My husband's BP is 106/44. It's been hot here in the low to mid 90's the past week. 8 mos ago, my husband was had a "hypertensive emergency" with BP 265/160. He was hospitalized for 5 days. He's on Lisinopril, Metoprolol, hydralazine, Tekturna, Plavix, hydrocholorthiazide. But now, with the hot weather, he seems to be having a problem with dizziness, sleepiness, etc. Should he be concerned about these readings? He also got a reading of 106/44. Thank you for any advice.