case presentation francine lu. identifying data gem r. 8/m student roman catholic taytay, rizal...
TRANSCRIPT
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Case PresentationFrancine Lu
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Identifying Data
Gem R.
8/M
student
Roman Catholic
Taytay, Rizal
Informant: mother, 80% reliability
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Chief Complaint
Fever
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History of Present Illness
Fever (Tmax 39.4), remittent
Generalized body weakness
Fronto-temporal headache, 7/10
Paracetamol, unrecalled dose, provided some relief
No rash, no gum bleeding, no epistaxis
2 days PTA
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History of Present Illness
On/off abdominal pain, 5/10, epigastric and periumbilical, crampy, nonradiating
Vomiting of recently ingested food, 2 episodes, non bloody
Still with fever, no signs of bleeding
Consult at ER
1 day PTA
Admission
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Past Medical History
(+) Asthma (1997)Last attack: First quarter of 2011
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Family History
(+) Asthma – paternal
(+) DM – paternal
(+) HTN – maternal
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Birth History
Born full term
NSD
28 year old G2P2
Attended by OB
No complications
Birth weight unrecalled
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Nutritional History
Breastfed until 2 months
Formula Bonna
Weaning 6 months
No food allergies
Prefers chicken, juice
Usual diet: soup, rice, chicken
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Immunization History
BCG
DPT x 3
Polio x 3
Measles x 1
Influenza
No MMR, rotavirus, varicella, Hib, Pneumococcal
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Developmental History
Can write fairly well at 6
Can count to ten at 5
Can add and subtract at 6
Dresses self completely at 6
Backward heel to toe walk at 6
Language
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Personal Social History
Grade 2 student
Likes Math and Sibika
Parents work at a cable companyFather is a technician
Mother is an office employee
Up and down house
Drinking water: purified
Adequate ventilation and lighting
Daily garbage collection
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Review of SystemsNo weight loss; with good appetite
No pruritus or skin lesions
No eye or ear discharge, no epistaxis, no colds
No bleeding gums, no dysphagia
No cough, dyspnea or hemoptysis
No cyanosis or pallor
No change in bowel movements or jaundice, no hematochezia or melena
No change in bladder habits
No limping, swelling of the extremities
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Physical Exam
Conscious, coherent, not in distress
Weight 35.1kg (z=2)
Height 140 cm (z=2)
BMI 17.9 (normal for age)
VitalsBP 120/80, HR 90, RR 24, T 38.2
Skin: warm, flushed, no active lesions, no pallor or cyanosis
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Physical Exam
Head normocephalic, atraumatic
Eyes: pink palpebral conjunctivae, anicteric sclerae, no discharge
Ears: patent ear canal, intact TM, no discharge
Nose: no alar flaring, midline septum, no nasal discharge, no bleeding
Oropharyngeal cavity: no tonsillopharyngeal congestion, no lesions, no bleeding
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Physical Exam
Neck: no CLAD
Chest/Lungs: Equal chest expansion, resonant on all lung fields, no retractions, clear breath sounds
Cardiovascular: Adynamic precordium, apex beat 5th ICS left midclavicular line, normal rate, regular rhythm, no murmurs
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Physical Exam
Abdomen: flat, normoactive bowel sounds, tympanitic, (+) epigastric tenderness, no palpable masses. Liver edge palpable 1 cm below right subcostal margin. No obliteration of Traube space. No CVA tenderness.
DRE and Genitalia: not assessed
Extremities: full and equal pulses, CRT<2s, no edema, no clubbing, no cyanosis
Musculoskeletal: no gross deformities
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Salient Features
8 year old male
Remittent fever of 2 days duration
Generalized body weakness
Fronto-temporal headache, 7/10
On/off abdominal pain, 5/10, epigastric and periumbilical, crampy, nonradiating
Vomiting of recently ingested food, 2 episodes, non bloody
Flushed skin, (+) epigastric tenderness
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Differentials
Systemic Viral Illness
Dengue Fever
Urinary Tract Infection
Typhoid fever
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Work-Up
CBCHgb: 137 [115-145]
Hct 0.39 [33-43]
WBC 11.40 [4-12]Neut 0.60 [54-62]
Lym 0.36 [25-33]
Mono 0.04 [3-7]
Plt 302 [150-400]
Dengue NS-1: Positive
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Assessment
Dengue Fever
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Course in the Wards
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Hospital Day 1
Day 3 of illnessS O A P
- Still with fever and intermittent abd pain
- Good appetite
- No recurrence of vomiting
- conscious, coherent, not in distress
- 100/70, 90, 24, 38.2
- Clear breath sounds
- AP, NRRR, no murmurs
- Soft abdomen, (+) epigastric tenderness
- Pulses full and equal, CRT <2s
- Dengue Fever
- IV hydration- CBCPC
monitoring- Paracetamol- I&O
monitoring- WOF
bleeding, hypotension, narrow pulse pressure
Hgb Hct WBC Plt
128 (N) 0.38 (N)
8.3 (N) 250 (N)
Neut 0.49 (L), Lymp 0.45 (H), Mono 0.05 (N)
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Hospital Day 2
Day 4 of illnessS O A P
- Last febrile episode at 4am
- No abd pain- No bleeding
manifestations
- Good appetite
- No recurrence of vomiting
- conscious, coherent, not in distress
- 100/70, 112, 22, 37.1
- Clear breath sounds
- AP, NRRR, no murmurs
- Soft abdomen, nontender
- Pulses full and equal, CRT <2s
- Dengue Fever
- continue hydration, I&O monitoring and CBCPC monitoring
- Paracetamol PRN
- WOF bleeding, hypotension, narrow pulse pressure
Hgb Hct WBC Plt
131 (N) 0.38 (N) 5.6 (N) 248 (N)
Neut 0.42 (L), Lymp 0.49 (H), Mon 0.06 (N), Eos 0.03 (N)
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Hospital Day 3
Day 5 of illness, Day 1 afebrileS O A P
- No fever, abd pain, vomiting
- No bleeding manifestations
- Good appetite
- conscious, coherent, not in distress
- 90/60, 84, 20, 37
- Clear breath sounds
- AP, NRRR, no murmurs
- Soft abdomen, non tender
- Pulses full and equal, CRT <2s
- Dengue Fever
- Continue present care and management
Hgb Hct WBC Plt
130 (N) 0.39 (N) 5.5 (N) 259 (N)
Neut 0.36 (L), Lymp 0.58 (H), Mono 0.02 (L), Eos 0.04 (H)
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Hospital Day 4
Day 6 of illness, Day 2 afebrileS O A P
- No fever, abd pain, vomiting
- No bleeding manifestations
- Good appetite
- conscious, coherent, not in distress
- 90/60, 88, 20, 36.8
- Clear breath sounds
- AP, NRRR, no murmurs
- Soft abdomen, non tender
- Pulses full and equal, CRT <2s
- Dengue Fever
- IVF to consume
- Increase oral fluid intake
- May go home tomorrow if with no problems
Hgb Hct WBC Plt
134 (N) 0.39 (N) 5.2 (N) 267 (N)
Neut 0.29 (L), Lymp 0.52 (H), Mono 0.04 (N), Eos 0.15 (H)
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Discussion
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Dengue Fever
Dengue is the most rapidly spreading mosquito-borne viral disease in the world
estimated 50 million dengue infections occur annually
approximately 2.5 billion people live in dengue endemic countries
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Classification: WHO
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Classification: PPSFever
Nonspecific symptoms
(+) tourniquet testGrade 1
+Spontaneous
bleeding
Circulatory failure
Profound shock
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Transmission
single-stranded RNA virus comprising four distinct serotypes (DEN-1 to -4)
genus Flavivirus, family Flaviviridae
genotypes of DEN-2 and DEN-3 are frequently associated with severe disease
transmitted to humans through the bites of infected Aedes mosquitoes, principally Ae. Aegypti
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Transmission
Incubation period 4-10 days
virus enters via the skin while an infected mosquito is taking a bloodmeal
acute phase: virus is present in the blood and its clearance from this compartment generally coincides with defervescence
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Endothelial cell dysfunction plasma leakage
Alterations in megakaryocytopoeisis by infection of human hematopoeitic cells and impaired progenitor cell growth platelet dysfunction
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Phases
Febrile Phase
Critical Phase
Recovery Phase
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Febrile PhaseSudden onset of high grade fever
Lasts 2-7 days
Facial flushing, skin erythema, generalized bodyache, myalgia, arthralgia, headache, sore throat, injected pharynx, conjunctival injection, Anorexia, nausea, vomiting
From mild to massive bleedingPetechia and mucosal membrane bleeding --- massive vaginal bleeding and GI bleeding
Enlarged and tender liver
Earliest abnormality: decreased WBC
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Critical Phase
Time of defervescence; Days 3-7
Increase in capillary permeability paralleling with increasing hematocrit
period of clinically significant plasma leakage usually lasts 24–48 hours.
Progressive leukopenia followed by a rapid decrease in platelet count usually precedes plasma leakage.
No increase in capillary permeability: will improve
Otherwise: may become worse as a result of lost plasma volume
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Critical Phase
Plasma leakage: pleural effusion, ascitesdegree of increase above the baseline hematocrit often reflects the severity of plasma leakage
If critical volume is lost ShockBelow normal body temperature
progressive organ impairment, metabolic acidosis and disseminated intravascular coagulation
Severe hemorrhage – increase in WBC
Hepatitis, encephalitis, myocarditis
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Critical Phase
If with improvement after defervescence = non-severe dengue
If defervescence does not occur, take CBC to guide the onset of critical phase and plasma leakage
If with deterioration = dengue with warning signs
will probably recover with early intravenous rehydration
Some will deteriorate to severe dengue
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Recovery PhaseIf patient survives 24-48h critical phase gradual reabsorption of extravascular compartment fluid in the following 48-72 h
Better, good appetite, no GI symptoms, hemodynamic status stable, diuresis ensues
Rash: “isles of white in the sea of red”
Pruritus, bradycardia, ECG changes
HCT stabilizes or may be lower (dilutional)
WBC rises soon after defervescence; Platelets recover later
Excessive IVF: pleural eff, ascites, pulmo edema, CHF
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Severe Dengue
i. plasma leakage that may lead to shock (dengue shock) and/or fluid accumulation, with or without respiratory distress, and/or
ii. severe bleeding, and/or
iii. severe organ impairment
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Severe DengueProgression of vascular permeability worsening hypovolemia shock
Usually around the time of defervescence, usu day 4 or 5 (d 3-7)
Preceded by warning signs
Initially: tachycardia, peripheral vasoconstriction with reduced skin perfusion -- cold extremities and delayed capillary refill time
Narrowed pulse pressure, as peripheral vascular resistance increases
Decompensation – both pressures disappear abruptly
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Diagnosis
Fever of 2-7 days duration
Any 2 of the following: (WHO – 2 or more)
Positive tourniquet testRestlessnessSpontaneous petechiaeFlushingHemoconcentrationThrombocytopeniaAbdominal Pain
HeadacheRetroorbital painMyalgiaAnorexiaEpistaxisCongested oropharynxInjected conjunctivae
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DiagnosisDF/DHF suspected do CBC and actual platelet count
Done daily to determine hemoconcentration and thrombocytopenia
PT and PTT not routinely done
NS1 antigen test useful for rapid early diagnosis (Day 1-4)
Other serological tests not routinely done; but best results obtained starting on Day 5 of illness
Dengue IgM and IgG ELISADengue Dot Blot ELISADengue Immunochromatography (ICT)Dengue Dipstick ELISA
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Admission Criteria
Shock
Spontaneous bleeding
Danger signs: inability to drink or feed, vomits everything, convulsions, lethargy, unconsciousness, no urine output for 6-8 hours
Increased vascular permeability: hematocrit, serous effusion, hypoproteinemia
Abdominal pain
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Fluids: Outpatient
ORS based on weight
>3-10 kg 100 ml/kg/day
>10-20 kg 75
>20-30 kg 50-60
>30-60 kg 40-50
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Fluids: Admitted, without Shock
Isotonic solutions (D5LRS, D5NSS, D5 0.9%NaCl)
Holiday Segar MethodBody Weight
Fluid per day
0-10 100 ml/kg
11-20 1,000 + 50ml/kg for each kg>10
>20 1,500 + 20ml/kg for each kg>20
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Fluids: Admitted, with Shock
Isotonic crystalloid (LRS, NSS, 0.9%NaCl)
Glucose containing solutions should be avoided to prevent osmotic diuresis
Infuse 20ml/kg bolusIf with no improvement, repeat 2-3 times; consider inotropic agent
If stable, gradually decrease IVF rate
Continuous monitoring
Oxygen 2-3L/min
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Blood Transfusion
Fresh whole blood/whole blood if with significant bleeding (hematemesis, hematochezia)
If with DIC, blood component therapy (CP, FFP, Plt)
Preventive transfusion has no role in DHF
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Others
Steroids, Vitamin C, antihistamines, Vitamin K, Albumin No added benefit
Discharge: 72 hours after defervescence in those with DHF
72 hours after termination of shock for those with DSS
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PreventionInsect repellants with N,N-diethyl-1-3 methylbenzamide as active ingredient effective and safe in children >2mos
Insecticides containing propoxur, organophosphates and pyrethrium most effective only indoors for a short period of time
Screening of windows and doors, mosquito nets
Defogging during dengue epidemic, larviciding
Covering and regular emptying and cleaning of water storage
Prospective dengue vaccine still mostly in Phase 1 and 2