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23/01/2019

Et pourquoi pas un ballonet pré-pelvien ?

Minimally invasive preperitoneal balloon tamponade and abdominal aortic junctional tourniquet versus open packing for pelvic fracture-associated hemorrhage: Not all extrinsic compression is equal.

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On propose souvent la réalisation d'une hémostase temporaire par a pose de sondes à ballonet. Ce travail (partiellement déjà présenté en 2016) rapporte une expérience de ce type avec un produit initialement dédié à la chirurgie pariétale herniaire. La simplicité de sa pose et son efficacité semblent prometteurs du moins chez le cochon.

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BACKGROUND:

Minimally invasive preperitoneal balloon tamponade (PPB) and abdominal aortic junctional tourniquets (AAJT) have been proposed as alternatives to open preperitoneal packing (OP) for the management of pelvic fracture-associated hemorrhage. We hypothesized that the PPB (SpaceMaker Pro) and AAJT would result in similar rates of survival and blood loss versus OP METHODS: 32 swine underwent creation of a combined open-book pelvic fracture and major iliac vascular injuries. Animals were randomized to no intervention (n=7), OP (n=10), PPB (n=9), or AAJT (n=6) at a mean arterial pressure <40 mmHg following initiation of uncontrolled hemorrhage. Survival (up to 60 min + 10 min after intervention reversal), hemodynamics, extraperitoneal pressures, blood loss, and associated complications were compared between groups.

spacemaker-plus-dissector-system.jpeg?1547996744

RESULTS:

Prior to injury, no difference was measured between groups for weight, hemodynamics, lactate, and hematocrit (all p>0.05). The injury was uniformly lethal without intervention, with survival time (mean) of 5 min, peak preperitoneal pressure (PP) of 14 mmHg, blood loss of 960 g, and peak lactate of 2.6 mmol/L. Survival time was 44 min with OP vs. 60 min with PPB and AAJT (p<0.01). Peak PP (mmHg) was 19 with OP, 23 with PPB, and 23 with AAJT (p>0.05). Blood loss (g) was 850 with OP, 930 with PPB, and 600 with AAJT (p>0.05). Peak lactate (mmol/L) was 3.3 with OP, 4.3 with PPB, and 6.3 with AAJT (p<0.01). Only 33% of AAJT animals survived intervention reversal vs. 60% for OP and 67% for PPB (p<0.01). Necropsy revealed bowel/bladder injury in 50% of AAJT subjects vs. 0% in all other arms (p<0.01).

CONCLUSIONS:

PPB is a safe and potentially effective alternative to OP for the management of lethal pelvic fracture-associated hemorrhage. AAJT offers a similar survival benefit to PPB but has concerning rates of ischemia-reperfusion and compressive abdominal organ injury.

 

| Tags : pelvis

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