Department of Anaesthesia

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Browsing Department of Anaesthesia by Author "Ogunleye, E. O"

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    Open Access
    Aortic aneurysm: A life-threatening condition in a low-resource nation
    (Woltlers Kluwer, 2019-01) Ogunleye, E. O; Adekola, O. O; Dada, O. I. O
    Background: Aortic aneurysm is said to be uncommon in the black population; however, with the modification in lifestyle of the dark‑skinned people, and improved diagnostic facilities in Sub‑Saharan African nations, a surge in its presentation is more likely. If undiagnosed, aortic aneurysm can be catastrophic. We determined the epidemiology pattern and outcome of aortic aneurysm at our institution. Materials and Methods: This is a retrospective analysis of patients who presented with aortic aneurysm from 2000 to 2017. A pro forma was designed to analyze the bio data, characteristics of the aneurysms, clinical manifestation, treatment, and outcome. The Crawford, Stanford, and DeBakey criteria were used to classify the aortic aneurysm. The surgical management of the aneurysm was resection and its replacement with synthetic polytetrafluoroethylene prosthesis with antibiotic prophylaxis under general anesthesia. Results: A total of 17 patients were recruited, with a mean age of 62.75 ± 20.92 years. A high proportion were above 65 years, i.e., 7 (41.2%), and male gender, i.e., 10 (58.8%). The most common location of aortic aneurysm using Crawford criteria was Type IV followed by Type I, with Stanford criteria being Stanford Type B (13) and with DeBakey being Type III (3). Five operated were fusiform in shape. A higher proportion of patients, i.e., 14 (82.4%), had coexisting hypertension, and a positive history of smoking, i.e., 7 (41.2%). The 30‑day mortality was 64.7%, the operative mortality was 35.3%, and three patients (17.6%) were loss to follow‑up. A positive history of smoking increased the risk of dead, relative risk 3.375, 95% confidence interval 0.677–5.909, P = 0.04. Conclusion: Aortic aneurysm, though uncommon, is not a rare disease among cardiovascular disorders in a low‑resource environment. The most common shape and location were fusiform and Stanford Type B or DeBakey Type III, respectively. There was associated high 30‑day mortality (64.7%)
  • Item
    Open Access
    Evaluation of the accuracy of the Masimo Pronto compared to laboratory spectrophotometric method of intraoperative haemoglobin measurement
    (African Journals Online, 2019) Oguntuase, O. O; Adekola, O. O; Dada, O. I. O; Olatosi, J. O; Ogunleye, E. O
    Background: Transfusion decisions intra-operatively are generally guided by accurate blood loss estimation and intermittent invasive haemoglobin measurement. We investigated the accuracy of non- invasive intraoperative haemoglobin measurement using the Masimo Pronto (SpHb) as compared to laboratory spectrophotometry (tHb). Methods and Materials This was a cross sectional study of 110 adult patients undergoing surgery with a potential for blood loss of 500 ml and over under general anaesthesia. Haemoglobin level was determined simultaneously post-induction, pre-transfusion and postoperatively using (SpHb) readings from Masimo Pronto® Pulse CO-Oximeter (Rainbow® SET® Technology Masimo Corporation, Irvine, CA) and haemoglobin analyzer with laboratory spectrophotometry (tHb). Results A total of 244 sample pairs were analysed; 110 post-induction, 24 pre-transfusion and 110 post-operatively. There was a significant difference in mean haemoglobin between SpHb and tHb during the study at all time periods, p<0.0001. The overall mean haemoglobin was SpHb 12.02 ±1.86 g/dl, and tHb10.49 ±1.92 g/dl, p<0.0001, bias (1.5 ±1.76 g/dl), and limits of agreement-1.9 to 5.0 g/dl. There was moderate Pearson correlation (0.57) between SpHb and tHb measurements. The mean pre-transfusion haemoglobin was SpHb 10.25 ±1.96 g/dl, and tHb 8.26 ±1.27 g/dl, p<0.0001, bias, 2.0 ±1.89 g/dl and limits of agreement, -1.7 to 5.7 g/dl. Conclusion It is concluded that SpHb overestimated haemoglobin measurement as compared with tHb. Hence the Masimo Pronto was found to be inaccurate as compared with laboratory spectrophotometry in intraoperative haemoglobin measurement. The bias was too large and limits of agreement too wide between SpHb and tHb to make appropriate transfusion decisions.