
The study that changed everything was published last week. An alien visiting the national cardiology meeting in Orlando may have thought that the trial of note was the one that featured the culmination of one hundred years of lipid research to develop an inhibitor of the enzyme PCSK9 (Proprotein convertase subtilisin/kexin type 9) that lowers lipids and reduces the risk of future heart attacks.
The Martian would be wrong.
The trial that has cardiologists across the land choking back tears is a hypertension study done in black barbershops. The idea is fairly simple. Black men have the highest rates of disability related to uncontrolled hypertension, in large part related to a difficulty in engaging black men with the health care system. The end result of poorly controlled hypertension in this community was on full display where I did much of my medical training as a student and resident in the heart of North Philadelphia. Ensconced in the walls of Temple we learned to manage the end organs ravaged by hypertension. I have to say I never stopped to think what we could have done to interrupt this process even though we were located in the heart of an underserved black community.
Luckily, Ronald Victor has been thinking about this problem for some time. A Cedars Sinai physician, his research focuses on community interventions to rectify health care disparities. His first study in 2007 sought to examine the feasibility of blood pressure screenings in black barbershops because this was where black men congregated and may be susceptible to influence by important peer influencers: barbers.
The 2007 study by Victor proved that it was feasible to enlist barbers to measure blood pressures, correctly stage hypertension, and make a referral to a clinician for treatment. This opened up funding for the next step in the process- actually affect blood pressure control in barbershops. The trial was wildly positive. In stark contrast to the multibillion dollars of research that lead to a $1000/month PCSK9 inhibitor that gives us a 15% relative risk reduction of a composite outcome of stroke/death/heart attack, the Victor barbershop protocol resulted in a staggering average 27mmHg blood pressure drop in 6 months. The potential ramifications are large for a 20mmHg drop – a 30% reduction in risk of a heart attack or a 40% reduction in risk of a stroke.











