Effect of Short Training on Vaginal Fluid Microscopy
(Wet Mount) Learning
Gilbert G.G. Donders, MD, PhD,
1,2,3
Camila Marconi, MSc,
1,4
Gert Bellen, RN,
1
Francesca Donders, MS,
2
and Thirsa Michiels, MS
2
Objective: Is it feasible to learn the basics of wet mount microscopy of
vaginal fluid in 10 hours?
Materials and Methods: This is a pilot project wherein 6 students
with different grades of education were invited for being tested on their
ability to read wet mount microscopic slides before and after 10 hours of
hands-on training. Microscopy was performed according to a standard
protocol (Femicare, Tienen, Belgium). Before and after training, all
students had to evaluate a different set of 50 digital slides. Different
diagnoses and microscopic patterns had to be scored. J indices were
calculated compared with the expert reading.
Results: All readers improved their mean scores significantly, espe-
cially for the most important types of altered flora (p G .0001). The mean
increase in reading concordance (J from 0.64 to 0.75) of 1 student with
a solid previous experience with microscopy did not reach statistical
significance, but the remaining 5 students all improved their scores from
poor performance (all J G 0.20) to moderate (J = 0.53, n = 1) to good
(J 9 0.61, n = 4) concordance. Reading quality improved and reached
fair to good concordance on all microscopic items studied, except for the
detection of parabasal cells and cytolytic flora.
Conclusions: Although further improvement is still possible, a short
training course of 10 hours enables vast improvement on wet mount
microscopy accuracy and results in fair to good concordance of the most
important variables of the vaginal flora compared to a reference reader.
Key Words: phase contrast microscopy, lactobacillary grades, bacterial
vaginosis, aerobic vaginitis, vulvovaginal candidiasis
(J Lower Gen Tract Dis 2015;19: 165Y169)
T
he diagnosis of vaginal infections is quite cumbersome in
many medical practices. Often doctors feel annoyed by pa-
tients presenting with vulvovaginal complaints, either because
they do not feel keen or sufficiently skilled to examine them
properly or because of disappointment if the resolution of the
condition is still remote despite several trial-and-error treat-
ments and recurrences. Even physicians performing proper
examinations in an effort to solve these problems may get
frustrated because they have to rely on specimens sent to an
external laboratory for Gram stain or cultures, necessitating
them to start empiric therapies without proper diagnosis. Also,
the need to call in the patient again for further treatment ad-
justments, and, most important of all, the high likelihood that
the results obtained (e.g., a positive culture for enterococci or
Escherichia coli) will not contribute much to the therapy that
needs to be installed are posing severe constraints on the effi-
cient management of these frequent diseases.
It was shown that phase-contrast microscopy examination
shows optimal accuracy and interobserver agreement rates [1],
and a great variety of different abnormalities and flora patterns
can be discerned in a much superior way than when pH or an-
other point-of-care test were used [2Y11].
Still, fresh vaginal fluid microscopy is not a very popular
test in most practices, mainly because of the vague idea that the
examination will be time consuming, insufficiently enumerated,
or may be too difficult to master. To our knowledge, no one has
ever studied the learning curve of fresh vaginal fluid micros-
copy before. Therefore, we tested the ability of students with
different levels of knowledge, education, and experience to
perform microscopy in a standardized manner and studied the
influence of a short intense education on their performance.
The purpose of this pilot study was to evaluate the efficacy
of 10 hours of guided bedside training on the quality of fresh
wet mount phase-contrast microscopy to diagnose different
subtypes of microbial abnormalities of the vagina by inexperi-
enced medical students.
METHODS
Proposed Strategy of Training
From September 2009 to February 2010, 6 candidates
without previous knowledge of wet mount microscopy were
asked to evaluate a set of 50 images taken from vaginal smears
slides through a phase-contrast microscope (Leica MD1000,
Wetzlar, Germany) at 400Â magnification. All candidates were
students with a sufficient theoretical background of microscopy,
microbiology, and the composition of normal and abnormal
vaginal flora, but their level of practical experience, including
exposure to microscopy of clinical specimens, varied from none
(n = 2), some (n = 3), to extensive (n = 1). After a total edu-
cation time of 10 hours during a 4-week training period (see
below), all candidates evaluated a second set of 50 distinct
images. All images were digital pictures taken from wet-
mounted slides from Femicare Research Center files and were
chosen in a way to contain some examples of the most common
abnormalities to be detected on vaginal smears. The results of
both readings were compared to the results of an experienced
microscopist (G.D.), totaling 7 readers with 100 evaluated im-
ages each.
Before reading the first set of images, all candidates had a
concise explanation from the microscopist about how to fill the
forms containing a standardized list of items to be evaluated on
the images, as in used in both research and clinical settings at
Femicare Research Center (see Table 1). After that, they ana-
lyzed all images without pause and had their reading time
recorded. All candidates evaluated the images independently
without any interference and being alone in a separated room.
All candidates analyzed the same set of images. During the
J Lower Gen Tract Dis & Volume 19, Number 2, April 2015 165
1
Femicare vzw, Clinical Research for Women, Tienen, Belgium;
2
University
Hospital Gasthuisberg, Katholieke Universiteit Leuven, Leuven, Belgium;
3
Regional Hospital Heilig Hart, Tienen, Belgium; and
4
Department of
Pathology, Botucatu Medical School, Sa ˜o Paulo State University, Botucatu,
Sa ˜o Paulo, Brazil
The authors have declared they have no conflicts of interest.
Reprint requests to: Gilbert G.G. Donders, MD, PhD, Femicare Clinical
Research for Women, Gasthuismolenstraat 31, 3300 Tienen, Belgium.
E-mail: gilbert.donders@femicare.net
* 2014, American Society for Colposcopy and Cervical Pathology
Copyright © 2015 American Society for Colposcopy and Cervical Pathology. Unauthorized reproduction of this article is prohibited.