A visual guide to the new hypertension guidelines: https://www.medpagetoday.com/cardiology/hypertension/69399
In writing: http://www.acc.org/latest-in-cardiology/ten-points-to-remember/2017/11/09/11/41/2017-guideline-for-high-blood-pressure-in-adults
I don’t watch television news, so I always hear about these things from patients first. “What do you think of the new hypertension guidelines?”
“Haven’t heard about them yet, so I don’t know.” Seems pretty embarrassing really, doesn’t it? Shouldn’t I be alerted as a doctor before it hits the news?
First of all, these guidelines are NOT JNC 9.
What is JNC 9, you ask?
One of the messy complications of medicine for people in the US and in the world, is that there is not ONE set of guidelines. There are multiple sets of guidelines. Take mammograms, for example. The US Preventative Task Force* said that the evidence in their review could not differentiate between yearly and every other year mammograms. They said you could do it every other year. The American Cancer Society and the Susan Koman Foundation yapped and had different guidelines, do it yearly. So as a physician I have to not only pay attention to the guidelines but know who is putting them out. The radiologists wanted yearly mammograms too, surprise, surprise.
And do you think some of it is driven by money? Well, it’s the US.
JNC 8 is the Eighth Joint National Committee and put out guidelines in 2014. Their job is to review all of the big hypertension studies since JNC 7 and put out new guidelines. JNC 8 took over a year, was multidisciplinary, and the final document was 400+ pages.
They said that if a patient was over 60, their blood pressure should be taken standing up, and the goal was under 150/90. Under 60, sitting, goal under 140/90. Normal is 120/70 and below.
Then there are pages and pages of recommendations about which medicines to use and in special circumstances, that is: diabetes, kidney failure, heart disease, atrial fibrillation, etc, etc.
The cardiologists promptly started yelling about how JNC 8 is wrong and they put out a huge study saying that people have less heart attacks if their blood pressure is 125/80 or below.
But… the heart is not the only organ in the body. My patients are 77% over age 50 and 48% over 65. Once a person hits 80, their blood pressure may drop when they stand up. Most do. And low blood pressure, well, it’s bad for the over 80 crowd to get poor blood flow to the brain or to the kidneys or to faint and break things. That is why JNC 8 is multidisciplinary: because we need geriatrics and psychiatry and ortho and family medicine to be part of the guidelines.
So these NEW and IMPROVED guidelines. Well, who is putting them out? American Heart Association, American College of Cardiology, and a bunch of other mostly heart related organizations. And they are comparing it to JNC 7, not JNC 8. JNC 8 is being ignored. This document is a mere 192 pages, with the “short” version being 112 pages.
It says that blood pressure 130/80 to 140/90 is stage I hypertension, not prehypertension, and that we should treat it with lifestyle changes. Drugs are still to be recommended at anything over 140/90, though honestly, I start with lifestyle there too. Over 180/120 is now “hypertensive crisis”, consult your doctor immediately. 140-180/90-120 is stage II hypertension.
How will this change my practice? I am still thinking about the new guidelines and who has skin in the game. The AAFP (American Academy of Family Practice) put out a link to the guidelines and then a cautious comment to the effect of “We are studying how we should respond to this.”
Before this came out, I would tell people the JNC 8 goals. I do stand the people over 60 up, most of the time. I also tell people that the cardiologists want their blood pressure lower. And then that the cardiologists mostly ignore hypertension and cholesterol guidelines anyhow. If I follow the guidelines and then the patient sees a cardiologist, the cardiologist usually changes something. Guidelines be damned.
It comes down partly to a patient’s goal. I have people come in and say, “I don’t want to die of dementia!!” I see that as an opening. “What DO you want to die from?” People have different ideals. Some say, “I don’t want to die!” but then many do think about it. Sometimes this changes their ideas about what they want treated and what they don’t want treated.
Not everyone’s blood pressure drops in their 80s. Some people develop hypertension in their 90s. I tell them. They say, “I’m not taking a drug!”
I reply, “Let’s talk about strokes.”
They usually are not afraid of sudden death, but they don’t want the disability of a stroke. Many choose medicine after all.
One of the issues with guidelines is complexity. I could spend 20 minutes with a patient just talking about hypertension guidelines and choices of drugs and side effects and why they should be on an ace inhibitor or ARB if they have diabetes…. and there are guidelines for EVERYTHING. Sometimes conferences feel like all the specialists yelling: only half of diabetics are controlled, only one third of hypertensives are controlled, family doctors aren’t screening for urinary incontinence enough, osteoporosis, lung cancer, stop smoking! And then what my patient really needs is to talk about their adult child, in jail for addiction, and how frightened they are about overdose and the grandchild and the future…..
JNC-8 flowchart: http://www.nmhs.net/documents/27JNC8HTNGuidelinesBookBooklet.pdf
*lots of guidelines: https://www.uspreventiveservicestaskforce.org/