Évaluation de la courbe d’apprentissage des extractions par spatules de Thierry

[Spatulas: A Franco-Colombian story or the slow rise of propulsion...]

The idea of using an instrument to assist natural childbirth is not new and it was in the 18th and 19th centuries that the forceps was developed. It is only after the Second World War that the suction cup provides an alternative to instrumental childbirth, but still based on prehension and traction. In 1950, Emile Thierry, in France, presented his spatulas based on the then original principle of propulsion. The diffusion of spatulas is almost non-existent in the Anglo-Saxon world but is not limited to France since its use was real by the Iberians and Latin Americans. There are currently three types of spatula, two of which are French and one Colombian. This review takes up the saga of this instrument for more than 70 years, develops its particularities and describes the present literature.

Evaluation of Suzor forceps training by studying obstetric anal sphincter injuries: a retrospective study

BACKGROUND

Instrumental deliveries are an unavoidable part of obstetric practice. Dedicated training is needed for each instrument. To identify when a trainee resident can be entrusted with instrumental deliveries by Suzor forceps by studying obstetric anal sphincter injuries.

METHODS

A French retrospective observational study of obstetric anal sphincter injuries due to Suzor forceps deliveries performed by trainee residents was conducted from November 2008 to November 2016 at Limoges University Hospital. Perineal lesion risk factors were studied. Sequential use of a vacuum extractor and then forceps was also analyzed.

RESULTS

Twenty-one residents performed 1530 instrumental deliveries, which included 1164 (76.1%) using forceps and 89 (5.8%) with sequential use of a vacuum extractor and then forceps. Third and fourth degree perineal tears were diagnosed in 82 patients (6.5%). Residents caused fewer obstetric anal sphincter injuries after 23.82 (+/- 0.8) deliveries by forceps (p = 0.0041), or after 2.36 (+/- 0.7) semesters of obstetrical experience (p = 0.0007). No obese patient (body mass index> 30) presented obstetric anal sphincter injuries (p = 0.0013). There were significantly fewer obstetric anal sphincter injuries after performance of episiotomy (p <  0.0001), and more lesions in the case of the occipito-sacral position (p = 0.028). Analysis of sequential instrumentation did not find any additional associated risk.

CONCLUSION

Training in the use of Suzor forceps requires extended mentoring in order to reduce obstetric anal sphincter injuries. A stable level of competence was found after the execution of at least 24 forceps deliveries or after 3 semesters (18 months) of obstetrical experience.

Objective assessment of obstetrics residents' surgical skills in caesarean: Development and evaluation of a specific rating scale

OBJECTIVE

To develop a modified version of Objective Structured Assessment of Technical Skill (OSATS) rating scale for evaluation of surgical skills specific to caesarean and to assess its relevance in documenting the residents' learning curve during their training. Secondarily, to verify the scale's stability to caesarean's level of difficulty and comparing self-assessment to hetero-assessment in order to propose a practical application of this rating scale during residency.

STUDY DESIGN

We conducted a multicentre observational prospective study, from May 2018 to November 2018. All residents at that time could participate and fill in the rating scale after caesarean. Senior surgeons had to fill in the same rating scale. We analysed correlation between self-assessments and hetero-assessments and sensitivity to change of the rating scale. Analysis of feature's relevance was performed by principal component analysis, factor analysis and reliability analysis.

RESULTS

In total, 234 rating scales were completed evaluating 18 residents. Our study demonstrated that our rating scale could be used to evaluate surgical skills of residents during caesarean and distinguish their year of residency (p < 0.001) with a high correlation between self and hetero-assessment (Intraclass Correlation coefficient for global score: 0.78; 95% CI 0.68-0.86). The principal component analysis revealed two dimensions corresponding to the two parts of the rating scale and the factorial analysis allowed us to confirm distribution of features according to these two dimensions. Cronbach's alpha allowed us to highlight the percentage of representation of the scale's features in relation to all potential theoretical features (0.93, 95% CI 0.82-0.95).

CONCLUSION

Our rating scale could be used for self-assessment during residency and as a hetero-assessment tool for validating defined stages of the internship.

[French residents' training in instrumental deliveries: A national survey]

OBJECTIVES

To evaluate French residents in Obstetrics and Gynaecology's training in instrumental deliveries in 2015.

PATIENTS AND METHODS

We conducted a national descriptive survey among 758 residents between December 2014 and January 2015. Respondents were invited by email to specify their University Hospital, their current university term, the number of instrumental deliveries performed by vacuum extractor, forceps or spatulas, and whether they made systematic ultrasound exams before performing the extraction.

RESULTS

Response rate was 34.7 % (n=263). There were important differences between regions in terms of type of instruments used. Vacuum extractor was the most commonly used instrument for instrumental deliveries by French residents (56.9 %), more than forceps (25.2 %) and spatulas (17.9 %). At the end of the residency, all the residents had been trained in instrumental deliveries with at least two instruments.

CONCLUSION

The training of difficult techniques as well as their perfect control is required for instrumental deliveries. Yet, we are forced to note that there are substantial differences in the French residents' training in instrumental deliveries depending on their region. So, teaching at least two techniques seems essential as well as improving the training capacities and standardizing practices. A greater systematization of the teaching of the mechanics and obstetric techniques might be a solution to be considered too.