Effectiveness of kaolin-impregnated hemostatic gauze use in preperitoneal pelvic packing for patients with pelvic fractures and hemodynamic instability: A propensity score matching analysis

Platelet-Rich Plasma-Embedded Porous Polycaprolactone Film with a Large Surface Area for Effective Hemostasis

BACKGROUND

Uncontrollable and widespread bleeding caused by surgery or sudden accidents can lead to death if not treated with appropriate hemostasis. To prevent excessive life-threatening bleeding, various hemostatic agents based on polymeric biomaterials with various additives for accelerated blood coagulation have been adopted in clinical fields. In particular, platelet-rich plasma (PRP), which contains many blood coagulation factors that can accelerate blood clot formation, is considered as one of the most effective hemostatic additives.

METHODS

We investigated a PRP-embedded porous film using discarded (expired) PRP and a film with a leaf-stacked structure (FLSS), as a hemostatic agent to induce rapid hemostasis. The film, which contained an LSS on one side (PCL-FLSS), was fabricated by a simple heating-cooling technique using tetraglycol and polycaprolactone (PCL) film. Activated PRP was obtained by the thawing of frozen PRP at the end of its expiration date (the platelet cell membrane is disrupted during the freezing and thawing of PRP, thus releasing various coagulation factors) and embedded in the PCL-FLSS (PRP-FLSS).

RESULTS

From in vitro and in vivo experiments using a rat hepatic bleeding model, it was recognized that PRP-FLSS is not only biocompatible but also significantly accelerates blood clotting and thus prevents rapid bleeding, probably due to a synergistic effect of the sufficient supply of various blood coagulants from activated PRP embedded in the LSS layer and the large surface area of the LSS itself.

CONCLUSION

The study suggests that PRP-FLSS, a combination of a porous polymer matrix with a unique morphology and discarded biofunctional resources, can be an advanced hemostatic agent as well as an upcycling platform to avoid the waste of biofunctional resources.

The use of a kaolin-based hemostatic dressing to attenuate bleeding in dogs: A series of 4 cases

OBJECTIVE

To describe the use of a synthetic hemostatic dressing, QuikClot Combat Gauze (QCG), in dogs with bleeding wounds.

CASE SERIES SUMMARY

Two dogs presented with bleeding traumatic wounds, and QCG was used to achieve hemostasis during stabilization of these dogs. In the other 2 dogs, QCG was used to help attenuate bleeding associated with a surgical procedure.

NEW OR UNIQUE INFORMATION PROVIDED

While hemostatic dressings have been widely studied and used in human medicine, there is minimal information on the use and efficacy of these hemostatic dressings in veterinary medicine. This case series describes the use of QCG in dogs with hemorrhaging wounds. QCG could be a valuable resource in veterinary emergency and critical care settings.

American Association for the Surgery of Trauma/American College of Surgeons Committee on Trauma: Clinical protocol for damage-control resuscitation for the adult trauma patient

ABSTRACT

Damage-control resuscitation in the care of critically injured trauma patients aims to limit blood loss and prevent and treat coagulopathy by combining early definitive hemorrhage control, hypotensive resuscitation, and early and balanced use of blood products (hemostatic resuscitation) and the use of other hemostatic agents. This clinical protocol has been developed to provide evidence-based recommendations for optimal damage-control resuscitation in the care of trauma patients with hemorrhage.

Comparative efficacy of sequential treatment and open abdomen approaches for corrosive abdominal hemorrhage due to inadequate drainage of duodenal leakage: a cohort study

BACKGROUND

Intra-abdominal bleeding resulting from inadequate drainage of duodenal leakage (DL) is typically caused by the corrosiveness of duodenal fluid. Open abdomen (OA) treatment addresses both the drainage and bleeding simultaneously. However, a sequential treatment (ST) approach involving hemostasis through transcatheter arterial embolization (TAE) followed by percutaneous drainage of source control has emerged as an alternative method. This study aimed to evaluate the prognosis of ST in cases of DL-induced intra-abdominal bleeding.

METHODS

This retrospective cohort study included 151 participants diagnosed with DL-induced intra-abdominal bleeding from January 2004 to December 2010, and January 2013 to December 2021. The ST and OA groups were established based on the treatment method applied. Propensity score-matching (PSM) matched patients in the ST group with those in the OA group.

RESULTS

Among the 151 patients, 61 (40.4%) died within 90 days after the bleeding episode. ST was associated with a lower mortality rate (28.2% vs. 51.3% adjusted odds ratio [OR] = 0.34; 95% confidence interval [CI] 0.17-0.68; P = 0.003) compared to OA. Following PSM, ST remained the only factor associated with reduced mortality (OR = 0.32; 95% CI 0.13-0.75; P = 0.009). Moreover, ST demonstrated a higher rate of initial hemostasis success before (90.1% [64/71] vs. 77.5% [62/80]; adjusted OR = 2.84; 95% CI 1.07-7.60; P = 0.04) and after PSM (94.4% [51/54] vs. 77.8% [42/54], adjusted OR = 3.85; 95% CI 2.15-16.82; P = 0.04). Additionally, ST was associated with a lower incidence of rebleeding within 90 days after the initial bleeding, before (7 vs. 23; adjusted OR 0.41; 95% CI 0.18-0.92; P = 0.03) and after PSM (5 vs. 14; adjusted OR 0.37; 95% CI 0.15-0.93; P = 0.03).

CONCLUSIONS

Applying ST involving TAE and subsequent percutaneous drainage might be superior to OA in lowering the mortality in DL-induced intra-abdominal hemorrhage.

Local Clays from China as Alternative Hemostatic Agents

In recent years, the coagulation properties of inorganic minerals such as kaolin and zeolite have been demonstrated. This study aimed to assess the hemostatic properties of three local clays from China: natural kaolin from Hainan, natural halloysite from Yunnan, and zeolite synthesized by our group. The physical and chemical properties, blood coagulation performance, and cell biocompatibility of the three materials were tested. The studied materials were characterized by using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). All three clays showed different morphologies and particle size, and exhibited negative potentials between pH 6 and 8. The TGA and DSC curves for kaolin and halloysite were highly similar. Kaolin showed the highest water absorption capacity (approximately 93.8% ± 0.8%). All three clays were noncytotoxic toward L929 mouse fibroblasts. Kaolin and halloysite showed blood coagulation effects similar to that exhibited by zeolite, indicating that kaolin and halloysite are promising alternative hemostatic materials.

Safety and efficacy of a kaolin-impregnated hemostatic gauze in cardiac surgery: A randomized trial

Objective

A kaolin-based nonresorbable hemostatic gauze, QuikClot Control+, has demonstrated effective hemostasis and safety when used for severe/life-threatening (grade 3/4) internal organ space bleeding. We evaluated the efficacy and safety of this gauze for mild to moderate (grade 1-2) bleeding in cardiac surgery compared with control gauze.

Methods

This was a randomized, controlled, single-blinded study of patients who underwent cardiac surgery between June 2020 and September 2021 across 7 sites with 231 subjects randomized 2:1 to QuikClot Control+ or control. The primary efficacy end point was hemostasis rate (ie, subjects achieving grade 0 bleed) through up to 10 minutes of bleeding site application, assessed using a semiquantitative validated bleeding severity scale tool. The secondary efficacy end point was the proportion of subjects achieving hemostasis at 5 and 10 minutes. Adverse events, assessed up to 30 days postsurgery, were compared between arms.

Results

The predominant procedure was coronary artery bypass grafting, and 69.7% and 29.4% were sternal edge and surgical site (suture line)/other bleeds, respectively. Of the QuikClot Control+ subjects, 121 of 153 (79.1%) achieved hemostasis within 5 minutes, compared with 45 of 78 (58.4%) controls (P < .001). At 10 minutes, 137 of 153 patients (89.8%) achieved hemostasis compared with 52 of 78 controls (68.4%) (P < .001). At 5 and 10 minutes, hemostasis was achieved in 20.7% and 21.4% more QuikClot Control+ subjects, respectively, compared with controls (P < .001). There were no significant differences in safety or adverse events between treatment arms.

Conclusions

QuikClot Control+ demonstrated superior performance in achieving hemostasis for mild to moderate cardiac surgery bleeding compared with control gauze. The proportion of subjects achieving hemostasis was more than 20% higher in QuikClot Control+ subjects at both timepoints compared with controls, with no significant difference in safety outcomes.

Safety and efficiency of femoral artery access closure using QuikClot Combat Gauze in patients with severe arterial calcification of access sites

Background

In order to achieve better hemostasis of puncture holes in the femoral artery (FA) after an endovascular procedure, this study evaluated the effect and safety of manual compression (MC) with QuikClot Combat Gauze (QIC) and with mechanical compression (using a C-clamp) of the common access site, the FA, in patients with peripheral arterial occlusive disease (PAOD) combined with anterior femoral artery calcification (AFAC).

Methods

We prospectively reviewed 100 patients receiving either MC with QIC or mechanical compression (control group) after endovascular intervention for PAOD plus AFAC from February 2014 to September 2018 in a single unit, which was assessed using computerized tomography angiography (CTA).

Results

The mean time to completion of hemostasis was 30±0 minutes in the control group and 18±2.20 minutes in the QIC group (P<0.001). The time to ambulation of the QIC and control groups was 4.38±0.46 and 4.86±0.30 hours (P<0.001), respectively. Eight (16%) patients in the control group had hematoma, as compared with one patient (2%) in the QIC group (P=0.031), while sixteen (32%) patients in the control group had ecchymosis, as compared with four (8%) in the QIC group (P=0.005). Use of QIC and coronary artery disease (CAD) were identified as independent factors correlated with an increased risk of minor complications.

Conclusions

QIC facilitated effective and safe hemostasis in patients with PAOD and AFAC.

Design and Preclinical Evaluation of Chitosan/Kaolin Nanocomposites with Enhanced Hemostatic Efficiency

In the current study, hemostatic compositions including a combination of chitosan and kaolin have been developed. Chitosan is a marine polysaccharide derived from chitins, a structural component in the shells of crustaceans. Both chitosan and kaolin have the ability to mediate a quick and efficient hemostatic effect following immediate application to injury sites, and thus they have been widely exploited in manufacturing of hemostatic composites. By combining more than one hemostatic agent (i.e., chitosan and kaolin) that act via more than one mechanism, and by utilizing different nanotechnology-based approaches to enhance the surface areas, the capability of the dressing to control bleeding was improved, in terms of amount of blood loss and time to hemostasis. The nanotechnology-based approaches utilized to enhance the effective surface area of the hemostatic agents included the use of Pluronic nanoparticles, and deposition of chitosan micro- and nano-fibers onto the carrier. The developed composites effectively controlled bleeding and significantly improved hemostasis and survival rates in two animal models, rats and rabbits, compared to conventional dressings and QuikClot^® Combat Gauze. The composites were well-tolerated as demonstrated by their in vivo biocompatibility and absence of clinical and biochemical changes in the laboratory animals after application of the dressings.