3 Malaria Clinical Features
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CLINICAL FEATURES OF MALARIA
febrile illness characterized by fever and related symptoms
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Clinical Manifestations are related to cycle of events in relation to RBC
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The first symptoms of malaria after the pre-patent period are called the primary attack.
Usually atypical (starts getting relapse of symptoms at regular intervals of 48-72 hours)
short term relapses (recrudescences). long term relapses (after a gap of 20-60
days or more)due to the reactivation of the hypnozoites in
the liver in case of vivax and ovale malaria. In falciparum and malariae infections,
recrudescences can occur due to persistent infection in the blood.
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Broad clinical manifestations of MalariaFever Sweating Anemia Splenomagaly (enlarged
spleen) Irratability Coma, Retinal Hemorrages Algid Malaria ( a shocklike
syndrome) Respiratory distress
syndrome
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MANIFESTATIONS OF ACUTE MALARIA
Fever and shivering. The attack begins with fever, with the temperature rising as high as 40ºC and falling again over a period of several hours.
A poor general condition, feeling unwell and having headaches like influenza.
Diarrhea, nausea and vomiting often occur as well.
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MALARIAL PAROXYSM
cold stage hot stage sweating
stage
feeling of intense coldvigorous shiveringlasts 15-60 minutes
intense heatdry burning skinthrobbing headachelasts 2-6 hours
profuse sweatingdeclining temperatureexhausted and weak → sleeplasts 2-4 hours
*typical features are seen after the infection gets established for about a week
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PATTERN OF FEVERThe fever
paroxysm corresponds to the period of infected erythrocyte rupture and merozoite invasion.
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ATYPICAL FEATURESAtypical feverHeadacheBody ache, back
ache and joint painsDizziness, vertigoAltered behaviour,
acute psychosisAltered sensoriumConvulsions, comaCough
BreathlessnessChest painAcute abdomenWeaknessVomiting and
diarrhoeaJaundicePallorPuffiness of lids
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SEVERE MALARIACEREBRAL MALARIASEVERE ANAEMIAACUTE RENAL FAILUREPULMONARY OEDEMA OR ARDSCIRCULATORY COLLAPSE OR SHOCKSPONTANEOUS BLEEDINGGENERALIZED CONVULSIONSMETABOLIC ACIDOSISHYPOGLCEMIABLACK WATER FEVER
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Cerebral Malaria
• Coma• diffuse symmetric encephalopathy• Unusual focal neurological signs• Primitive reflexes absent• Retinal haemorrhage with puillary dilatations• Hemiplegia, CP• Blindness, deafness• Impaired cognition and learning
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Anemia
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Acute renal failure
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Metabolic acidosis
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Hypotension
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Pulmonary edema
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Hypoglycemia MULTIFACTORIALParasite utilises the glucose Associated with hyperlactatemiaDue to hepatic failure gluconeogenesis
and glcogenolyis are affected Quinine – pancreatic beta cell stimulation
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Black water fever• due to intravascular hemolysis at
schizogony period• Predisposing factors
• quinine• cold exposure• fatigue• trauma• pregnancy• parturition
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Effects MethaemoglobuminaemiaHyperbilirubinaemiaHaemoglobinuria
PigmentsOxyhaemoglobinMethaemoglobinBilirubinMethaemalbumin
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Symptomsrapid pulsehigh fever and chillsextreme prostrationa rapidly developing anemiathe passage of urine that is black or dark red in colourFever, rigor, aching pain in loin, icterus, vomitting, circulatory collapse,
acute renal failure
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MALARIA IN PREGNANCYFoetal
IUGR LBWStill birthPrematurity
increased risk of neonatal death
Fetal distressMaternal
Anaemia risk of maternal mortality
Mortality due to cerebral malaria is higher
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MALARIA IN CHILDRENConvulsionsComaHypoglycemiaMetabolic acidosisSevere anemiaDeep jaundiceAcute renal failureAcute pulmonary
edema
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