous atrophy
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Treatment of CeliacTreatment of Celiac
• Mainstay is avoidance of gluten
• Quite difficult to achieve in typical Western diet
• Catch up growth can be rapid and complete in 15 months after effective avoidance
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Sweaty babiesSweaty babies
• 10 week old male with poor weight gain
• Sweaty babies suggests adrenergic overdrive
• Gallop rhythm, heavy PMI
• Liver edge is down
• Radiograph of chest
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6 month comes pale and below 5 th 6 month comes pale and below 5 th percentpercent
• Renal lesions are “occult”
• Bilateral abdominal masses
• Cr 5.8
• Posterior urethral valves
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Is it a real condition?Is it a real condition?
• 15 month old female falls off the curves
• CO2 12 on first determination; 15 on repeat
• Proximal absorption defect seen in toddler years
• Responds to large doses of bicarb (10 per kg divided)
• Appetite improves and weight gain is seen
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Newborn screeningNewborn screening
• 6 month old comes in with weight down
• She appears puffy
• Rsv then chronic congestion
• T Pro depressed
• False negative from NB screen