[Intraoperative stress in orthopaedic spine surgery : Attending surgeon versus resident]

Energy Consumption and Substrate Utilization During Spinal Surgery

INTRODUCTION

This study aims to measure surgeon physiologic stress and energy expenditure during adult spine surgery. Energy expenditures were assessed based on patient BMI, lead use, instrumentation/intraoperative navigation, primary/revision surgeries, tranexamic acid (TXA) use, and anatomic region involved.

METHODS

The senior author wore a heart rate (HR) monitor and triaxial accelerometer during spinal surgeries, providing assessments of mean HR, maximum HR, calories consumed/minute, and calories as measured by a Polar device (P calories) and Fitbit device (F calories).

RESULTS

One hundred sixty-two surgeries were included. Median patient age was 62 years. Median BMI was 29.02. Significant differences existed for BMI and estimated blood loss (P < 0.05). TXA use had a significant effect on case time, estimated blood loss, P calories, F calories, and Kcal/min (P < 0.05). Instrumentation use was significant for all variables (P < 0.05), except for mean HR and Kcal/min (P > 0.05). Lead use did not have a significant effect on max HR, P calories, F calories, and Kcal/min (P > 0.05). Navigation use was associated with significant differences for every variable tested (P ≤ 0.05). Differences were observed between primary and revision surgeries for case time, estimated blood loss, and F calories (P < 0.05).

CONCLUSIONS

In spinal surgery, the use of navigation, instrumentation use, TXA use, and performing revision surgeries were associated with increased energy expenditure and can potentially increase surgeon fatigue.

Advanced undergraduate medical students' perceptions of basic medical competences and specific competences for different medical specialties - a qualitative study

BACKGROUND

Medical graduates should have acquired basic competences that enable them to practice medicine independently as physicians and to enter postgraduate training in any specialty they wish. Little is known about advanced undergraduate medical students' perceptions of basic medical competences needed to start postgraduate training and about specialty-specific competences. This qualitative study aims to identify medical students' perceptions of basic medical competences and specific competence requirements for different specialties.

METHODS

In December 2020, sixty-four advanced undergraduate medical students participated in the role of a resident in a competence-based telemedicine training simulating a first day in postgraduate training. After the training, eight focus group interviews were conducted about students' perceptions of basic medical competences and specialty-specific competences using a semi-structured interview guide. The interviews were transcribed and analysed thematically according to the six steps of Braun and Clarke. The analysis was carried out by an inductive search for themes, which were deductively assigned to the six competence areas of the requirement-tracking questionnaire (R-Track).

RESULTS

Regarding basic medical competences, four R-Track competence areas could be identified as main themes. The students considered 'Social-interactive competences' to be particularly relevant for basic clinical work, including 'Structuring information', 'Tactfulness', and 'Stress resistance'. Students especially emphasized 'Concentration' as an important aspect of the competence area 'Mental abilities'. Among 'Personality traits', 'Honesty' was mentioned most frequently, and students were also aware that 'Expertise' is particularly important for 'Motivation'. For different specialties, some competence areas were newly added to the competences needed for the respective specialty. For surgery, the competence areas 'Sensory abilities' and 'Psychomotor & multitasking abilities' were mentioned anew. 'Sensory abilities' were also newly attributed to radiology. 'Mental abilities' were mentioned as new competence area for psychiatry and internal medicine, while for anaesthesiology, 'Psychomotor & multitasking abilities' were newly added.

CONCLUSIONS

Advanced students seem to be well aware of basic competences needed for clinical practice. Good consensus between students and physicians was only found for psychiatry-specific competences. Medical schools should support their students in matching their perceptions of competences needed for specific specialties with specialty-specific requirements for a realistic choice of a specialty for postgraduate training.

Stress Management in Pre- and Postoperative Care Amongst Practitioners and Patients in Cardiac Catheterization Laboratory: A Study Protocol

Background

As the number of cardiac diseases continuously increases within the last years in modern society, so does cardiac treatment, especially cardiac catheterization. The procedure of a cardiac catheterization is challenging for both patients and practitioners. Several potential stressors of psychological or physical nature can occur during the procedure. The objective of the study is to develop and implement a stress management intervention for both practitioners and patients that aims to reduce the psychological and physical strain of a cardiac catheterization.

Methods

The clinical study (DRKS00026624) includes two randomized controlled intervention trials with parallel groups, for patients with elective cardiac catheterization and practitioners at the catheterization lab, in two clinic sites of the Ernst-von-Bergmann clinic network in Brandenburg, Germany. Both groups received different interventions for stress management. The intervention for patients comprises a psychoeducational video with different stress management technics and additional a standardized medical information about the cardiac catheterization examination. The control condition includes the in hospitals practiced medical patient education before the examination (usual care). Primary and secondary outcomes are measured by physiological parameters and validated questionnaires, the day before (M1) and after (M2) the cardiac catheterization and at a postal follow-up 6 months later (M3). It is expected that people with standardized information and psychoeducation show reduced complications during cardiac catheterization procedures, better pre- and post-operative wellbeing, regeneration, mood and lower stress levels over time. The intervention for practitioners includes a Mindfulness-based stress reduction program (MBSR) over 8 weeks supervised by an experienced MBSR practitioner directly at the clinic site and an operative guideline. It is expected that practitioners with intervention show improved perceived and chronic stress, occupational health, physical and mental function, higher effort-reward balance, regeneration and quality of life. Primary and secondary outcomes are measured by physiological parameters (heart rate variability, saliva cortisol) and validated questionnaires and will be assessed before (M1) and after (M2) the MBSR intervention and at a postal follow-up 6 months later (M3). Physiological biomarkers in practitioners will be assessed before (M1) and after intervention (M2) on two work days and a two days off. Intervention effects in both groups (practitioners and patients) will be evaluated separately using multivariate variance analysis.

Discussion

This study evaluates the effectiveness of two stress management intervention programs for patients and practitioners within cardiac catheter laboratory. Study will disclose strains during a cardiac catheterization affecting both patients and practitioners. For practitioners it may contribute to improved working conditions and occupational safety, preservation of earning capacity, avoidance of participation restrictions and loss of performance. In both groups less anxiety, stress and complications before and during the procedures can be expected. The study may add knowledge how to eliminate stressful exposures and to contribute to more (psychological) security, less output losses and exhaustion during work. The evolved stress management guidelines, training manuals and the standardized patient education should be transferred into clinical routines.

[Teamwork and stress in routine interventions: an observational study of multiprofessional OR teams]

Hintergrund

Effektive interprofessionelle Teamarbeit im Operationssaal (OP) und intraoperativer Stress sind von großer Bedeutung für Patientensicherheit und Versorgungsqualität. Dennoch gibt es nur wenige systematische Studien zum Zusammenhang von Teamarbeit im OP und Arbeitsstress.

Ziele der Arbeit

Untersuchung des Zusammenhangs von Teamarbeit und empfundenem Stress bei Routineeingriffen – für das OP-Team als Gesamtheit sowie für die einzelnen Professionen Chirurgie, Anästhesie und Pflege.

Material und Methoden

Durchgeführt wurde eine Mehrmethodenstudie bestehend aus Expertenbeobachtungen mittels eines standardisierten Beobachtungsinstruments (OTAS-D) und systematischer Selbstberichte des gesamten OP-Teams. Erfasst wurden 64 elektive Routineeingriffe unterschiedlicher chirurgischer Fachbereiche. Die statistischen Zusammenhangsanalysen unter Kontrolle prozeduraler Einflussfaktoren wurden mit „Mixed-effects“-Regressionsmodellen berechnet.

Ergebnisse

Die Güte der intraoperativen Teamarbeit lag auf mittlerem Niveau. Der situative Stress während des Eingriffs wurde durch die Befragten eher auf niedrigerem Niveau berichtet, mit signifikanten Unterschieden zwischen den Professionen Chirurgie, Pflege und Anästhesie. Mitglieder des chirurgischen Teams berichteten im Durchschnitt die höchsten Stressniveaus. Ein genereller Zusammenhang zwischen Teamarbeit und Stresserleben konnte nicht beobachtet werden, allerdings für die einzelnen Professionen: Für das chirurgische Team ergaben sich signifikante, positive Zusammenhänge, sowie für die Teamarbeitsdimensionen Zusammenarbeit und Führung. Signifikante negative Zusammenhänge ergaben sich für das Pflegeteam hinsichtlich der Qualität der interdisziplinären Teamarbeit insgesamt sowie für die Teamarbeitsdimension Team-Monitoring.

Diskussion

Die Effekte interprofessioneller Zusammenarbeit im OP auf subjektives Stressempfinden bei Routineeingriffen hängen von Professionszugehörigkeit, Aufgabe und Tätigkeit ab. Weitere Forschungsarbeit ist notwendig, inwiefern gute Teamarbeit bei Routineeingriffen innerhalb und über die Professionen hinweg intraoperativen Stress beeinflusst.

Zusatzmaterial online

Die Online-Version dieses Beitrags (10.1007/s00113-021-00977-w) enthält eine vollständige Liste mit Kurzbeschreibungen der beobachteten Eingriffe. Beitrag und Zusatzmaterial stehen Ihnen auf www.springermedizin.de/link/10.1007/s00113-021-00977-w zur Verfügung.

Surgeon Energy Expenditure and Substrate Utilization During Simulated Spine Surgery

INTRODUCTION

Orthopaedic surgery can be a physically demanding occupation with high rates of fatigue and burnout. Fatigue has been shown to affect surgeon performance with higher rates of errors in fatigued surgeons. The metabolic cost of performing surgery has yet to be quantified. A better understanding of these costs may provide insights into surgeon fatigue and its effect on patient safety.

METHODS

Eight subjects performed a one-level lumbar laminectomy and fusion on cadavers. Oxygen consumption (VO2) was measured via indirect calorimetry and used to calculate energy expenditure (EE). Substrate utilization was estimated from measurements of inspired and expired gases (ie, O2 and CO2, respectively). EE was also measured with the use of triaxial accelerometers.

RESULTS

The peak VO2 was 11.3 ± 0.4 mL/kg/min. The EEtotal was 132 ± 6 kcal corresponding to the EEtotal/hr of 142 ± 7 kcal/hr. Upper arm accelerometers (154.8 ± 9.8 kcal; r = 0.54) accurately estimated total EE. Subjects used, on average, 53% ± 4% CHO versus 47% ± 7% fat, with peak utilization of 65% ± 5% CHO versus 35% ± 15% fat.

DISCUSSION

Simulated orthopaedic spine surgery elicited modest but significant increases in EE over resting. Surgeons used a higher percentage of carbohydrate than would be expected for the intensity of the activity.