Assertion: viagra's use | /r/HasProperty | bp 90/50 mm hg
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text: Use with caution in the treatment of ED in patients with a recent (within 6 months) MI, stroke, or life-threatening arrhythmia;1 31 101 127 144 154 155 159 in patients with resting hypotension (BP <90/50 mm Hg) or hypertension (BP >170/110 mm Hg);1 31 101 127 144 154 155 159 or in patients with cardiac failure or CAD causing unstable angina.1 31 101 127 144 154 155 159 Assess cardiovascular and cerebrovascular status (including use of organic nitrates and nitrites) prior to initiating therapy.1 28 30 31 53 64 65