Detailed Instructions: Indicate the presence of numerical data in the abstract (whether numerical data plays a key role in medical records), solely using the information from the abstract.
Q: Abstract: It is postulated that the repetitive thrust of a sensitized blood vessel, at the peak of systole, against a taut pia-arachnoid fiber may produce or accentuate vasospasm. 
Question: Does the abstract contain any numerical data?
A:
No