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UF Service Trips Common Clinical Issues in Children. Rob Lawrence, MD Pediatric Infectious Diseases. Outline Objectives. An Approach to Diagnosis Growth / Development / Anemia Abdominal Pain / Diarrhea / Intestinal parasites Dengue / Malaria TB.
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UF Service TripsCommon Clinical Issuesin Children Rob Lawrence, MD Pediatric Infectious Diseases
OutlineObjectives • An Approach to Diagnosis • Growth / Development / Anemia • Abdominal Pain / Diarrhea / Intestinal parasites • Dengue / Malaria • TB
Approach to Diagnosisin Resource Poor Settings • Ethics treat them as you would every patient, including sensitivity to cultural issues. • Emphasize history and physical diagnosis to get to the diagnosis. • Differential Diagnosis common/endemic > urgent/critical=triage > treatable. • What are you set up / prepared to manage? • Empiric therapy lower threshold, need for follow-up. • Follow-up within their health system + education which is culturally appropriate.
Growth, Development and Anemia • Growth: WHO Child Growth Standards Multicentre Growth Ref. Study (MGRS) Stunting, wasting, malnutrition • Development: Assessment Tools Observation • Anemia: Age, WHO standards Correlation with IQ, development and association with intestinal parasites • Breastfeeding: WHO Recommendations MGRS – standards, potential AHRQ report #153 -07-E007 www.ahrq.gov Breastfeeding: More than just good nutrition. Lawrence RM Peds in Rev 2011;32;267.
Growth Stunting Underweight Weight-for-age is less than -2 SD (below the mean) Inadequate nutrition over a shorter period of time Linear growth maintained Head circumference growth still OK (spares the brain) • Height-for-age is less than -2 SD (below the mean) • Chronic undernutrition - retards linear growth
Growth Wasting Severe Wasting Weight-for-height less than -3 SD (below the mean) Severe acute malnutrition Odds ratio of mortality ~= 9x mortality risk for children > -1 SD* • Weight-for-height less than -2 SD (below the mean) • Acute malnutrition with probable micronutrient deficiencies • Increased risk of infections, diarrheal disease, death • Odds ratio of mortality ~= 2x mortality risk for children > -1 SD* Black RE et al. Lancet 2008, 371:243-60. Maternal and Child Undernutrition Study Group:
Kwashiorkor • Growth Failure • Wasting – muscles • Edema – abdomen, scrotum, feet • Hair changes • Mental changes / activity • Dermatosis • Appetite diminished • Anemia • Fatty lliver
Principles of Treatment forSevere Malnutrition Ashworth A et al. Child Health Dialogue Issue 3 + 4, 1996 10 Steps – Guidelines for treatment of Severely Malnourished Children
Malnutrition • Calories • Protein • Micronutrients Vitamin A Iron Iodine Zinc Disease Control Priorities in Developing Countries Stunting, Wasting and Micronutrient Deficiency Disorders Caulfield LE, Richard SA et al. Chapter 28
Anemia Screening: all children 1-6 years old, girls / women >12 years old Treatment: 3-5 mg elemental iron/kg/day with juice / water between meals (not with milk), 3 months – build iron stores without ongoing losses, diarrhea / blood in stool / parasites, menses, chronic undernourished due to lack of appropriate foods)
Abdominal Pain DiarrheaIntestinal Parasites • Inter –related and overlapping diarrhea and intestinal parasites can be the cause of pain • Abdominal pain has a broader, multi-organ differential • Diarrhea can be acute or chronic and has a broad etiologic differential • Intestinal parasitic infections tend to be chronic with non-specific symptoms
Abdominal Pain • Careful history and physical exam – associated symptoms • Acute - look for a surgical condition • Chronic – consider peptic disorders, reflux, esophagitis, gastritis, ulcers, H. pylori, parasites, recurrent abdominal pain, UTI, abdominal migraines, inflammatory bowel disease • Red Flag Symptoms – weight loss, bilious emesis, intermittent diarrhea + constipation, bloody diarrhea, fever, arthritis/arthalgias, hepatosplenomegaly, dysphagia, respiratory symptoms
Diarrhea • Acute diarrhea – watery (volume), viruses rotavirus, adenovirus, enteroviruses, food intolerance if < 24 hours, less commonly Salmonella, E. coli, Shigella, Cryptosporidium, Giardia, Campylobacter • Chronic diarrhea (>14 days) – acute + malnutrition (Zn or Vit. A), or recurrent episodes, bacteria – E.coli (EAEC, EPEC), Shigella, Salmonella, Cryptosporidium, Cyclospora, Giardia – alternating with constipation +/- abdominal pain think parasites • Acute bloody diarrhea – small frequent bloody stools, pain, tenesmus – Shigella, Campylobacter, Entamoeba histolytica, +antibiotics or hospitalization consider Clostridium difficile, • Diagnosis: labsonly for chronic diarrhea, or persistent bloody d. • Therapy: avoid antibiotics unless febrile, anti-diarrheal meds are ineffective / not advised in children, ORT, nutrition, education Keusch GT et al. Diarrh. Diseases. C 19 Dis Control Priorities in Dev Countries
Important Arthropod-borne Illness Malaria - 2009 Dengue - 2010 WHO Reports
Comparison Dengue Malaria Children 3-36 months, pregnancy Incubation 12-35 days Uncomplicated fever + non-specific sxs Complicated cerebral, hypoglycemia, acidosis , renal / liver failure, anemia, ARDS, CV collapse Recrudescence, relapse, repeat Prophylaxis Dx; clinical, Giemsa stained smears, parasite density Rx: various drugs specific types, Plasmodium (4)– falciparum, vivax, ovale, malariae • 50-100 million infections / yr • Incubation 3-14 days (4-7) • Asymptomatic – initial episodes, mild febrile illness • Dengue Fever –fever -> 41o , bone, headache,hematologic abnormalities, hyponatremia • Dengue Hemorrhagic Fever / Shock –biphasic fever, thrombocytopenia, ↑ Hct, low albumin + Na, DIC, acidosis, CV collapse • Severe disease = prior infection(s) • Mosquito protection! • Dx: clinical syndrome / endemic • Rx: supportive!! • Serotypes: DenV1-4
Tuberculosis • Clinical TB Disease 1o pulmonary, LN, other organs Cough, fever, weight loss, night sweats, malaise, hemoptysis • Latent TB Infection[LTBI] Rarely addressed TST, CXR, No Sx • BCG (Bacillus of Calmette-Guérin)Scars - deltoid Protection – meningitis, miliary TB Effect on TST – cutoffs, < 5yrs, >15 mm • Multi-drug Resistant TB = MDR-TB Poor-compliance, mutations Co-infection with HIV + TB Inadequate infrastructure / Public Health / DOT
Tuberculosis • Dx: clinical, CXR, smears, AFB, uncommonly culture, DNA • Rx: Isoniazid Rifampin (rifamycins) Pyazinamide Ethambutol 2o line agents Directly Observed Therapy (DOT) Public Health
BCG Vaccination PolicyA = Universal BCG vaccination B = BCG in the past, C = never gave BCG