extern conference 4 oct 2007. history a 4-month-old boy chief complaint: high-grade fever 1 day ...
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History
A 4-month-old boy Chief complaint: high-grade fever 1 day Present illness:
3 d PTA he had low grade fever with no other symptoms.
1 d PTA he had high grade fever with chill without URI symptoms, N/V, or diarrhea.
He exhibited lethargy and food refusal. The bulging of his anterior fontanelle was observed. He had no seizure.
History
Present illness: He took only acetaminophen every 4 hours but
his symptoms did not relieved. On the day of admission, he sought for a doctor
and was diagnosed as brain edema. He was suggested to go to a hospital.
He had no history of trauma. Nobody in his family had symptoms like him.
History
Pertinent underlying disease: none Significant medical history: none (healthy) Significant neonatal history: none Developmental history: normal
Smile, hold head up, crawl, localize sounds, glare Dietary history: absolute breast feeding
History
Immunization: BCG, 1OPV, 1DPT, 2HBV Current medication: none Significant family history:
Father - HBV carrier Mother - Euthyroid goiter
Physical examination
T 38.5oC, RR 50/min, HR 180/min, BP91/62mmHg
BW 8.1 kg , Ht 50 cm GA: look sick, drowsiness, not pale, no
jaundice, no edema, dry lips, slightly sunken eye ball, anterior fontanelle-bulging, 2x3 cm
HEENT: pharynx-not injected, normal TM both ears
Physical examination
RS: normal breath sound, no adventitious sound
CVS: normal S1&S2, no murmur Abd: soft, not tender, liver and spleen-not
palpable Genitalia: WNL
Physical examination
CNS: pupil 3 mm BRTL, no facial palsy motor power grade IV+ all DTR 3+ all Stiff neck : positive Brudzinski’s sign : positive Kernig sign : positive
Problem list Fever for 3 days Drowsiness for 1 day Bulging ant.fontanelle and presence of
meningeal signs Mild dehydration
Definition of fever temperature -Rectal >38ºc
-Oral >37.6
-Axillary >37.3 Acute fever - fever with source
- fever without source
History taking Fever : character, pattern, duration Associate organ/systemic symptom
- RS : cough, rhinorrhea, dyspnea
- GI : nausea, vomiting, diarrhea,
- GU : abnormal urine
- NS : alteration of consciousness, seizure, severe headache
History taking Behavior activity e.g. drowsy, food/milk
intolerance Sick contact Previous treatment, past medication Underlying disease, recent immunization
Physical Examination Vital signs : GA : irritability, sign of dehydration, pale,
jaundice HEENT : TM, nasal discharge, tonsils &
pharynx Skin rash , sign of soft tissue infection CVS : new onset of murmur, embolic
phenomenon
Physical Examination RS : breath sound, adventitious sound,
percussion Abdomen : BS, hepatosplenomegaly NS : level of consciousness, fontanelle, motor
system, meningeal irritation sign Bone and joint system
Investigation CBC ,UA Indication for LP in children with fever
- alteration of consciousness
- age<18 months with first episode of febrile seizure or complex febrile seizure
- age<3 months with sepsis
- suspected meningitis
Clinical presentation Depend on the patient’s age
- newborn: nonspecific
- infancy: fever, vomiting, irritability, convulsion, tense& bulging fontanelle
- children: fever, chills, vomiting, severe headache
Meningococcemia : purpura fulminans
Clinical presentation Meningeal irritation sign
- significantly less frequent in neonates
- Brudzinski sign, stiff neck, Kernig sign
Kernig’s signSevere stiffness of the hamstrings causes an inability to straighten the leg when the hip is flexed to 90 degrees.
Brudzinski’s sign
Severe neck stiffness causes a patient's hips and knees to flex when the neck is flexed.
AGE COMMON ORGANISM EMPIRICAL ANTIBIOTIC
Newborn infants GBS
E.coli and other gram negative enteric bacteria enterococci
Ampicillin + Gentamicin
Or Cefotaxime
Infants & children < 5 yo H.influenzae type b
S.pneumoniae
Salmonella
N.meningitidis
Cefotaxime
Children older than 5 yo S.pneumoniae
N.meningitidis
Cefotaxime
Treatment Dexamethasone in Hib meningitis with in min
after first dose of ATB can reduce risk for hearing and neurologic complication
- 0.15 mg/kg q 6hr for 4 days or
0.4 mg/kg q 12 hr for 2 days
Diagnosis definite diagnosis: CSF examination and C/S CSF gram stain Rapid antigen testing:
GBS, E.coli K1, S.pneumoniae, Hib, N.meningitidis
Hemoculture
Investigation :admission D1 Blood for H/C , CBC , BUN , Cr ,
Electrolyte , BS LP and CSF analysis, CSF culture, gram stain UA ,MUC
Lab : Admission day1 CBC : Hct 35.4, WBC 21160, N72.7, L 15.3,M11.9,
Plt 371,000, MCV79.2 BUN7, Cr0.3 , Na133, K 4.3, Cl 97, HCO3
16,AG20, BS 137 U/A : pH 6.0 ,sp.gr1.015, WBC0-4, Glu3+, Protein -,
Ketone - CSF : Glu 56, TP 100, RBC 10,000, WBC 1,960
(correct WBC : 1,946) CSF G/S : no bacteria was seen, few PMN
Lab : Admission Day2 Bacterial Ag profile: Hib, N. Meningitidis A,
B/Ecoli, C, Y/W, Strep. Agalactiae, Strep. Pneumo : All Negative
CSF profileCondition Normal CSF Normal CSF
(newborn)
Bacterial meningitis
Color
Pressure (mm.H2O)
WBC (mm3)
Protein (mg/dl)
Glucose (mg/dl)
Comments
Clear
50-80
<5, 75% lymphocyte
20-30
>50, 75% BS
Clear
0-30,
2-3% PMN
19-149
32-121
Cloudy
Usually elevated
> 1000
PMNs > 50%
Usually 100-500
Depressed
Organism may be seen by gram stain/
culture
CSF profileCondition Viral
meningitis
TB
meningitis
Pressure (mm.H2O)
WBC (mm3)
Protein (mg/dl)
Glucose (mg/dl)
Comments
Normal or slightly elevated
100-500
PMN<40%
50-100>30
Usually elevated
10-500, PMN early but lymphocyte predominated
100-3,000<50
AFB almost negativeM.TB may be detected by
PCR/C/S
Nelson Textbook of Pediatrics 16th ed.
Treatment1 1.Empirical antibiotics Cefotaxime (300mg/kg/day) 300mg iv q 6hr Gentamicin (5mg/kg/day) 15mg iv q 8hr 2.supportive treatments Paracetamol(120mg/5ml)4ml oral prn for fever
q4-6 hr IV fluid
Lab : Admission Day2 H/C : gram –ve rod MUC : no growth Bacterial Ag profile: Hib, N. MeningitidisA,
B/Ecoli, C, Y/W, Strep. Agalactiae, Strep. Pneumo : All Negative
TreatmentCausal organism Duration(days)
GBS,L.monocytogenase 14-21
H.influenzae,S.pneumoniae
N.meningitidis
Salmonella
Gram negative bacilli
10-14
7-10
28
21
-Add ciprofloxacin in Salmonella meningitis to prevent relapse
-Change ATB to PGS in mennigococcal meningitis if sensitive
Lab : Admission Day3 CSF culture : Salmonella groupD H/C :Salmonella groupD Drug sensitivity : Cefotaxime, Ciprofloxacin
Repeated LP For diagnosis : in questionable case repeated
LP in 24 hrs For evaluate response of treatment(48-
72hrs after treatment)- cases with poor response- resistant organism- neonatal meningitis
-those received steroid
Complication Seizure Subdural effusion 20-30%,subdural empyema
1% SIADH Hearing loss (require hearing evaluation at the
end of treatment) Hydrocephalus brain abscess