بررسی ارتباط هموگلوبین قبل از رقیق سازی حاد خون با حجم ثابت، با کمترین هموگلوبین حین پمپ قلبی-ریوی در اعمال جرّاحی عروق کرونر

نوع مقاله : Original Article(s)

نویسندگان

1 استادیار، گروه بیهوشی و مراقبت های ویزه، دانشکده ی پزشکی،دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

2 کارورز، مرکز تحقیقات آموزش پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

چکیده

مقدمه: در منابع فعلی حداقل هموگلوبین پایه‌ی لازم جهت انجام Acute Normovolemic hemodilution (ANH) در بیمارانی که تحت پمپ قلبی- ریوی قرار نمی‌گیرند، mg/dl 12 ذکر شده است که در جراحی‌هایی که بیمار تحت پمپ قرار می‌گیرد، مناسب نیست و موجب افت هموگلوبین و ایجاد عوارض می‌گردد. در این مطالعه ارتباط هموگلوبین قبل از رقیق سازی حاد خون با حجم ثابت، با کمترین هموگلوبین حین پمپ قلبی- ریوی در اعمال جراحی انتخابی عروق کرونر بررسی شد.روش‌ها: در یک مطالعه‌ی مقطعی، 581 نفر از بیماران کاندیدای عمل جراحی انتخابی عروق کرونر که از اردیبهشت ماه ١٣٨٧ تا آذر ماه 1388 در بیمارستان شهید چمران اصفهان تحت عمل جراحی قرار گرفتند، بررسی شدند. هموگلوبین به صورت متوالی حین عمل اندازه گیری شد. حداقل هموگلوبین پیش بینی شده و حداکثر خونی که می‌توان از بیمار فصد کرد، توسط فرمول محاسبه گردید.یافته‌ها: میانگین هموگلوبین پایه، اولین هموگلوبین تحت پمپ، حداقل هموگلوبین تحت پمپ و متوسط هموگلوبین تحت پمپ در بیمارانی که ANH شدند، به ترتیب mg/dl 1/15، 3/8، 8/7 و 2/8 و در بیمارانی که ANH نشدند، به ترتیب mg/dl 1/13، 7/7، 2/7، و 6/7 بود. حداقل هموگلوبین پایه‌ی مناسب جهت انجام ANH و سپس قرار گرفتن تحت پمپ mg/dl 5/14 (حساسیت 77 درصد، ویژگی 70 درصد و سطح زیر نمودار 805/0) و حداقل هموگلوبین پایه‌ی مناسب جهت قرار گرفتن تحت پمپ بدون انجام ANH، mg/dl 9/12 (حساسیت 71 درصد، ویژگی 64 درصد و سطح زیر نمودار 686/0) محاسبه شد.نتیجه‌گیری: حداقل هموگلوبین پایه‌ی مناسب جهت انجام ANH و قرار گرفتن تحت پمپ تا حدودی بستگی به آستانه‌ی تجویز خون آلوژن و پذیرش فواید و خطرات ANH توسط پزشک و بیمار دارد. در این مطالعه مقادیر هموگلوبین پایه‌ی مناسب متفاوتی جهت استفاده در کلینیک پیشنهاد شد.

کلیدواژه‌ها


عنوان مقاله [English]

The Relationship between Hemoglobin Level before Acute Normovolemic Hemodilution and Nadir Level of Hemoglobin during Cardiopulmonary By-pass in Elective Coronary Artery Bypass Graft Surgery

نویسندگان [English]

  • Mojtaba Mansouri 1
  • Sasan Habib Ekhiari 2
1 Assistant Professor, Department of Anesthesiology, School of Medicine, Isfahan University
2 Student of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
چکیده [English]

Background: Current data suggests that basal hemoglobin of 12 mg/dl is suitable for practicing Acute Normovolemic Hemodilution (ANH), during operations not necessitating cardiopulmonary bypass. This level seems to be too low when using CPB, complicating this procedure.Methods: To study the relationship between Hb level before ANH and baseline level of hemoglobin, 581 patients were investigated during cardiopulmonary bypass in elective coronary artery bypass graft (CABG) surgery. Convenient sampling method was used. Repeated measurements of hemoglobin level were done during the operation.Finding: The mean of baseline hemoglobin, first hemoglobin after going on-pomp, nadir hemoglobin during pomp, and hemoglobin during pomp for patients underwent ANH was 15.18, 8.38, 7.8 and 8.2 mg/dl respectively and 13.1, 7.7, 7.2, and 7.6 mg/dl for patients who did not undergo ANH. There was significant correlation between basal and first Hb hemoglobin going on-pomp, nadir hemoglobin during pomp and mean hemoglobin during pomp in both ANH and no-ANH groups (P < 0.001). There was significant difference between results of current formula to predetermine nadir hemoglobin, and our actual nadir hemoglobin obtained from patients. Minimum level of suitable basal hemoglobin for practicing ANH (450 ml) during on-pomp CABG, was calculated to be 14.55 mg/dl (sensitivity: 77%, specificity: 70%, and AUC: 0.805) and 12.95 mg/dl (sensitivity: 71%, specificity: 64%, and AUC: 0.686) for on-pomp CABG without ANH.Conclusion: Basal hemoglobin for practicing ANH during on-pomp surgery, somehow, depends on threshold hemoglobin for blood transfusion and acceptance of advantages and disadvantages of ANH and its complications by physician and patient.

کلیدواژه‌ها [English]

  • Acute normovolemic hemodilusion
  • Cardiopulmonary bypass
  • Hemoglobin
  • Coronary Artery Bypass Graft
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