A 42‑year‑old woman is admitted with sudden onset tearing chest and back pain. Blood pressure is 195/110 mmHg in the right arm and 170/90 mmHg in the left, with a new early diastolic murmur. CT aortogram confirms an acute Stanford type B aortic dissection without signs of rupture or malperfusion. According to standard management recommendations, which is the most appropriate immediate blood pressure target?