Adult sickle cell disease a five-year experience of intensive care management in a university hospital in Oman

Sickle cell disease [SCD] is an inherited disease caused by an abnormal type of haemoglobin. It is one of the most common genetic blood disorders in the Gulf area, including Oman. It may be associated with complications requiring intensive care unit [ICU] admission. This study investigated the causes of ICU admission for SCD patients. This was a retrospective analysis of all adult patients >/= 12 years old with SCD admitted to Sultan Qaboos University Hospital [SQUH] ICU between 1st January 2005 and 31st December 2009. A total number of 49 sickle cell patients were admitted 56 times to ICU. The reasons for admission were acute chest syndrome [69.6%], painful crises [16.1%], multi-organ failure [7.1%] and others [7.2%]. The mortality for SCD patients in our ICU was 16.1%. The haemoglobin [Hb] and Hb S levels at time of ICU admission were studied as predictors of mortality and neither showed statistical significance by Student's t-test. The odds ratio, with 95% confidence intervals, was used to study other six organ supportive measures as predictors of mortality. The need for inotropic support and mechanical ventilation was a good predictor of mortality. While the need for non-invasive ventilation, haemofiltration, blood transfusions and exchange transfusions were not significant predictors of mortality. Acute chest syndrome is the main cause of ICU admission in SCD patient. Unlike other supportive measures, the use of inotropic support and/or mechanical ventilation is an indicator of high mortality rate SCD patient

Diagnostic and therapeutic challenges in a critically ill patient in ICU with superior vena cava syndrome-case report

To highlight the diagnostic and therapeutic challenges associated with the treatment of a patient with superior vena cava syndrome and a coexisting coagulopathy. This case report describes a bone marrow transplant patient with graft versus host diseases [GVHD] who was admitted to our intensive care unit with bronchiectasis complicated with nosocomial pneumonia. When he was recovering from pneumonia after prolonged ventilatory support, he developed superior vena cava [SVC] syndrome due to mediastinal lymphadenopathy. The diagnosis was delayed due to associated confounding clinical factors. Because of the rapid deterioration in patient's condition, immediate tissue diagnosis of mediastinal lymph nodes and re-canalization of vena cava by stenting were our priority. He had many other medical problems such as thrombocytopenia, deranged coagulation profile, old cerebral infarction with hemiplegia, seizure disorder and cardiac arrhythmias which complicated the treatment plan. USG guided biopsy followed by stenting of the SVC was done after discussing the risks and benefits with patient's relatives. But, he had bleeding from biopsy site due to deranged coagulation profile. Again for the same reason, he was not given any anticoagulants. Within 24 hours the stent was blocked by clot which was diagnosed by the deteriorating clinical features and repeat CT scan. Then he was given enoxaparin in therapeutic dose and the clot cleared within a day possibly partly due to enoxaparin and partly coagulopathy. In a bone marrow transplant patient with GVHD, the associated complications can confound the diagnosis of SVC syndrome. Physician has to show high degree of suspicion as it may develop even if patient has coagulopathy due to other factors such mediastinal lymphadenopathy. SVC stent may clot even if the patient has coagulopathy. So, it is advisable to defer the invasive diagnostic procedures such as mediastinal lymph node biopsy till the patient is well stabilized after the stent placement in SVC as it will prevent further use of anticoagulants. Enoxaparin may be helpful in the treatment of stent thrombosis in such patients with multiple complications

Liquid Ventilation

Mammals have lungs to breathe air and they have no gills to breath liquids. When the surface tension at the air-liquid interface of the lung increases, as in acute lung injury, scientists started to think about filling the lung with fluid instead of air to reduce the surface tension and facilitate ventilation. Liquid ventilation [LV] is a technique of mechanical ventilation in which the lungs are insufflated with an oxygenated perfluorochemical liquid rather than an oxygen-containing gas mixture. The use of perfluorochemicals, rather than nitrogen, as the inert carrier of oxygen and carbon dioxide offers a number of theoretical advantages for the treatment of acute lung injury. In addition, there are non-respiratory applications with expanding potential including pulmonary drug delivery and radiographic imaging. The potential for multiple clinical applications for liquid-assisted ventilation will be clarified and optimized in future

Complications of central venous catheterisation breakage of guidewire- a disaster averted

Central venous catheterisation [CVC] is a common bedside invasive procedure done in medical practice. Even though it is a safe procedure when done with ultrasound guidance, difficulties and complications do occur even in experienced hands. Here, we describe the difficulties encountered in the form of the breakage of the guidewire while inserting a CVC in a patient with sickle cell disease