Fig. 1. Evolution of mean arterial blood pressure in patients who received 8 mg ropivacaine (n= 30; closed circle), 8 mg ropivacaine and 15 μg clonidine (n=30; open circle), 8 mg ropivacaine and 45 μg clonidine (n= 30; open square), or 8 mg ropivacaine and 75 μg clonidine (n= 30; open triangle). Results are expressed as the mean ± SD. Time 0 = intrathecal injections. * P < 0.05.

Fig. 1. Evolution of mean arterial blood pressure in patients who received 8 mg ropivacaine (n= 30; closed circle), 8 mg ropivacaine and 15 μg clonidine (n=30; open circle), 8 mg ropivacaine and 45 μg clonidine (n= 30; open square), or 8 mg ropivacaine and 75 μg clonidine (n= 30; open triangle). Results are expressed as the mean ± SD. Time 0 = intrathecal injections. * P < 0.05.

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