neonatal malaria new one.ppt
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Neonatal malariaDr. MUNYENGABE Francois
Pediatric Resident: RMHSupervisor : Dr. Florent RUTAGARAMA
Neonatal malariaDr. MUNYENGABE Francois
Pediatric Resident: RMHSupervisor : Dr. Florent RUTAGARAMA
Preterm baby born at 28 weeks , now is 56 days old baby ,
DOA 56 Problem list – NEONATAL INFECTION RISK RDS, VLBW, PREMATURITY, neonatal
malaria PMH: BABY born to a 29 y . o mother G1P1+1( IUFD WHY?)had PPROM > 18 hours , received 4 doses of steroids IV baby born by C-section APGAR at 1,5, and 10 min 7,8,8
respectivelyTORCHS screening not done,MOTHER denies history of malaria during pregnancy
Clinical case
CASE PRESENTATION
Physical exam on admission Weight: 1.08 kg 25-50 percentile, temp : 36.7, O2 SAT: 89% HR: 161 bpm RR: 77BPM Lengh34 cm : 9th percentile Head circ: 25 cm 2-9th percentile No dysmorphic features
CASE PRES
Baby with respiratory distress , nasal flaring, desaturating on room air
Hypotonic baby with week suck reflexes, absent moro, abnormal grasp reflexes
Acrocyanosis, otherwise : normal findings , started on IV Ampicillin , Cefotaxime,?
aminophylline and putted on CPAP 7 cm , H2O,iv Fluids D10% 80ML/KG/DAY
Then the patient slightly improved but continue to desaturate on room air, feeding intolerance and with poor weight gain, CPAP stopped after 8 days
Since DOL 37, then the baby continue to have, fever , feeding intolerance, respiratory distress, episodes of apnea septic work up done were not conclusive,
( look lab results sheet) It was on 42 days of life ( post delivery) WHEN
BLOOD SMEAR TAKEN BECOME POSITIVE tropho +++( Plasmodium falciparum)
With anemia ,Hb : 6,4 mg/dl then patient receive PRBC transfusions,
Then the baby was putted on IV Artesunate 3mg/kg/dose ,the blood smear was repeated after 4days and was negative, since then patient improved well,
Clinical case
Analysis 28/11/ 30/11/ 01/12/ 01/12/ 03/12 07/12/ 07/12/ 10/12/2015
14/12
16220 full blood count (fbc)
WBC (10^3/uL) [-] 6.99 7.45 7.45 6.45 12.50 7.12 7.78
RBC (10^6/l) [3.2-5.2] 2.29 3.03 3.03 2.78 3.78 2.86 3.42
HGB (g/dl) [12.2-16.4] 6.3 8.5 8.5 8.0 10.6 7.9 9.4
HCT (g/dl) [38-51] 21.1 27.3 27.3 24.0 33.1 26.0 31.8
MCV (FL) [74-94] 92.1 90.1 90.1 86.3 87.6 90.9 93.0
MCH (pg) [28-35] 27.5 28.1 28.1 28.8 28.0 27.6 27.5
MCHC (g/dl) [30-36] 29.9 31.1 31.1 33.3 32.0 30.4 29.6
PLT (10^3/uL) [150-450] 66 40 40 49 80 46 46
LYMPH% (%) [20-40] 55.2 6805 68.5 - 60.9 - 74.6
MONO% (%) [2-14] 17.0 10.2 10.2 - 18.8 - 15.8
EOSINOPHILS % (%) [1-4] 0.1 0.4 0.4 0.6 0.5 0.4 1.2
BASOPHILES % (%) [0-1] 0.4 0.4 0.4 0.2 0.3 0.3 0.3
parasitology BLOOD SMEAR (G.E) () [-] Tropho+++ Negatif Negatif
At the end of this presentation each one will be able: Define neonatal malariaDifferentiate congenital to acquired malaria in neonatesPrevalence of congenital malaria Effects of Malaria on Pregnant Women
Literature review
Effects on Unborn Babies Clinical presentation Diagnosis of neonatal malaria Management of neonatal malaria Prevention
At the end of this presentation each one will be able:
Malaria causes between 200 and 500 million episodes and between 1 and 3 million deaths each year.
Four species of the malarial parasitesP. falciparum,P. vivax,P. ovale and P. malariae.
INTRODUCTION
GLOBAL SCOPE OF MALARIA
3.3 billion people at risk worldwide
98% of Malarial deaths in AfricaSecond leading cause of death from infectious diseases after HIV/AIDS in Africa
• Red: Malaria Everywhere
• Yellow: Malaria in Provence
• Green: No Known Malaria http://cdc-malaria.ncsa.uiuc.edu/
CDC MALARIA MAP
MALARIA DURING PREGNANCY
• Leads to 5-12% of all low birth weights in children worldwide
• Contributes to 35% of all preventable low birth weights in children worldwide• Low birth weights can lead to premature
births and intrauterine growth retardation• 75,000-200,000 infant deaths worldwide each
year attributed to malarial infection during pregnancy
Neonatal malaria is a type of malaria that occurs during the first month of life.
In the last half century, the reports of malaria parasites in neonates generally have been associated with congenital transmission.
Neonatal malaria
congenital, acquired and transfusional.
Three types of neonatal malaria
Malaria parasites cross the placenta either during pregnancy or at the time of delivery.
The presence of asexual forms of malaria parasites in the peripheral blood within the first 7 days of life, or later.
Definition of congenital malaria
Acquired malaria on the other hand results from mosquito bites anytime after delivery, with asexual parasitaemia detected after the minimum incubation period of one week
Acquired neonatal malaria
Neonatal transfusional malaria is said to occur when malaria parasites are detected in a neonate, whose peripheral blood film was previously negative, after a blood transfusion.
The mean interval between blood transfusion and the presence of symptoms is said to be three days.
neonatal transfusional
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507092/
Congenital malaria has been documented for many years but it was previously thought to be uncommon especially in indigenous populations.
Congenital malaria was first described in 1876. More recent studies, however, suggest that incidence
has increased and values between 0.3 to 33% have been observed from both endemic and non-endemic areas.
Prevalence of congenital malaria
Differences in the definitiiion of congenital malaria
Levels of maternal immunity The type of blood sample{ peripheral blood of
neonates or cord blood}
The variability of congenital malaria
-Seminaris in fetal & neonatal medicine (2007),10,207-213
The expertise in blood smear examinations
The method of parasite detection {GIEMSA
staining or polymerase chain reaction( PCR)
A reflection of true environmental differences
The variability in the presence
The mechanism of transplacental passage of the malaria parasite from mother to foetus is still obscure.
It has been postulated that the possible mechanisms include direct penetration through chorionic villi, premature separation of the placenta, and the possible physiologic transfusion of maternal red blood cells to the foetal circulation in utero or at the time of delivery (De Silva et al.,
1982; Menendez & Mayor, 2007; Reynolds et al., 2007).
Mechanism of congenital malaria
Prevention and Control of Malaria during Pregnancy 23
Effects of Malaria on Pregnant Women
All pregnant women in malaria-endemic areas are at risk
Parasites attack and destroy red blood cells Malaria causes up to 15% of anemia in
pregnancy Can cause severe anemia In Africa, anemia due to malaria causes up
to 10,000 maternal deaths per year
Prevention and Control of Malaria during Pregnancy 24
Effects on Unborn Babies
Parasites hide in placenta Interferes with transfer of oxygen and
nutrients to the baby, increasing risk of: Spontaneous abortion Preterm birth Low birthweight—single greatest risk factor for
death during first month of life Stillbirth
Onsets occurring as early as 8 hours and as late as 8 weeks of age have been reported.
Ibhanesebhor reported that presentation of neonatal malaria is not different from that of other neonatal infectious diseases, thus increasing the rate of under or miss diagnosis, neonatal morbidity and mortality
Clinical presentation
most common clinical features in 80% of cases are fever, anemia and splenomegaly.
Children with congenital malaria can present with fever, irritability,
feeding problems, loose stools , poor feeding, restlessness and cyanosis
hepato-splenomegaly, anemia and jaundice.
Clinical presentation
There is evidence proving that congenital malaria is usually mistaken for sepsis or infections in the TORCHS syndrome (Hulbert, 1992).
Therefore for the purpose of performing accurate
diagnosis of congenital malaria, a good index of suspicion, a careful physical examination and repeated peripheral blood smears are therefore needed (Perrault et al., 2009).
Diagnosis
The diagnosis of malaria is established by the microscopic identification of organisms on Giemsa-stained smears of peripheral thick or thin blood smears.
The Giemsa-stained smears diagnostic technique is widely used in most malarious areas for the diagnosis of congenital malaria.
Diagnosis
Studies suggest considering a diagnosis of neonatal malaria in critically ill neonates with fever, unresponsive to antibiotics .
Sometimes, parasitemia cannot be shown on BS , and plasmodial antigen detection or polymerase chain reaction of the blood may be necessary (Perrault et al., 2009).
Diagnosis con’t
A well documented risk factor for developing neonatal and congenital malaria is maternal
3rd trimester malaria infection,
There are very few studies reporting the use of drugs such as quinine, artesunate and mefloquine in neonates and the studies with use of oral artesunate is even scanty (Patel & Belsare, 2002; Ming, 2008).
These drugs have been used effectively in older children and could be hence adapted for neonates to treat congenital malaria.
Management
Infant less than 5 kg body weight: uncomplicated malaria
Treat infant weighninh < 5 kg with uncomplicated P. falciparum malaria an ACT at the same mg/kg wb target dose as for children weigning 5 kg
Strong recommendation, very low quality evidence
Management of neonatal malaria
WHO malaria guidelines 2015
Children weighing < 20 kg should receive a high dose of artesunate ( 3mg/kg bw /per dose ) than larger children and adults ( 2.4 mg/kg bw per dose ) to ensure equivalent exposure to the drug
Strong recommendation based on pharmacokinetic modelling
If artesunate is not available , use artemether in preference to quinine for treating children and adults with severe malaria
Revised dose recommendation for parenteral ARTESUNATE in young
children
WHO malaria guidelines 3 rd edition 2015
In China, a study comparing the efficacy of artesunate versus quinine in the treatment of congenital malaria observed that the total effective rates of the artesunate treatment group and the quinine group were 92.31% and 83.33% and the clearance rates of plasmodium were 92.31% and 78.57%, respectively (Patel & Belsare, 2002).
Management of neonatal malaria
The study therefore demonstrated that efficacy of artesunate over quinine and noted that it can be used as drug of first choice for treatment of congenital malaria.
More studies are however required to further elucidate the potency of artesunate in the treatment of congenital malaria.
Management Con’t
Tanzania Journal of Health Research Volume 13, Number 3, July 2011
MALARIA PREVENTION HISTORY
• 1950s first preventative malaria strategies with chemoprophylaxis with chloroquine
• 1980s became a public health issue• Chloroquine resistance and poor adherence
(weekly/bi-monthly administration required) led to poor effectiveness
• 2004 Intermittent preventative treatment (IPT) replaced chemoprophylaxis
WHO recommends that pregnant women living in stable ( high)malaria endemic areas should be :
Protected against the infection by using ITNs Receiving intermitent preventive
treatment( IPT) with SULPHADOXINE-PYRIMETHAMIN ( IPTp)
Prevention of congenital malaria
Congenital malaria is the least known manifestation of malaria and a very neglected area of research..
Onsets occurring as early as 8 hours and as late as 8 weeks of age have been reported.
Public health policy on malaria control should also take into cognizance the importance of integrating guidelines on congenital malaria management and control.
And ARTESUNATE is the treatment of choice 3mg/kg/dose more useful than2.4mg/kg/dose
Home message
http://www.sfnmjournal.com/article/S1744-165X(07)00019-4/abstract
WHO malaria guidelines 3rd edition 2015 http://www.sfnmjournal.com/article/S1744-165X(07)00
019-4/abstract
Tanzania Journal of Health Research Volume 13, Number 3, July 2011
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507092/
-Seminaris in fetal & neonatal medicine (2007),10,207-213
Uptodate.com Nelson textbook of pediatrics 20 edition
REFERENCES
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