-
Turkish Neurosurgery 2023To present the configuration of the tentorial venous sinuses, and to determine the optimal incision zone on the tentorium cerebelli.
AIM
To present the configuration of the tentorial venous sinuses, and to determine the optimal incision zone on the tentorium cerebelli.
MATERIAL AND METHODS
This study has been completed with 24 autopsied cadavers. For every cadaver, firstly, supratentorial tissues were removed and tentorial measurements were noted, superior part of the tentorial sinuses was captured, and then infratentorial tissues were removed, and all the sinuses were checked and captured.
RESULTS
Average age of the studied 24 fresh cadavers was 50 years, wherein 4 were females and 20 were males. Tentorial sinus was presented in 87% of the cases, with 45% medial, 33% lateral, and 22% in the middle third of each tentorium half.
CONCLUSION
This study showed the pattern, incidence, location, and distribution of tentorial venous sinuses and tried to find the optimum incision zone by identifying sparse areas for the venous sinuses during transtentorial surgical approaches.
Topics: Male; Female; Humans; Middle Aged; Cranial Sinuses; Dura Mater; Cadaver; Surgical Wound; Head
PubMed: 36482851
DOI: 10.5137/1019-5149.JTN.37725-22.5 -
JAMA Surgery Feb 2022Pulmonary clots are seen frequently on chest computed tomography performed after trauma, but recent studies suggest that pulmonary thrombosis (PT) and pulmonary embolism... (Observational Study)
Observational Study
IMPORTANCE
Pulmonary clots are seen frequently on chest computed tomography performed after trauma, but recent studies suggest that pulmonary thrombosis (PT) and pulmonary embolism (PE) after trauma are independent clinical events.
OBJECTIVE
To assess whether posttraumatic PT represents a distinct clinical entity associated with the nature of the injury, different from the traditional venous thromboembolic paradigm of deep venous thrombosis (DVT) and PE.
DESIGN, SETTING, AND PARTICIPANTS
This prospective, observational, multicenter cohort study was conducted by the Consortium of Leaders in the Study of Traumatic Thromboembolism (CLOTT) study group. The study was conducted at 17 US level I trauma centers during a 2-year period (January 1, 2018, to December 31, 2020). Consecutive patients 18 to 40 years of age admitted for a minimum of 48 hours with at least 1 previously defined trauma-associated venous thromboembolism (VTE) risk factor were followed up until discharge or 30 days.
EXPOSURES
Investigational imaging, prophylactic measures used, and treatment of clots.
MAIN OUTCOMES AND MEASURES
The main outcomes of interest were the presence, timing, location, and treatment of any pulmonary clots, as well as the associated injury-related risk factors. Secondary outcomes included DVT. We regarded pulmonary clots with DVT as PE and those without DVT as de novo PT.
RESULTS
A total of 7880 patients (mean [SD] age, 29.1 [6.4] years; 5859 [74.4%] male) were studied, 277 with DVT (3.5%), 40 with PE (0.5%), and 117 with PT (1.5%). Shock on admission was present in only 460 patients (6.2%) who had no DVT, PT, or PE but was documented in 11 (27.5%) of those with PE and 30 (25.6%) in those with PT. Risk factors independently associated with PT but not DVT or PE included shock on admission (systolic blood pressure <90 mm Hg) (odds ratio, 2.74; 95% CI, 1.72-4.39; P < .001) and major chest injury with Abbreviated Injury Score of 3 or higher (odds ratio, 1.72; 95% CI, 1.16-2.56; P = .007). Factors associated with the presence of PT on admission included major chest injury (14 patients [50.0%] with or without major chest injury with an Abbreviated Injury Score >3; P = .04) and major venous injury (23 [82.1%] without major venous injury and 5 [17.9%] with major venous injury; P = .02). No deaths were attributed to PT or PE.
CONCLUSIONS AND RELEVANCE
To our knowledge, this CLOTT study is the largest prospective investigation in the world that focuses on posttraumatic PT. The study suggests that most pulmonary clots are not embolic but rather result from inflammation, endothelial injury, and the hypercoagulable state caused by the injury itself.
Topics: Abbreviated Injury Scale; Adult; Diagnosis, Differential; Female; Humans; Male; Prospective Studies; Pulmonary Embolism; Risk Factors; Trauma Centers; United States; Wounds and Injuries
PubMed: 34910098
DOI: 10.1001/jamasurg.2021.6356 -
Japanese Journal of Radiology Mar 2023Pelvic fractures are common in cases of blunt trauma, which is strongly associated with mortality. Transcatheter arterial embolization is a fundamental treatment... (Review)
Review
Pelvic fractures are common in cases of blunt trauma, which is strongly associated with mortality. Transcatheter arterial embolization is a fundamental treatment strategy for fatal arterial injuries caused by blunt pelvic trauma. However, vascular injuries due to blunt pelvic trauma can show various imaging findings other than arterial hemorrhage. We present a pictorial review of common and uncommon vascular injuries, including active arterial bleeding, pseudoaneurysm, arteriovenous fistula, arterial occlusion, vasospasm, and active venous bleeding. Knowledge of these vascular injuries can help clinicians select the appropriate therapeutic strategy and thus save lives.
Topics: Humans; Vascular System Injuries; Pelvis; Hemorrhage; Embolization, Therapeutic; Arteriovenous Fistula; Wounds, Nonpenetrating
PubMed: 36350523
DOI: 10.1007/s11604-022-01355-1 -
Medicina (Kaunas, Lithuania) Aug 2022Background and Objectives: Retrograde free venous flaps represent a separate entity among free venous flaps: their physiology is still unclear, but they provide an...
Background and Objectives: Retrograde free venous flaps represent a separate entity among free venous flaps: their physiology is still unclear, but they provide an immediate visible refill after reconnection, with a similar behaviour to conventional flaps. Therefore, the dimensions and the indications of these flaps can be extended beyond what was previously believed, and they can be easily customized, including with respect to tendons and nerves. Nevertheless, they are still debated and regarded as unsafe. Materials and Methods: From 2012 to 2019, we performed 31 retrograde free venous flaps on 31 patients to reconstruct hands, digits, and in one case the heel. All the flaps were arterialized in a retrograde manner; the donor site was the forearm in 28 cases, the foot in 2 cases, and the calf in 1 case. We recorded the size, vein architecture, donor site, donor artery, donor morbidity, function for composite and non-composite flaps, immediate complications, late complications, survival rate, and the number of revisions. We recorded the hand function when appropriate. A total of 10 flaps were also intraoperatively studied with indocyanine green to monitor their hemodynamical behaviour. Results: All the patients were followed for an average of 8 months (6−15). The flap dimensions ranged from 6 cm2 to 136 cm2. All the flaps, except two that had complete necrosis, survived. Two flaps had partial necrosis. There was no correlation between necrosis and the size of the flap, with one case of necrosis and one of partial necrosis in the small flaps (<10 cm2). None of the cases with partial necrosis needed a new flap. Two flaps developed a late arterio-venous shunt that was ligated. Conclusions: The retrograde free venous flaps proved to be a useful tool for complex reconstructions of the hand and extremities. They can provide a large island of pliable skin and composite tissue with tendons and nerves, but surgeons must be aware of some caveats.
Topics: Forearm; Hand Injuries; Humans; Necrosis; Soft Tissue Injuries; Surgical Flaps; Veins
PubMed: 36013532
DOI: 10.3390/medicina58081065 -
Journal of Vascular Surgery. Venous and... Apr 2016Extremity venous injury management remains controversial. The purpose of this communication is to offer perspective as well as experiential and technical insight into... (Review)
Review
OBJECTIVE
Extremity venous injury management remains controversial. The purpose of this communication is to offer perspective as well as experiential and technical insight into extremity venous injury repair.
METHODS
Available literature is reviewed and discussed. Historical context is provided. Indication, the decision process for repair, including technical conduct, is delineated. In particular, the authors' experiences in both civilian and wartime injury are used for perspective.
RESULTS
Extremity venous injury repair was championed within data from the Vietnam Vascular Registry. However, patterns of extremity venous injury differ between combat and civilian settings. Since Vietnam, civilian descriptive series opine the benefits and potential complications associated with both venous injury repair and ligation. These surround extremity edema, chronic venous insufficiency, thromboembolism, and limb loss. Whereas no clear superiority in either approach has been identified to date, there appears to be no increased risk of pulmonary embolism or chronic venous changes with repair. Newer data from the wars in Iraq and Afghanistan and meta-analysis have reinforced this and also have suggested limb salvage benefit for extremity venous repair in combined arterial and venous injuries in modern settings. The patient's physiologic state and associated injury drive five triage categories suggesting vein injury management. Vein repair thrombosis occurs in a significant proportion, yet many recanalize and possibly have a positive impact on limb venous return. Further, early decompression favors reduced blood loss, acute edema, and inflammation, supporting collateral development. Large soft tissue injury minimizing collateral capacity increases the importance of repair. Constructs of repair are varied with modest differences in patency. Venous shunting is feasible, but specific roles remain nebulous.
CONCLUSIONS
An aggressive posture toward extremity venous injury repair seems justified today because of the likely role in reducing venous hypertensive sequelae as well as a potential role in limb salvage. Appropriate triage selection for extremity vein repair is essential.
Topics: Afghanistan; Amputation, Surgical; Humans; Iraq; Limb Salvage; Lower Extremity; Retrospective Studies; Treatment Outcome; Vascular Surgical Procedures; Veins; Vietnam
PubMed: 26993874
DOI: 10.1016/j.jvsv.2015.07.003 -
Deutsches Arzteblatt International Sep 2016Direct (non-vitamin-K-dependent) oral anticoagulants (DOAC) are given as an alternative to vitamin K antagonists (VKA) to prevent stroke and embolic disease in patients... (Review)
Review
BACKGROUND
Direct (non-vitamin-K-dependent) oral anticoagulants (DOAC) are given as an alternative to vitamin K antagonists (VKA) to prevent stroke and embolic disease in patients with atrial fibrillation that is not due to pathology of the heart valves. Fatal hemorrhage is rarer when DOACs are given (nonvalvular atrial fibrillation: odds ratio [OR] 0.68; 95% confidence interval [95% CI: 0.48; 0.96], and venous thromboembolism: OR 0.54; [0.22; 1.32]). 48% of emergency trauma patients need an emergency operation or early surgery. Clotting disturbances elevate the mortality of such patients to 43%, compared to 17% in patients without a clotting disturbance. This underscores the impor tance of the proper, targeted treatment of trauma patients who are aking DOAC.
METHODS
This review is based on articles retrieved by a selective search in PubMed and on a summary of expert opinion and the recommendations of the relevant medical specialty societies.
RESULTS
Peak DOAC levels are reached 2-4 hours after the drug is taken. In patients with normal renal and hepatic function, no drug accumulation, and no drug interactions, the plasma level of DOAC 24 hours after administration is generally too low to cause any clinically relevant risk of bleeding. The risk of drug accumulation is higher in patients with renal dysfunction (creatinine clearance [CrCl] of 30 mL/min or less). Dabigatran levels can be estimated from the thrombin time, ecarin clotting time, and diluted thrombin time, while levels of factor Xa inhibitors can be estimated by means of calibrated chromogenic anti-factor Xa activity tests. Routine clotting studies do not reliably reflect the anticoagulant activity of DOAC. Surgery should be postponed, if possible, until at least 24-48 hours after the last dose of DOAC. For patients with mild, non-life threatening hemorrhage, it suffices to discontinue DOAC; for patients with severe hemorrhage, there are special treatment algorithms that should be followed.
CONCLUSION
DOACs in the setting of hemorrhage are a clinical challenge in the traumatological emergency room because of the inadequate validity of the relevant laboratory tests. An emergency antidote is now available only for dabigatran.
Topics: Administration, Oral; Anticoagulants; Dose-Response Relationship, Drug; Drug Administration Schedule; Emergency Medical Services; Hemorrhage; Humans; Practice Guidelines as Topic; Stroke; Thromboembolism; Treatment Outcome; Wounds and Injuries
PubMed: 27658470
DOI: 10.3238/arztebl.2016.0575 -
Journal of Vascular Surgery. Venous and... Sep 2019Athletes are generally young, high-functioning individuals. Pathology in this cohort is associated with a decrease in function and consequently has major implications on... (Review)
Review
BACKGROUND
Athletes are generally young, high-functioning individuals. Pathology in this cohort is associated with a decrease in function and consequently has major implications on quality of life. Venous disorders can be attributed to a combination of vascular compression with a high burden of activity.
OBJECTIVE
This article promotes increased awareness of these uncommon conditions specific to the athlete by summarizing pathophysiology, clinical features, investigation, and treatment protocols for use in clinical practice. Prognostic outcomes of these management regimens are also discussed, allowing for clinicians to counsel these high-functioning individuals appropriately. With the aim of providing an overview of sport-related venous pathology, a literature review was undertaken identifying articles that were independently reviewed by the authors.
RESULTS
Lower limb venous thrombosis has been identified in young, high-functioning athletes attributed to both compression-related venous trauma, associated with repetitive movements resulting in intimal damage, and blunt trauma. The diagnosis and treatment follow the same protocols as for the general population. Of note, early ambulation is advocated, with an aim to return to premorbid (noncontact) function within 6 weeks. Athletes performing high-intensity repetitive upper limb movement, such as baseball players, are predisposed to upper limb deep venous thrombosis (DVT). Diagnosis follows the same protocols as for lower extremity DVT; however, the optimal treatment strategy remains debated. Current guidelines advocate the use of anticoagulation alone. A specific subset of primary upper limb DVT is effort thrombosis, where there is compression at the level of the thoracic outlet. Thrombolysis with first rib resection is indicated in the acute setting within 14 days. In cases of complete occlusion, surgical decompression with venous reconstruction may be required. Popliteal vein entrapment syndrome is also discussed. This entity has been identified as an overuse injury associated with popliteal vein compression. Duplex ultrasound examination is indicated as a first-line investigation, with conservative noninvasive options considered as an initial management strategy. Chronic venous insufficiency or persistent symptoms may require subsequent surgical decompression.
CONCLUSIONS
Key conditions including upper extremity and lower extremity venous thrombosis, venous aneurysms, Paget-Schroetter syndrome (effort thrombosis), and popliteal vein entrapment syndrome are discussed. Further studies evaluating long-term outcomes on morbidity for current treatment regimens in upper extremity DVT, effort thrombosis, venous thoracic outlet syndrome, and popliteal venous entrapment syndrome are required.
Topics: Aneurysm; Athletic Injuries; Humans; Risk Factors; Thoracic Outlet Syndrome; Treatment Outcome; Vascular System Injuries; Veins; Venous Insufficiency; Venous Thrombosis; Wounds, Nonpenetrating
PubMed: 31231058
DOI: 10.1016/j.jvsv.2019.03.012 -
BMC Medicine Apr 2015Numerous, often multi-faceted regimens are available for treating complex wounds, yet the evidence of these interventions is recondite across the literature. We aimed to... (Review)
Review
BACKGROUND
Numerous, often multi-faceted regimens are available for treating complex wounds, yet the evidence of these interventions is recondite across the literature. We aimed to identify effective interventions to treat complex wounds through an overview of systematic reviews.
METHODS
MEDLINE (OVID interface, 1946 until October 26, 2012), EMBASE (OVID interface, 1947 until October 26, 2012), and the Cochrane Database of Systematic Reviews (Issue 10 of 12, 2012) were searched on October 26, 2012. Systematic reviews that examined adults receiving care for their complex wounds were included. Two reviewers independently screened the literature, abstracted data, and assessed study quality using the Assessment of Multiple Systematic Reviews (AMSTAR) tool.
RESULTS
Overall, 99 systematic reviews were included after screening 6,200 titles and abstracts and 422 full-texts; 54 were systematic reviews with a meta-analysis (including data on over 54,000 patients) and 45 were systematic reviews without a meta-analysis. Overall, 44% of included reviews were rated as being of high quality (AMSTAR score ≥ 8). Based on data from systematic reviews including a meta-analysis with an AMSTAR score ≥ 8, promising interventions for complex wounds were identified. These included bandages or stockings (multi-layer, high compression) and wound cleansing for venous leg ulcers; four-layer bandages for mixed arterial/venous leg ulcers; biologics, ultrasound, and hydrogel dressings for diabetic leg/foot ulcers; hydrocolloid dressings, electrotherapy, air-fluidized beds, and alternate foam mattresses for pressure ulcers; and silver dressings and ultrasound for unspecified mixed complex wounds. For surgical wound infections, topical negative pressure and vacuum-assisted closure were promising interventions, but this was based on evidence from moderate to low quality systematic reviews.
CONCLUSIONS
Numerous interventions can be utilized for patients with varying types of complex wounds, yet few treatments were consistently effective across all outcomes throughout the literature. Clinicians and patients can use our results to tailor effective treatment according to type of complex wound. Network meta-analysis will be of benefit to decision-makers, as it will permit multiple treatment comparisons and ranking of the effectiveness of all interventions. Please see related article: http://dx.doi.org/10.1186/s12916-015-0326-3.
Topics: Humans; Wound Healing; Wounds and Injuries
PubMed: 25899006
DOI: 10.1186/s12916-015-0288-5 -
JPMA. the Journal of the Pakistan... Jun 2020Inferior vena caval (IVC) injuries are uncommon and challenging to treat. Less than 5% of patients with penetrating abdominal trauma and less than 0.5% of patients with... (Review)
Review
Inferior vena caval (IVC) injuries are uncommon and challenging to treat. Less than 5% of patients with penetrating abdominal trauma and less than 0.5% of patients with blunt abdominal trauma have this injury. Patient can present with intraperitoneal haemorrhage or with a contained retroperitoneal haematoma. Mostly it is associated with other abdominal structures injuries. Most commonly injured segment is infrarenal IVC. Operative strategy is different for each segment of injured vein. Infrahepatic injuries are exposed by medial visceral rotation. Retrohepatic and suprahepatic injuries need infrequent exposures. Mortality remains high and range between 31-51% for the patient brought alive to the operative room. Glasgow coma scale, level of injury, haemodynamic status at presentation and free blood in the peritoneal cavity are some of the predictive factors for mortality in these patients.
Topics: Abdominal Injuries; Glasgow Coma Scale; Hematoma; Humans; Vena Cava, Inferior; Wounds, Nonpenetrating
PubMed: 32810108
DOI: 10.5455/JPMA.21107 -
The Journal of Investigative Dermatology Oct 2018Animal models have been developed to study the complex cellular and biochemical processes of wound repair and to evaluate the efficacy and safety of potential... (Review)
Review
Animal models have been developed to study the complex cellular and biochemical processes of wound repair and to evaluate the efficacy and safety of potential therapeutic agents. Several factors can influence wound healing. These include aging, infection, medications, nutrition, obesity, diabetes, venous insufficiency, and peripheral arterial disease. Lack of optimal preclinical models that are capable of properly recapitulating human wounds remains a significant translational challenge. Animal models should strive for reproducibility, quantitative interpretation, clinical relevance, and successful translation into clinical use. In this concise review, we discuss animal models used in wound experiments including mouse, rat, rabbit, pig, and zebrafish, with a special emphasis on impaired wound healing models.
Topics: Animals; Biomedical Research; Dermatology; Disease Models, Animal; Wound Healing; Wounds and Injuries
PubMed: 30244718
DOI: 10.1016/j.jid.2018.08.005