This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstetrics, Subject name: Gynaecology & Obstetrics
Which of the following is the most probable cause for the deceleration shown below? 
Select and explain. 
A. Cord Compression, B. Head Compression, C. Fetal Hypoxia, D. Feto-Maternal Hemorrhage
B: Head Compression
Answer: B: Head Compression 
Explanation: The image depicts an early deceleration Recognition of early deceleration Gradual decline in hea rate with both onset and recovery coincident with onset and recovery of the contraction. The nadir of the deceleration is 30 seconds or more after onset of deceleration The most impoant cause of early declerations is head compression.