A 28-year-old Sudanese man, with no relevant past medical history, presented to a university hospital, Sudan with a 3-day history of abdominal pain and inability to pass stool and flatus. The pain was colicky in nature and has a severity of 6/10 on a visual analogue scale. On inquiry, the patient documented intermittent fever for 4 days for which he had taken paracetamol tablets (500 mg tab/8 hourly). The fever had irregular spikes without a noticeable rhythm. Besides, he has reported mild myalgia and back pain and sometimes vomiting. The patient has no history of major surgery and not admitted in the previous months to any hospital.\nOn examination, pulse 76 bpm, blood pressure 130/80 mmHg and temp 36.8°C. His abdomen was moderately distended with mild diffuse tenderness with exaggerated bowel sounds. Neither guarding nor rebound tenderness has been documented with tympanic percussion note. Digital rectal examination revealed empty rectum. The rest of the physical examination was unremarkable.\nBlood film for malaria was positive for Plasmodium falciparum (). Complete blood counts revealed a hemoglobin of 13.7 g/dL (11–17 g/dL), white blood cells count of 8400 cells/uL (4.0–11.0 cells/uL) and platelet count of 240 000 cells/uL (150–450 cells/uL). Random blood glucose was normal. Renal function tests were normal with a blood Urea of 42 mg/dL (15–45 mg/dL) and serum creatinine of 1.1 mg/dL (0.6–1.3 mg/dL). Important serum electrolytes were within normal range: sodium (Na+) was 138 mEql/L (135–145 mEql/L), potassium (K+) was 4.2 mEql/L (3.5–5.5 mEql/L), calcium was 10 mg/dl (8.6–10.3 mg/dl) and chloride (Cl−) was 103 mEql/L (96–109 mEql/L). Vidal test for typhoid fever and rapid antibody test was normal. ICT for Hepatitis B, Hepatitis C and HIV was negative. Abdominal X-ray showed distended bowel with gas with no significant air–fluid levels. Abdominal ultrasound revealed loops of distended bowel with mild free intra-abdominal fluid in all four quadrants.\nThe patients were diagnosed with functional bowel obstruction secondary to malaria. The patient was admitted and received nothing per mouth and nasogastric tube for suction of air. He received intravenous Artesunate according to the world health organization (WHO) prescription (2.4 mg/kg at 0, 12 hours, 24 hours then qday). The I.V. artesunate was continued for a total of 3 days from the first dose. The patient administered I.V. fluids in terms of 0.9% normal saline at a rate of 1 litre/8 hourly for 48 hours. He passed flatus about 36 hours after starting the intravenous artesunate and he passed faeces around 48 hours with the resolution of the abdominal pain and distension. A stool examination was performed with no organisms identified. On the fourth day of hospitalization, auscultation showed normal bowel sounds and the patient discharged in good condition on oral artesunate tablets. A blood film has been taken to ensure the clearance of parasites (). The follow-up 1 week later was unremarkable.
A 46-year-old man, previously well, presented at Kapit Hospital, Sarawak, Malaysian Borneo with fever, chills and rigors for 2 days. It was associated with severe epigastric and left hypochondrium pain and loose stool. There was no preceding history of trauma. Upon arrival to the emergency unit, his general condition was stable. Physical examination revealed blood pressure of 123/86 mmHg, pulse rate of 114 beats/min and temperature of 39 °C. His respiratory rate was 23 breath/min and the oxygen saturation on room air measured by pulse oximetry was 97%. The abdomen was generally tender and guarded, maximal at the epigastric region. Bedside focused abdominal ultrasonography revealed free fluid in the abdomen. Chest radiograph did not reveal any obvious sign of pneumoperitoneum.\nHaematological analysis showed haemoglobin of 11.5 g/dL, white blood cell count of 8.2 × 103/μL and platelet count of 77 × 103/μL. His creatinine level was 89 μmol/L and electrolytes were within the normal range. The results of the liver function tests were as follows: aspartate aminotransferase 15 U/L, alanine aminotransferase 11.8 U/L and total bilirubin 22.9 μmol/L. Serum amylase was normal. The arterial blood gas revealed good oxygenation and absence of metabolic disturbance (pH 7.44, PaO2 87 mmHg, PaCO2 34 mmHg, bicarbonate of 22.3 mmol/L and base excess − 1.8 mmol/L). The serum lactate measured was 0.8 mmol/L.\nPlasmodium knowlesi was identified by examination of a Giemsa-stained blood film and the parasitaemia was estimated to be 240 parasites/μL blood. Finger prick blood samples from the patient were spotted on filter paper and sent to the Malaria Research Centre at Universiti Malaysia Sarawak where DNA was extracted as described previously []. The DNA was examined by nested PCR assays specific for P. knowlesi, P. falciparum, P. vivax, P. malariae and P. ovale, which indicated the patient was infected with P. knowlesi [].\nThere was no formal radiological imaging done, such as abdominal ultrasonography or computed tomography, since this service is unavailable at Kapit hospital. Four tablets of artemether–lumefantrine were given upon laboratory diagnosis of P. knowlesi malaria.\nThe patient later developed hypotension despite fluid resuscitation and required single inotropic support, noradrenaline at a dose of 0.2 mcg/kg/min. He simultaneously experienced worsening peritonism. The surgical team was consulted, and he was posted for emergency exploratory laparotomy after stabilization. The anti-malarial was changed to intravenous artesunate in view that the patient was vomiting.\nIntraoperatively, haemoperitoneum was observed upon entering the abdomen, with blood clots seen overlying the splenic region. Gross examination of the spleen revealed tear of splenic capsule and subcapsular haematoma at the superior pole (Fig. ). Otherwise, the spleen was of average size, measuring 12 cm. Total splenectomy was performed and no visceral perforation was seen. The estimated blood loss was 7 L. During the operation, he required high dose of inotrope infusion: noradrenaline up to 2 mcg/kg/min, adrenaline up to 1 mcg/kg/min and dobutamine constant at 5 mcg/kg/min, fluid resuscitation (2 L of crystalloid and 1.5 L of colloid solution) and disseminated intravascular coagulation (DIC) regime transfusion due to massive blood loss. Postoperatively, the patient was managed in the high dependency ward of Kapit Hospital. There, he remained stable, inotrope was weaned off and he was extubated on the next day after the operation. He was administered with intravenous artesunate for 4 days. It was later switched to oral artemether–lumefantrine which he completed following a total of 6 doses. Subsequent blood films were negative for malaria parasites.\nHistopathological examination revealed splenic tissue with focal breaching of the capsule with areas of haemorrhage, consistent with splenic haemorrhage. There were a few brownish pigments within the spleen indicative of malarial pigment. The patient recovered well after the operation and was discharged after 9 days of hospital stay. He was given routine follow up post-malaria treatment and later administered with the routine post-splenectomy vaccinations against Streptococcus pneumoniae, Neisseria meningitidis and Haemophilus influenzae. One month later, he was well upon review at the surgical outpatient clinic.