"Right Into the Center": A Semantic Analysis of Direction in Operating Room Instruction.

OBJECTIVE: In our previous work, teaching surgeons used potentially ambiguous language in the OR 12.3 times per minute. Our objectives were to examine ambiguous examples featuring Directional Frame of Reference (DFoR), which involves instructions containing directional terms like "up" or "left," and to uncover what contributes to understanding or misunderstanding of such instruction. DESIGN: We videorecorded the critical moments of 6 surgeries, as chosen by the surgeons. With a semanticist, we applied constructs from formal semantics to choose potentially ambiguous DFoR terms commonly flagged in our previous work. We separately interviewed attending and resident surgeons, asking each to describe the meaning of those DFoR terms while they viewed case recordings alongside transcripts. We compared their responses, analyzing them for agreement in direction. We performed thematic analysis on case and interview transcripts for themes related to DFoR. SETTING: Midwestern academic university teaching hospital. PARTICIPANTS: Six attending and 6 resident surgeons. RESULTS: Attending and resident surgeons disagreed on direction in 9 of the 26 (34.6%) DFoR examples. Misunderstanding arose from using linear direction to describe three-dimensional space, e.g., "up" for anterior/cephalad/right. It also arose when combining degree modifiers with DfoR, e.g., "we're far enough back" combines the ambiguities of "back" (DfoR) and "far enough" (degree modifier). Use of axial parts (noun-like directional terms), e.g., "bottom," and confusing "left" for "right" also provoked misunderstanding. Misunderstanding was associated with lack of experience and mitigated by pointing with a finger or instrument, concurrent with speech. CONCLUSIONS: Use of ambiguous language with DFoR incurs a high potential for misunderstanding, especially with novice surgeons. We recommend avoiding linear directions and axial parts, and instead physically pointing to represent complex 3D directions. Degree modifiers can be replaced with exact distances e.g., replace "little more anterior" with "1 centimeter anterior," and semaphores can be used to clarify direction.

Language in the Teaching Operating Room: Expressing Confidence Versus Community.

OBJECTIVE: Previous work has analyzed residency letters of recommendation for agentic and communal language, but this has not been applied to spoken language. Our objective was to analyze intraoperative spoken language by attending and resident surgeons for the use of agentic and communal language. DESIGN: We completed a linguistic inquiry and word count (LIWC) analysis on 16 operating room transcripts (total time 615 minutes) between attendings and resident surgeons for categories associated with agentic and communal speech. Wilcoxon signed rank and Mann-Whitney U tests were used to compare attending versus resident and male versus female speech patterns for word count; "I," clout, and power (agentic categories); and "we," authentic, social (communal categories). SETTING: Midwestern academic university teaching hospital. PARTICIPANTS: Sixteen male (9 attendings, 7 residents) and 16 female (7 attendings, 9 residents) surgeons, from 6 surgical specialties, most commonly from General Surgery. RESULTS: Attending surgeons used more words per minute than residents (40.01 vs 16.92, p < 0.01), were less likely to use "I" (3.18 vs 5.53, p < 0.01), and spoke more language of "clout" (75.82 vs 55.47, p < 0.01). There were no significant differences between attendings and residents in use of analytic speech (23.72 vs 24.67, p = 0.32), "causation" (1.20 vs 1.08, p = 0.72), or "cognitive processing" (10.20 vs 10.54, p = 0.74). Residents used more speech with "emotional tone" (92.91 vs 79.92, p = 0.03), "positive emotion" (4.98 vs 3.86, p = 0.04), more "assent" language (4.89 vs 3.09, p < 0.01), and more "informal" language (9.27 vs 6.77, p < 0.01). There were no gender differences, except for male residents speaking with greater certainty than female residents, although by less than 1% of the total word count. CONCLUSIONS: In the operating room, attending surgeons were more likely to use agentic language compared to resident surgeons based on LIWC analysis. These differences did not depend on gender and likely relate to surgeon experience and confidence, learning versus teaching, and power dynamics.

Speech Communication Interference in the Operating Room.

INTRODUCTION: Operating room communication is frequently disrupted, raising safety concerns. We used a Speech Interference Instrument to measure the frequency, impact, and causes of speech communication interference (SCI) events. METHODS: In this prospective study, we observed 40 surgeries, primarily general surgery, to measure the frequency of SCI, defined as "group discourse disrupted according to the participants, the goals, or the physical and situational context of the exchange." We performed supplemental observations, focused on conducting postsurgery interviews with SCI event participants to identify contextual factors. We thematically analyzed notes and interviews. RESULTS: The observed 103 SCI events in 40 surgeries (mean 2.58) mostly involved the attending (50.5%), circulating nurse (44.6%), resident (44.6%), or scrub tech (42.7%). The majority (82.1%) of SCI events occurred during another patient-related task. 17.5% occurred at a critical moment. 27.2% of SCI events were not acknowledged or repeated and the message was lost. Including the supplemental observations, 97.0% of SCI events caused a delay (mean 5 s). Inter-rater reliability, calculated by Gwet's AC1 was 0.87-0.98. Postsurgery interviews confirmed miscommunication and distractions. Attention was most commonly diverted by loud noises (e.g., suction), conversations, or multitasking (e.g., using the electronic health record). Successful strategies included repetition or deferment of the request until competing tasks were complete. CONCLUSIONS: Communication interference may have patient safety implications that arise from conflicts with other case-related tasks, machine noises, and other conversations. Reorganization of workflow, tasks, and communication behaviors could reduce miscommunication and improve surgical safety and efficiency.

Hemoglobin A1c and Reoperation After Surgery for Stress Incontinence or Prolapse.

IMPORTANCE: Few studies compare the link between hemogobin A1c (HbA1c) and urogynecologic surgical complications. OBJECTIVE: The objective of this study was to determine the association between HbA1c and reoperation in women undergoing surgery for stress urinary incontinence (SUI) or pelvic organ prolapse (POP). STUDY DESIGN: We performed 2 separate retrospective cohort analyses using Cerner's HealthFacts Database (750 hospitals; 519,000,000 patient encounters from January 1, 2010, to November 30, 2018). We included women undergoing surgery for (1) SUI or (2) apical POP by International Classification of Diseases coding who had HbA1c at the initial procedure. Each analysis compared those undergoing reoperation for complications or recurrence and those who did not. Multivariable logistic regression assessed the association between reoperation and HbA1c both as a continuous variable and comparing the commonly accepted cutoff ≥8. RESULTS: Of 30,180 SUI surgical procedures and 26,389 POP surgical procedures, 1,625 (5.4%) and 805 (3.1%) had HbA1c. Median (interquartile range) HbA1c in grams per deciliter was similar by reoperation status (SUI: 6.0 [5.6-6.8] vs 6.1 [5.6-6.9], P = 0.35; POP: 6.2 [5.6-6.6] vs 6.1 [5.7-6.8], P = 0.60). Reoperation was also similar using the HbA1c ≥8% cutoff (SUI: 6.9% vs 7.4%, P = 0.79; POP: 6.3% vs 5.4%, P = 0.77). On multivariate analysis, HbA1c value was not a significant predictor of reoperation either as a continuous (SUI: odds ratio [OR] = 0.966, 95% CI = 0.833-1.119; POP: OR = 1.040, 95% CI = 0.801-1.350) or dichotomous variable ≥8 (SUI: OR = 0.767, 95% CI = 0.407-1.446; POP: OR = 0.988, 95% CI = 0.331-2.951). Mean follow-up was 4.28-5.13 years. CONCLUSION: Although other studies have shown a link between diabetes and complications, we were unable to show an association between HbA1c values and rates of reoperation.

Cognitive models for mentally visualizing a sharp instrument in a blind procedure.

Purpose: Our objective was to understand the cognitive strategies used by surgeons to mentally visualize navigation of a surgical instrument through blind space. Methods: We conducted semi-structured interviews with 15 expert and novice surgeons following simulated retropubic trocar passage on 3D-printed models of pelvises segmented from preop MRIs. Midurethral sling surgery involves blind passage of a trocar among the urethra, bladder, iliac vessels, and bowel while relying primarily on haptic feedback from the suprapubic bone (SPB) for guidance. Our conceptual foundation was based on Lahav's study on blind people's mental mapping of spaces using haptic cues. Participants detailed how they mentally pictured the trocar's location relative to vital anatomy. We coded all responses and used constant comparative analysis to generate themes, confirmed with member checking. Results: Expert and novice participants utilized multiple cognitive strategies combined with haptic feedback to accomplish safe trocar passage. Some used a step-by-step route strategy, visualizing sequential 2D axial images of anatomy adjacent to the SPB. Others used a map strategy, forming global 3D pictures. Although these mental pictures vanished when they were "lost," a safe zone could be reestablished by touching the SPB. Experts were more likely to relate their body position to the trocar path and rely on minor variations in resistance. Novices were more inclined toward backtracking of the trocar. Conclusions: Our findings may be extended to any blind surgical procedure. Teaching visualization strategies and incorporating tactile feedback can be used intraoperatively to help learners navigate their instrument safely around vital organs.

Surgeon estimation of retropubic trocar position in blind 3D space.

INTRODUCTION AND HYPOTHESIS: Retropubic midurethral sling surgery involves the blind passage of trocars near vital organs. We quantified the proximity of surgeons' mental representation of trocar position relative to actual position using a pelvis simulation platform. We hypothesized that novice surgeons, compared with experts, would estimate the trocar's location to be further from the actual location. METHODS: Novice and expert surgeons performed bilateral retropubic trocar passes of a Gynecare TVT trocar (#810041B-#810,051) on the simulation platform. We measured the trocar tip's position using a motion capture system, and recorded vocalizations when they perceived contacting the bone and crossing three landmark-oriented planes. We calculated differences (∆Bone, ∆Turn, ∆Top, ∆Pop) between vocalization times and when the trocar crossed the corresponding plane. We performed Mann-Whitney and Chi-squared tests to investigate differences between novices and experts and Levene's test to assess equality of variances for subject-level variation. RESULTS: A total of 34 trials, including 22 expert and 12 novice trials, were performed by six participants. ∆Bone was significantly smaller among novice surgeons (1.27 vs 2.81 s, p=0.013). There were no significant differences in the remaining three deltas or in vocalizing early versus late. Levene's test revealed no significant differences in within-subject variability for any of the four deltas. Novices passed the trocar anterior to the pubic bone on three passes. CONCLUSIONS: Novices were similar to expert surgeons in their estimation of the trocar's location and may have relied more heavily on anticipatory mechanisms to compensate for lack of experience. Teaching surgeons should make sure the novice surgeon trocar pass starts posterior to the bone.

The Impact of Facial Personal Protective Equipment on Speech Intensity.

IMPORTANCE: Facial personal protective equipment (FPPE) filters small particles in the operating room (OR) but also affects speech production, diminishing the effective transfer of information among OR team members. OBJECTIVE: The aim of the study is to assess the attenuating effects of different combinations of layered FPPE on speech intensity, including potential differences in the effect of talkers with varying backgrounds and speaking volumes. STUDY DESIGN: We recruited 30 speakers from health and nonhealth occupations with English as either their first or second language. All participants spoke unmasked, at varying voice levels into a portable Zoom H4n device 12 inches from the microphone. These no-mask recordings were played from a Styrofoam head, fitted with 7 combinations of FPPE commonly worn in the COVID-19 era, with the attenuated signals assessed for digital average signal levels. We submitted these attenuation values to an omnibus mixed analysis of variance and performed a spectral analysis on signal attenuation stratified by typical speech frequency bands. RESULTS: Signal attenuation was strongly determined by FPPE combination, regardless of talker sex, first language, and occupation ( P < 0.01, η 2p = 0.881). The effects of vocal output were also significant ( P < 0.01, η 2p = 0.881). Soft talkers experienced particularly high attenuation at frequency bands higher than 2,000 Hz. The signal of the softest talkers, when asked to speak loudly, was similar to the loud talkers' signal. CONCLUSIONS: Layered FPPE in the OR protects the surgical team from small particle exposure but may increase communication failures. Our data can help OR staff choose FPPE and alter their vocal volume accordingly.

Retropubic trocar modified with a load cell to verify contact with pubic bone.

BACKGROUND: Vital injuries during midurethral sling surgery are avoided by maintaining constant trocar contact with bone, and yet this is challenging for a teaching surgeon to monitor during this blind procedure. We modified a retropubic trocar with a load cell to distinguish on-bone and off-bone movement and tested it on a midurethral sling surgery 3-dimensional surgery simulator. METHODS: Two experts and 3 novice surgeons performed retropubic trocar passage on the physical pelvic floor model using the modified trocar. Biofidelity was assessed comparing expert performance on a Thiel-embalmed cadaver and the physical model. The test-retest was assessed comparing performance on the physical pelvic model 2 weeks apart. The force variables were analyzed with paired and independent t tests. We performed post hoc analyses comparing the experts to novices on the physical model. RESULTS: The root-mean-squared force was similar between the cadaver and model (24.3 vs 21.1 pounds, P = .62), suggesting biofidelity. Root-mean-squared force was also similar between the test and retest (14.0 vs 19.1 pounds, P =. 30). The expert surgeons exhibited a larger maximum force amplitude (51.2 vs 22.7 pounds, P = .03), shorter time to maximum force (2.7 vs 9.5 seconds, P = .03) and larger maximum rate of force development (171.5 vs 54.0 pounds/second, P = .01). CONCLUSION: This study suggested high test-retest reliability and adequate biofidelity of the modified trocar used on our midurethral sling surgery 3-dimensional surgery simulator. This innovative trocar can be used both in simulation and in the operating room to help the novice surgeons stay on the bone and to help the attending surgeon monitor safe surgery.