Safety and efficacy of a simple cardiotomy suction system as a blood salvage procedure during off-pump coronary artery bypass surgery

Yasukawa, Takashi; Manabe, Susumu; Hiraoka, Daisuke; Hirayama, Daiki; Kinoshita, Ryoji; Komori, Masami; Hosokawa, Masahiro; Hirooka, Kazuyuki

doi:10.1007/s10047-019-01103-9

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…Patient blood management (PBM) [12] recommends maintaining the blood volume by rescuing the patient`s own red blood cells (RBCs) from the surgical field [16]. In cardiac surgery this is done by direct suctioning of shed blood into the venous reservoir of the extracorporeal circulation (ECC) via filter systems, or by collecting and processing of wound blood with cell salvage devices [17][18][19][20][21][22][23]. Both procedures are safe, cost-effective [14,24], useful [25][26][27][28][29][30][31], and have become routine in most cardiac centers [32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Turbulence in surgical suction heads as detected by MRI

Hanekop¹,

Kollmeier²,

Frahm³

et al. 2023

J Extra Corpor Technol

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Background: Blood loss is common during surgical procedures, especially in open cardiac surgery. Allogenic blood transfusion is associated with increased morbidity and mortality. Blood conservation programs in cardiac surgery recommend re-transfusion of shed blood directly or after processing, as this decreases transfusion rates of allogenic blood. But aspiration of blood from the wound area is often associated with increased hemolysis, due to flow induced forces, mainly through development of turbulence. Methods: We evaluated magnetic resonance imaging (MRI) as a qualitative tool for detection of turbulence. MRI is sensitive to flow; this study uses velocity-compensated T1-weighted 3D MRI for turbulence detection in four geometrically different cardiotomy suction heads under comparable flow conditions (0-1250 mL/min). Results: Our standard control suction head Model A showed pronounced signs of turbulence at all flow rates measured, while turbulence was only detectable in our modified Models 1-3 at higher flow rates (Models 1 and 3) or not at all (Model 2). Conclusion: The comparison of flow performance of surgical suction heads with different geometries via acceleration-sensitized 3D MRI revealed significant differences in turbulence development between our standard control Model A and the modified alternatives (Models 1‑3). As flow conditions during measurement have been comparable, the specific geometry of the respective suction heads must have been the main factor responsible. The underlying mechanisms and causative factors can only be speculated about, but as other investigations have shown, hemolytic activity is positively associated with degree of turbulence. The turbulence data measured in this study correlate with data from other investigations about hemolysis induced by surgical suction heads. The experimental MRI technique used showed added value for further elucidating the underlying physical phenomena causing blood damage due to non-physiological flow.

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