Related Experiment Video
Updated: Aug 18, 2025

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
Published on: February 23, 2024
Getting the size right: Are clinicians ready for it?
Joanna C Roper1, Madhu Naidu2, Ranee Thakar3
1Department of Obstetrics and Gynaecology, Croydon University Hospital, 530, London Road, Thornton Heath CR7 7YE, UK.
Accuracy in digital examinations for obstetrics and gynaecology is poor. Training may improve clinicians' ability to accurately estimate measurements during digital exams, enhancing patient care.
Area of Science:
- Obstetrics and Gynaecology
- Clinical Skills Assessment
Background:
- Digital examination is crucial in obstetrics and gynaecology for tasks like cervical assessment and pessary fitting.
- Accurate digital assessments require adequate clinician training to inform clinical decisions.
Purpose of the Study:
- To evaluate the accuracy of clinicians' estimations for three different measurement tasks.
- To assess if accuracy varied based on clinician seniority or job role.
Main Methods:
- Doctors and midwives estimated their index finger length, anal sphincter model length, and cervical dilation (7 cm and 9 cm).
- Measurements were compared to actual values, and accuracy was analyzed by job role and seniority.
Main Results:
- Only 4.6% accurately estimated their index finger length; 0% of midwives and 5.5% of doctors.
- Significant differences in measurement accuracy were found between doctors and midwives.
- Midwives showed higher accuracy in cervical dilation estimations at both 7 cm and 9 cm compared to doctors.
Conclusions:
- Clinician accuracy in estimating various measurements during digital examinations was generally poor.
- Enhanced training may improve awareness of finger length and overall accuracy in clinical practice.
Related Concept Videos
Pre-Procedural Guidelines for Assessing Blood Pressure
Assessment of Airway, Skin Color, and Use of Accessory Muscles
Introduction
The initial evaluation of a patient's respiratory system...
Guidelines For Measuring Vital Signs
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
Renal Failure: Dose Adjustments
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.

