Subcutaneous Injection of Tranexamic Acid to Reduce Bleeding During Dermatologic Surgery: A Double-Blind, Placebo-Controlled, Randomized Clinical Trial.

BACKGROUND: Topical application, oral, and IV injection of tranexamic acid (TXA) have been used to reduce surgical bleeding. OBJECTIVE: To evaluate the safety and efficacy of TXA injected subcutaneously to reduce bleeding during dermatologic surgery. METHODS: In this double-blinded, placebo-controlled, randomized prospective study, 131 patients were randomized to subcutaneous injection of lidocaine 2% diluted 1:1 with either saline (placebo) or TXA 100 mg/1 mL before surgery. Before the second stage or closure, size measurements of bloodstain impregnation on Telfa and surgical wound size were recorded and analyzed using mixed-effects linear regression. Subjective evaluation of hemostasis was performed using 4-point scale grading and analyzed using Fischer's exact test. RESULTS: One hundred twenty-seven patients completed the study. The bloodstain to surgical wound size ratio was smaller in the TXA group (1.77) compared with the placebo group (2.49) (p < .001). An improved effect of TXA on bleeding was observed in the subgroup of patients receiving anticoagulants (mean difference; 95% confidence interval; -0.83; -1.20 to -0.46 p < .001). The subjective hemostasis assessment was significantly better in the TXA group overall (p = .043) and anticoagulant subgroup (p = .001) compared with the placebo group. CONCLUSION: Subcutaneous injection of TXA was safe, reduced bleeding during dermatologic surgery, and particularly effective for patients receiving anticoagulation treatment.

Role of heterotrimeric G proteins in platelet activation and clot formation in platelets treated with integrin αIIbß3 inhibitor.

Mechanisms of platelet activation are triggered by thrombin, adenosine diphosphate (ADP), epinephrine, thromboxane A2, and other soluble agonists which induce signaling via heterotrimeric Gαq, Gαi, and Gα12/13 proteins. We have undertaken a study addressing the contribution of these G proteins to platelet activation and clot formation in the presence of eptifibatide, thus excluding outside-in signaling provided by integrin αIIbß3-fibrinogen engagement. Selective and combined activation of the G proteins was achieved by using combinations of platelet agonists and inhibitors. Platelet activation in platelet-rich plasma was evaluated by P-selectin expression using flow cytometry. Contribution of platelets to whole blood clotting was assessed by rotation thromboelastometry (ROTEM). Selective signaling of Gαq or Gαi but not Gα12/13 promoted P-selectin expression. Further enhancement of P-selectin expression was achieved by ADP-induced combined signaling of Gαq and Gαi, and to more extent by U46619 at high concentration (1.5 µM) induced combined signaling of Gαq and Gα12/13 while maximal P-selectin expression was achieved by thrombin receptor-activating peptide (TRAP)-induced combined signaling of Gαq, Gαi, and Gα12/13. In ROTEM, selective activation of Gαq, Gαi, or Gα12/13 failed to affect blood clotting. Combined signaling of Gαq and Gαi or Gαq and Gα12/13 or all three G proteins shortened the clotting time and stimulated clot strength. Pretreatment of platelets with acetylsalicylic acid did not change the effect of ADP but inhibited the effect of TRAP. Signaling of Gαq and Gα12/13 triggered by U46619 also stimulated clot formation. Combined signaling of either Gαq and Gαi or Gαq and Gα12/13 is sufficient to stimulate maximal platelet activation and enhanced clot formation in platelets treated with inhibitor of integrin αIIbß3. It could be suggested that outside-in signaling is not necessarily required to fulfill these platelet functions.

Reevaluation of the arterial blood supply of the auricle.

The anatomical basis for auricular flaps used in multiple aesthetic and reconstructive procedures is currently based on a random distribution of the underlying arterial network. However, recent findings reveal a systematic pattern as opposed to the present concepts. Therefore, we designed this study to assess the arterial vascular pattern of the auricle in order to provide reliable data about the vascular map required for surgical interventions. Sixteen human auricles from eight body donors (five females/three males, 84.33 ± 9.0 years) were investigated using the unique 'Spalteholz' method. After arterial injection of silicone, a complete transparency of the tissue was achieved and the auricular arteries and branches were visible. Qualitative and quantitative evaluation of the arterial vascular pattern was performed. The superior and the inferior anterior auricular artery provided the vascular supply to the helical rim, forming an arcade, i.e. helical rim arcade. On the superior third of the helical rim another arcade was confirmed between the superior anterior auricular artery and the posterior auricular artery (PAA), i.e. the helical arcade. The perforators of the PAA were identified lying in a vertical line 1 cm posterior to the tragus, supplying the concha, inferior crus, triangular fossa, antihelix and the earlobe. The results of this study confirmed the constant presence of the helical rim arcade (Zilinsky-Cotofana), consistent perforating branches of the PAA, and the helical arcade (Erdman), and will help and guide physicians performing auricular surgeries toward fast and simple procedures with optimal patient satisfaction.

Topical Hemostatic-Anesthetic Solution to Reduce Bleeding During Mohs Micrographic Surgery: A Case Control Study.

BACKGROUND: Between stages of Mohs micrographic surgery, the wound is dressed and the patient waits for the histopathological results.
OBJECTIVE: To investigate the efficacy of a hemostatic-anesthetic solution-impregnated gauze in decreasing bleeding between Mohs stages.
MATERIALS AND METHODS: Twenty patients were treated with a hemostatic-anesthetic solution composed of tranexamic acid, adrenaline, and lidocaine (TAL), and 20 others were treated with a saline solution for control. At the second Mohs stage, size measurements of the blood stain on a Telfa pad and the defect were recorded. The Rotation Thromboelastometry Method (ROTEM) was used to investigate a possible effect of lidocaine and adrenaline on the clot stability induced by tranexamic acid.
RESULTS: The ratio of blood stain size to Mohs defect size in the hemostatic anesthetic solution group was 1:1.47, whereas the ratio in the control saline group was 1:3.37 (P<.001). Results of the ROTEM test showed that lidocaine and adrenaline did not interfere with the effect of tranexamic acid on clot formation and stability.
CONCLUSION: The application of gauze impregnated with tranexamic acid, adrenaline, and lidocaine on a surgical wound may be effective in reducing bleeding between Mohs stages.

J Drugs Dermatol. 2016;15(7):851-855.

The Anatomy of the Aging Face: A Review.

Rejuvenative procedures of the face are increasing in numbers, and a plethora of different therapeutic options are available today. Every procedure should aim for the patient's safety first and then for natural and long-lasting results. The face is one of the most complex regions in the human body and research continuously reveals new insights into the complex interplay of the different participating structures. Bone, ligaments, muscles, fat, and skin are the key players in the layered arrangement of the face.Aging occurs in all involved facial structures but the onset and the speed of age-related changes differ between each specific structure, between each individual, and between different ethnic groups. Therefore, knowledge of age-related anatomy is crucial for a physician's work when trying to restore a youthful face.This review focuses on the current understanding of the anatomy of the human face and tries to elucidate the morphological changes during aging of bone, ligaments, muscles, and fat, and their role in rejuvenative procedures.

A substitute for skin grafts, flaps, or internal tissue expanders in scalp defects following tumor ablative surgery.

BACKGROUND: The skin of the scalp is relatively thick, minimally mobile, with distinct hair distribution. TopClosure® is a novel device for skin stretching and secure wound closure. OBJECTIVES: To evaluate the efficacy of the TopClosure® system in primary closure of moderate and large scalp defects, as a substitute for skin grafts, flaps, and tissue expanders. METHODS: We report a retrospective series of 8 patients requiring resection of 9 scalp tumors resulting with moderate to large size defects that otherwise would have required reconstruction with skin grafts, flaps, or tissue expanders. TopClosure® was applied for intraoperative cycles of stress-relaxation, followed, when indicated, by additional steps of mechanical creep and scar secure. RESULTS: Skin defects, averaging 3.5 cm, were managed by TopClosure®, enabling, primary closure in all wounds. Immediate wound edge approximation was reached through stress-relaxation in 2 wounds by heavy tension sutures within one hour. Further skin stretching by mechanical creep was required in 7 wounds, achieving staged primary closure in an outpatient setting. TopClosure® was further applied to secure the skin for up to 3 weeks following surgery. CONCLUSIONS: The TopClosure system, effectively, aided closure of moderate and large scalp defects by stress-relaxation and mechanical creep and serving as a topical tension-relief platform for tension sutures, allowing mobilization of skin and subcutaneous tissue without undermining or need of drainage, for early, direct wound closure. Local complications were minimal and donor site morbidity was eliminated. Surgical time, hospital stay and costs were reduced, and post-operative wound aesthetics were improved.

[Clinical utility of reflectance confocal microscopy for the non-invasive diagnosis of lentigo maligna melanoma].

BACKGROUND: Lentigo maligna melanoma (LMM), a melanoma subtype that arises on sun-damaged facial skin, is difficult to diagnose clinically. Patients and physicians are reluctant to perform unnecessary facial biopsies. Reflectance confocal microscopy (RCM) is a novel technique for non-invasive skin imaging at cellular-level resolution. RCM increases the accuracy of melanoma diagnosis. AIMS: To describe the diagnostic utility of RCM in cases of clinically and dermatoscopically equivocal pigmented skin lesions suspicious for LMM. METHODS: This is a retrospective case series derived from the population of patients undergoing periodic skin cancer screening at a tertiary hospital clinic that specializes in skin cancer diagnosis. All patients consented to RCM imaging as an ancillary test prior to the decision on performing a biopsy in the facial lesion. RESULTS: We report on four patients who presented clinically and dermatoscopically equivocal pigmented skin lesions in the head and neck region, with differential diagnosis of LMM. Furthermore, in two patients, a prior incisional biopsy indicated a benign diagnosis upon histopathological analysis. In all cases, RCM examination showed specific criteria for LMM. The RCM diagnosis of LMM allowed direct referral for excisional surgery in three patients. In another patient, RCM findings guided incisional biopsy-site selection to a focus that revealed histopathology clear-cut criteria for LMM. CONCLUSIONS: RCM is a very useful adjunct to the non-invasive diagnosis of LMM.

The temporal suspension flap for malar defects: a novel technique.

Close opposition of full-thickness skin grafts to the recipient wound bed is felt to be critical for graft survival. This is usually accomplished by bolster dressings, basting sutures, or both. Herein, we describe a facile and rapid technique for placing quilting sutures in full-thickness grafts on the ear using a plain gut suture with a short, straight needle. This technique is especially valuable in facilitating precise approximation of grafts within the fossae of the anterior ear. In our experience, this approach promotes graft survival and produces excellent cosmetic results.

Nasal ala reconstruction with a crus helix composite graft: a stepladder approach.

BACKGROUND: Defects of the nasal ala present a complex reconstructive challenge. Composite grafts comprise all layers required to successfully reconstruct these full thickness deformities making them the ideal reconstructive method, yet they are usually avoided because of unjustified disreputable failure rates. OBJECTIVE: The authors introduce a stepladder approach for alar reconstruction with a crus of helix composite graft according to the severity and complexity of the defect. METHODS: Data from 25 patients who underwent correction of full thickness alar defects with composite grafts was collected and reviewed. RESULTS: There were no complete graft failures in any of the cases. Ten patients (40%) had partial graft necrosis ranging from 5 to 50% (average 18%); two of them (20%) were heavy smokers. CONCLUSIONS: Composite grafts should be considered for reconstruction of full thickness nasal ala defects, given the correct surgical technique is implemented.

Delay techniques for local flaps in dermatologic surgery.

Local flaps may be required to reconstruct defects on the face, neck, and scalp. Occasionally, delay techniques are indicated to reduce the risk for flap ischemia and subsequent necrosis. Delay may be employed before the flap is raised, as done to improve blood supply to a random flap when length to breadth proportions are not ideal, or after the flap is raised and before separation of the pedicle in the final reconstructive step to improve vascularity in the distal end of an interpolation flap. We present our techniques and results of delay procedures for interpolation and similar flaps.

"Wet behind the ears": the postauricular training ground for local flaps.

Early in the course of surgical education, dermatologic and plastic surgery trainees shift from theory to practice. This shift must be done cautiously so as not to cause unnecessary damage to the patient, especially when attempting to reconstruct soft tissue defects on the face. Helical rim defects present an excellent opportunity because the postauricular region provides a safe environment for novice surgeons to practice the theoretical and manual aspects of basic flap reconstruction. This paper explains key features on how to plan basic flaps based on postauricular tissues.

Back to basics: reconstruction of defects on the lower half of the nose.

BACKGROUND: Surgical reconstruction of defects on the lower half of the nose mandates special considerations. Simple excision and suturing might cause a depressed scar and nostril flaring. Hence, the preoperative plan should be designed properly to avoid disfigurement and to achieve a successful reconstruction. OBJECTIVE: Three basic reconstructive concepts are essentially combined: 1.) The ratio between scar length and defect diameter should be extended beyond the standard 3:1 ratio; 2.) The defect should be positioned asymmetrically within the inferior half of the excision outline; and 3.) Para-median defects mandate an inferior, horizontal advancement ("sliding") flap to avoid nostril flaring. A salvage technique is also discussed. METHODS: Data from patients treated by Mohs micrographic surgery for tumors of the inferior aspect of the nasal dorsum and reconstructed according to the proposed course of action was collected and reviewed. RESULTS: The proposed reconstructive path proved successful for all patients. Although one case required salvage skin grafting, all patients had aesthetically pleasing results. No postoperative complications were noted. CONCLUSIONS: Simple excision and primary suturing is a viable method for treating lesions on the lower half of the nose, provided that the surgeon follows a set of basic reconstructive principles.

The hatchet and bilobed flaps revisited: shedding new light on traditional concepts.

BACKGROUND: The bilobed and hatchet flaps are well-accepted reconstructive options for the correction of defects of the lower third of the nose. Optimal utilization of these flaps depends on understanding the characteristics of each flap as well as anatomic considerations related to the distal nasal area. Disregarding the limitations of either method may lead to flap failure and unacceptable aesthetic results. OBJECTIVE: We present three original ideas: 1) a bilobed flap may be considered as a hatchet flap with a Z-plasty; 2) the trap door deformity (TDD) associated with a bilobed flap can be used as an advantage; and 3) an easy method for preoperative planning of a bilobed flap. METHODS: We collected data from patients who underwent excision of basal cell carcinoma (BCC) of the distal third of the nose and reconstruction with a hatchet or a bilobed flap within the last 20 years. RESULTS: Favorable cosmetic results were achieved when a hatchet flap was used to reconstruct defects of the inferior third of the nasal side wall, above or bordered with the alar crease, and when a bilobed flap was used to reconstruct nasal tip para-medial defects above the lower lateral cartilage convexity. CONCLUSIONS: We suggest choosing between the hatchet and bilobed flaps for nasal reconstruction according to the defect location as outlined by our findings.

Complex forehead defects: a novel reconstructive technique and review of available methods.

Complex forehead defects may result from excision of tumors or trauma. The reconstructive challenge is determined by the extent of tissue loss, the quality of the remaining tissue, possibly comprised vascular supply to the affected region, and special considerations (eg, exposed bone or injury to underlying structures). This paper describes a novel reconstructive approach to correct a complex forehead defect with exposed bone and discusses the armamentarium of reconstructive options for such cases.

Defying consensus: correct sizing of full-thickness skin grafts.

BACKGROUND: Full-Thickness skin grafts are routinely used to reconstruct defects throughout the body. When planning the size of the graft, the surgeon usually copies a template from the defect and measures the graft to fit its full dimensions. This may lead to an oversized graft, resulting an unaesthetic outcome. OBJECTIVE: To evaluate discrepancy in size between the excised full-thickness skin and the excision (donor) site. METHODS: Data from 20 cases of full-thickness excisions was reviewed and analyzed. RESULTS: There was a considerable difference in length of both the short and long axes between the excised full-thickness skin and the excision site. CONCLUSIONS: The initial size of a full-thickness skin graft should be smaller than the defect it is planned to cover.

A new simple, safe, and easy solution for upper lip dermabrasion.

BACKGROUND: Upper lip wrinkling is a common complaint of patients seeking perioral rejuvenation. Lately, manual dermabrasion has become more popular due to its safety, minimal cost, and favorable results. In several hospitals, the ability to efficiently sterilize sand paper has been questioned. METHODS: Between 2007 and 2010, 29 patients underwent manual dermabrasion of the skin of the upper lip using an electric cautery scratch pad during their surgeries. RESULTS: The average patient was aged 60.2 years. The average healing period was 5.8 days. Patient satisfaction from the procedure ranged from very good to excellent. No serious or long lasting complications have been encountered during our follow-up period.

Reconstruction of full-thickness defects with bovine-derived collagen/elastin matrix: a series of challenging cases and the first reported post-burn facial reconstruction.

Reconstruction of full-thickness defects may benefit from integration of dermal substitutes, which serve as a foundation for split-thickness skin grafts, thus enhancing short and long-term results. We present a series of 7 patients who were treated between 2010 and 2012 for complicated full-thickness defects by the second-generation collagen/elastin matrix Matriderm® covered by a split-thickness skin graft. The defects resulted from malignancy resection, trauma, and post-burn scar reconstruction. Overall graft take was excellent and no complications were noted regarding the dermal substitute. Graft quality was close to normal skin in terms of elasticity, pliability, texture, and color. Good contour and cushioning of defects in weight bearing areas was also achieved. Matriderm was found to be a useful adjunct to full-thickness defect reconstruction, especially in difficult areas where the desired result is a scar of the highest quality possible.

Simple continuous suture versus continuous horizontal mattress suture for plication of abdominal fascia: which is better?

BACKGROUND: Abdominal fascia plication using a simple continuous suture can sometimes cause tears in the fascia. This problem can be circumvented when the continuous horizontal mattress suture is used. No data exist from comparing the two suturing techniques. The aim of this study was to examine which technique can potentially cause greater tissue damage. The time required to perform each type of suture was also recorded. METHODS: Wound closure pads were plicated using the simple continuous and continuous horizontal mattress techniques performed by a single operator using Ethilon 2-0 nylon sutures. To verify their resilience, plastic bags were inflated beneath the pads to 30, 60, and 120 mmHg and tears were recorded. The time needed to perform the procedures was recorded using a stopwatch. RESULTS: Mean time for the continuous vertical mattress suture was 87 s and for the simple continuous suture 116 s. Tears in the pad that was plicated with the simple continuous pattern were significantly longer than those in the pad plicated with the continuous horizontal mattress pattern (fissure mean length ± SD = 3.958 ± 0.157 vs. 2.736 ± 0.157, respectively, p < 0.001). This finding was true for each of the three measured pressures (fissure mean length for 30 mmHg was 3.40 ± 1.807 vs. 2.12 ± 1.709 cm; for 60 mmHg, 3.94 ± 2.90 vs. 2.90 ± 1.893 cm; and for 120 mmHg, 4.54 ± 1.924 vs. 3.19 ± 2.110 cm; p < 0.001). CONCLUSIONS: Continuous horizontal mattress pattern sutures were found to be superior to simple continuous pattern sutures in the suggested model, in terms of suturing time and damage to the pad. Further research in human subjects is still required. LEVEL OF EVIDENCE II: This journal requires that authors assign a level of evidence to each article.

3D Mohs surgery: a new concept.

Although Mohs surgery is considered a skin-sparing technique, when dealing with aggressive skin tumor that penetrates the deep tissues, the Mohs surgeon usually sacrifices uninvolved skin. We present our technique of 3D Mohs as a new concept for skin-sparing surgery. After raising a skin flap above the residual tumor, Mohs resection was performed on the deep tissues horizontally and simultaneously on the inner plan of the flap vertically. When "clear" borders were achieved, the skin flap was sutured back into place. The results show that the defect was significantly smaller, and the hair on the Mohs-treated vertical flap continue to grow, thus contributing to a more aesthetic outcome. We conclude that careful use of the 3D Mohs technique as we describe spares the healthy uninvolved skin and offers better aesthetic and functional result.

Subcutaneous tranexamic acid in upper eyelid blepharoplasty: a prospective randomized pilot study.

OBJECTIVE: Postoperative ecchymoses or hematomas can prolong healing from surgery, and a search for locally administered agents that decrease bleeding is warranted. The objective of this study is to evaluate whether preoperative subcutaneous injection of tranexamic acid (TXA) reduces intra- and postoperative bleeding or ecchymoses in skin-only upper eyelid blepharoplasty surgery. DESIGN: This is a prospective randomized, double-blind, controlled study. PARTICIPANTS: We included 34 consecutive patients who were referred to an upper eyelid blepharoplasty surgery in our institution. METHODS: The patients were equally randomized to a preoperative local injection of lidocaine mixed with either TXA or normal saline. All patients stopped antiaggregates 1 week before surgery. All surgeries were performed by a single surgeon who was unaware of group assignment. Total surgical time, cumulative time of cautery use, blood loss, the surgeon's assessment of bleeding extent, pain level reported by the patient, periocular ecchymoses during the first postoperative week, and time for patient's return to normal daily activity were recorded. RESULTS: There was a trend toward smaller ecchymoses in the TXA group compared with the placebo group on the seventh day (p = 0.072). There were no group differences in total surgery time, cumulative cautery time, net blood weight in surgical pads, patient-reported pain level, surgeon's assessment of hemostasis, or periocular ecchymosis size on the first postoperative day. CONCLUSIONS: Subcutaneous TXA was associated with similar intra- and postoperative hemorrhage in upper eyelid blepharoplasty compared with placebo. The effect of TXA in patients who did not stop antiaggregate use before surgery warrants further study.