Dutoit, Andrea P.

BACKGROUND: Increased specialty competitiveness, alongside the inception of virtual interviews, has increased the number of applications submitted to the Electronic Residency Application Service (ERAS) in anesthesiology. ERAS introduced signals to provide applicants with a means to demonstrate interest in a select group of residency programs. In the 2023 to 2024 application cycle, anesthesiology applicants had the opportunity to send 5 gold and 10 silver signals in a tiered system. METHODS: This multicenter, cross-sectional (exempt) research survey was created by members of the executive council of the Association of Anesthesiology Core Program Directors (AACPD) and housed and distributed through REDCap and the University of Nebraska Medical Center. Publicly available contact information of anesthesiology core program directors was obtained from the Accreditation Council for Graduate Medical Education (ACGME) website and membership roster of the AACPD. In total, 174 anesthesiology programs were identified. A survey invitation was distributed on March 12, 2024, to all programs via e-mail with reminders. The survey closed on April 30, 2024. Survey responses were collected anonymously, with instructions to provide 1 response per program. All statistical summaries and analyses were performed using SAS 9.3 (SAS Institute). RESULTS: The survey was sent to all 174 identified programs, with a response rate of 48.9%. Small programs were defined as having <44 residents, medium 44 to 62 residents, and large >62 residents. Small programs received significantly fewer applications (median 1255) than medium (1420) and large (1558) programs ( P = .0005). There was a statistically significant difference in the number of gold signals received based on program size, with large programs receiving significantly more than medium (169 vs 116, P = .0238) or small programs (168 vs 71, P < .0001). Applicants sending gold signals were more likely to receive an interview compared to those who sent silver signals (56.7% vs 31%, P ≤ .0001). Of the those interviewed, applicants who sent gold signals comprised 42% (28.7%–52.6%), whereas applicants who sent silver signals comprised 45.5% (33%–54.7%). Applicants who did not send a program signal but signaled geographically made up a smaller portion of the interview group at 3% (0%–15.4%). The percentage of matched residents sending gold signals made up 66.7% (47.1%–82.4%) of a program’s match list, whereas those sending silver signals were 25% (11.1%–33.3%) of the matched cohort. CONCLUSIONS: Anesthesiology applicants who sent program signals were selected for a large majority of available interview positions, and interviewed applicants who submitted gold and silver signals comprised the vast majority of matched resident cohorts.

The purpose of this study was to evaluate the relationship between the cardiac and sympathetic baroreflex sensitivities within healthy, young individuals. The gains in cardiac (as measured by changes in R‐R interval, RRI, and heart rate, HR) and sympathetic (as measured by changes in muscle sympathetic nerve activity, MSNA) baroreflex during rapid changes in arterial blood pressure were compared in 27 normotensive individuals (18 men and 9 women; age 24 yrs ±1.24; body mass index 24 ±0.51 cm/kg 2 , mean ±SEM). Heart rate, arterial blood pressure (brachial artery catheter), and peroneal MSNA were recorded under resting conditions (HR 58 ±1.6 bpm; SBP 124 ±2.7 mmHg; DBP 71 ±1.7 mmHg; MAP 87 ±1.7 mmHg; MSNA BF 17 ±1.6 bursts/min) as well as during rapid changes in arterial blood pressure induced by sequential boluses of nitroprusside and phenylephrine (Modified Oxford technique). Integrated baroreflex sensitivities for MSNA and HR were analyzed using the slopes of the linear portions of the MSNA‐diastolic blood pressure and RRI‐systolic blood pressure relationships, respectively. When individual cardiac baroreflex sensitivity was compared to sympathetic baroreflex sensitivity, no correlation (R 2 =0.0003) was found. These results indicate that although both cardiac and sympathetic efferents function in baroreflex control of the autonomic system, there does not appear to be a direct correlation in their function within healthy normotensive individuals. Research Support: NIH HL083947 and Swedish Medical Council grant 12170

The purpose of this study was to evaluate the relationship between the cardiac and sympathetic baroreflex sensitivities within healthy, young humans. The sensitivities of the cardiac and sympathetic baroreflexes were compared in 53 normotensive individuals (28 men and 25 women; age: 24.0±0.9 years; body mass index: 24.0±0.3 cm/kg 2 , mean±SEM). Heart rate, arterial blood pressure, and peroneal muscle sympathetic nerve activity were recorded under resting conditions (heart rate: 58±1 bpm; systolic blood pressure: 126±2 mm Hg; diastolic blood pressure: 72±1 mm Hg; mean arterial blood pressure: 89±1 mm Hg; muscle sympathetic nerve activity: 18±1 bursts per min) and during rapid changes in blood pressure induced by sequential boluses of nitroprusside and phenylephrine. Cardiac and sympathetic baroreflex sensitivities were analyzed using the slopes of the linear portions of the muscle sympathetic nerve activity-diastolic blood pressure and R-R interval-systolic blood pressure relationships, respectively. When individual cardiac baroreflex sensitivity was compared with sympathetic baroreflex sensitivity, no correlation (R-R interval: r =−0.13; heart rate: r =0.21) was observed when studied as a group. Analysis by sex unveiled a correlation in women between the cardiac and sympathetic baroreflex sensitivities (R-R interval: r =−0.54; P =0.01; no correlation with hazard ratio: r =0.29). No relationship was found in men (R-R interval: r =0.17; heart rate: r =0.12). These results indicate that, although both cardiac and sympathetic efferents function in baroreflex control of arterial pressure, there is no correlation in their sensitivities within healthy normotensive humans. However, sex-stratified data indicate that sex-based differential correlations might exist.