Abstract
Article: Sonographic Prenatal Diagnosis of Ectrodactyly: A Case Study
Authors: Gretchen Bailess, BS, DVM, RDMS
Category: OB/GYN [OB]
Credit: 0.5 SDMS CME Credit
Objectives: After studying the article entitled “Sono-graphic Prenatal Diagnosis of Ectrodactyly: A Case Study,” you will be able to:
Describe the different types of ectrodactyly
Explain the process of fetal limb development
Define the important role of sonography in identifying ectrodactyly
The most critical group of specialized cells for controlling the growth and development of the limb buds are the:
Proliferative mesenchymal
Zone of polarizing activity
Progress zone
Apical ectodermal ridges
Typical ectrodactyly, or V-shaped lesion, involving only the phalanges has an incidence of:
One per 15,000
One per 18,000
One per 90,000
One per 150,000
The autopod limb segment designates the:
Hand and foot
Forearm and lower leg
Upper arm and leg
Fingers and toes
Sonographic examination of fetal hands is important for deformity identification and the hands can be visualized when the long bones begin to ossify, as soon as:
8 weeks gestation
11 weeks gestation
15 weeks gestation
20 weeks gestation