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Sudden contraction of the smooth muscle of a blood vessel is vasospasm. It can be due to body response to hemorrhage or as an effect of drugs.
Coronary Vasospasm can cause Ischemic Heart disease (prinzmetal angina) or even MI
Arteriospasm, bleeding, and hematoma are complications of arterial puncture even when proper technique is used. Also, numbness and pain may be experienced; patient's pain is reason enough to terminate the procedure.