Unconscious bias in speaker introductions at a national vascular surgery meeting: The impact of rank, race and gender

OBJECTIVES

Unconscious bias can impact manner of speaker introductions in formal academic settings. We examined speaker introductions at the Society of Vascular Surgeons Annual Meeting to determine factors associated with non-professional address.

METHODS

We examined speaker introductions from the 2019 SVS Vascular Annual Meeting. Professional title with either full name or last name was considered professional address. Speaker and moderator demographics were collected. Univariate and multivariate logistic regression analyses were performed to identify associations between introduction and speaker and moderator characteristics.

RESULTS

336 talks met inclusion criteria. Both speakers and moderators were more likely to be white (63.4 ​% and 65.8 ​%,p ​= ​0.92), man (75.6 ​% and 74.4 ​%,p ​= ​0.82) and full professor rank (34.5 ​% and 42.3 ​%, p ​< ​0.001). On multivariable regression, non-professional address was associated with speaker rank of trainee (OR 3.13, p ​= ​0.05) and when moderator was white (OR 2.42, p ​= ​0.03).

CONCLUSIONS

This study emphasizes the potential negative impact of unconscious bias at a national meeting for vascular surgeons and the need to mitigate this effect at the organization level.

Contemporary management of carotid body tumors in a Midwestern academic center

BACKGROUND

Carotid body tumors are rare, neurogenic tumors arising from the periadventitial chemoreceptive tissue of the carotid body. The purpose of this study is to ascertain the presentation and preoperative risk factors associated with surgical resection.

METHODS

A single-center retrospective review of 25 carotid body tumor resections from 2002 to 2019. Demographics, periprocedural details, and postoperative outcomes were analyzed using Stata (Stata Corporation, College Station, TX).

RESULTS

Among 25 patients, 64% were women, 84% were asymptomatic, and the mean age was 49 years (range 21-79). Forty-four percent of tumors were Shamblin III. Nine patients underwent preoperative embolization but did not correlate with decreased blood loss (299 cm³ vs 205 cm³, P = .35). The 30-day death, stroke, and cranial nerve injury rates were 0%, 8%, and 32%, respectively. Cranial nerve injuries included 20% vagus, 4% hypoglossal, 4% facial, and 4% glossopharyngeal, with permanent deficits in 4% (n = 1). Mean length of stay was 3.0 days (range 1-9 days). At a mean follow-up of 12 months (range 1-63 months), there has been no recurrence.

CONCLUSION

Although carotid body tumors are uncommon in the Midwest, complete surgical resection is curative of these typically hormonally inactive tumors. Preoperative embolization did not affect blood loss, and the incidence of death, stroke, and permanent cranial nerve injury rates remained very low.

Peripheral artery reconstructions using cryopreserved arterial allografts in infected fields

OBJECTIVE

Cryopreserved human arterial allografts are a recognized acceptable alternative for vascular reconstruction when other traditional conduits are either unavailable or contraindicated. We reviewed our experience using cryopreserved arterial allografts for peripheral artery reconstructions in contaminated and infected surgical fields.

METHODS

A single-center, retrospective review was conducted of 57 patients who underwent a peripheral vascular reconstruction using a cryopreserved arterial allograft from January 2002 through July 2017. Indications for repair included removal of infected prosthetic bypass (n = 29), revascularizations in contaminated fields (n = 11), primary arterial repair in the setting of infection (n = 10), and infected vascular closure devices (n = 7). Aorta-based repairs were excluded. Demographics, index procedural details, postoperative complications, and conduit patency were analyzed. Primary end points included conduit-related mortality and graft failure as measured by reinfection, hemorrhage, or aneurysmal degeneration. Mean follow-up for the study is 27.8 months (range, 2-125 months).

RESULTS

A total of 57 peripheral vascular reconstructions using cryopreserved arterial allografts were performed during the 15-year period. Among the 22 women and 35 men treated, the mean age was 61 years. The vascular beds involved included iliofemoral (n = 39), femoropopliteal or femoral-distal (n = 10), axillosubclavian or brachial (n = 2), mesenteric (n = 3), and carotid (n = 3) arteries. Adjunctive muscle flap coverage of the allograft conduit was performed in the majority of cases (61%; n = 35). The 30-day mortality was 9%; one death was directly related to conduit insertion. The 30-day conduit-related complication rate was 14% and included hemorrhage from the graft requiring return to the operating room (n = 4) and graft infection (n = 4). The late conduit-related complication rate was 15.8% and included graft infection (n = 1), graft thrombosis (n = 3), major amputation resulting from conduit failure (n = 1), pseudoaneurysm degeneration requiring repair (n = 2), graft hemorrhage (n = 1), and symptomatic graft stenosis (n = 1).

CONCLUSIONS

A cryopreserved arterial allograft is a useful alternative conduit for peripheral vascular reconstruction in infected or contaminated surgical fields when other autologous or prosthetic conduits are either unavailable or contraindicated. In the immediate postoperative period, these repairs demonstrate acceptable resistance to graft failure and reinfection, particularly in conjunction with adjunctive rotational muscle flap coverage. Late conduit-related complications appear to be infrequent.

Adjunctive technique for the use of ProGlide vascular closure device to improve hemostasis

The Perclose ProGlide (Abbott Vascular, Santa Clara, Calif) is indicated for the closure of 5F to 21 F femoral artery access sites. We describe an adjunctive technique for the use of the ProGlide vascular closure device to improve hemostasis. After routine use of the device, a hollow tube (cut from the injection port of an introducer sheath) is placed over the free tails of suture. These tubes are secured in place by a hemostat that grasps the free suture tails, creating a Rummel-style tourniquet that compresses the arteriotomy, improving hemostasis. The tubes doubly serve as a conduit for the administration of prothrombotic agents directly in the event that hemostasis is not adequately achieved.