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editorial
. 2014 Dec 22;10(6):1069–1072. doi: 10.5114/aoms.2014.47818

Commentary on recent guidelines for treating hypertension

Wilbert S Aronow 1,
PMCID: PMC4296064  PMID: 25624840

The American College of Cardiology Foundation/American Heart Association 2011 expert consensus document on hypertension in the elderly recommended a blood pressure < 140/90 mm Hg in adults younger than 80 years of age at high risk for cardiovascular events [1]. On the basis of data from the Hypertension in the Very Elderly Trial [2], these guidelines state that the systolic blood pressure (SBP) should be reduced to 140–145 mm Hg if tolerated in adults aged 80 years and older [1]. I concur with these guidelines [37].

The Systolic Hypertension in the Elderly Program (SHEP) also showed reduction in cardiovascular events in elderly patients including those older than 80 years whose SBP was reduced to 140–145 mm Hg by antihypertensive drug therapy [8]. The choice of specific antihypertensive drugs such as diuretics, angiotensin-converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), β-blockers, or calcium channel blockers (CCBs) depends on efficacy, tolerability, presence of specific comorbidities and cost [1]. If β-blockers are used, I would not use atenolol [912] but would use carvedilol, nebivolol, or bisoprolol [11, 12]. β-Blockers should be especially used in patients with hypertension and ischemic heart disease. The current place of use of β-blockers in treatment of hypertension is extensively discussed elsewhere [11, 12].

A meta-analysis of 147 randomized trials including 464,000 persons with hypertension showed that except for the extra protective effect of β-blockers given after myocardial infarction and a minor additional effect of CCBs in preventing stroke, the use of β-blockers, ACE inhibitors, ARBs, diuretics, and CCBs causes a similar decrease in coronary events and stroke for a given decrease in blood pressure [13, 14]. The proportionate reduction in cardiovascular events was the same or similar regardless of pretreatment blood pressure and the presence or absence of cardiovascular events [13, 14].

The European Society of Hypertension/European Society of Cardiology 2013 guidelines recommend lowering the SBP to < 140 mm Hg in patients at low to moderate cardiovascular risk, diabetics, and patients with prior stroke or transient ischemic attack, coronary heart disease, or chronic kidney disease (CKD) [15]. In older patients younger than 80 years with SBP ≥ 160 mm Hg, the SBP should be lowered to 140–150 mm Hg with consideration of SBP < 140 mm Hg. In patients older than 80 years with SBP ≥ 160 mm Hg, the SBP should be lowered to 140–150 mm Hg provided they are in good physical and mental condition [15].

The American Diabetes Society 2013 guidelines recommend that diabetics with hypertension should have their SBP lowered to < 140 mm Hg [16]. Systolic blood pressure of < 130 mm Hg may be considered in younger patients with long life expectancy if achieved with few drugs and without side effects. The 2012 International Society of Nephrology guidelines for treatment of blood pressure in patients with non-dialysis-dependent CKD recommend that adults with CKD without diabetes mellitus [17] or with diabetes mellitus [18] with hypertension and albuminuria < 30 mg per 24 h should have their blood pressure lowered to ≤ 140/≤ 90 mm Hg with a class I B indication. If albuminuria greater than 30 mg/day is present, lowering of the blood pressure to ≤ 130/≤ 80 mm Hg has a class II D indication which I would not follow [17, 18].

The 2014 guidelines report from the Eighth Joint National Committee (JNC 8) on management of high blood pressure in adults made 9 recommendations [19]. The first recommendation was to use antihypertensive drug therapy in patients aged 60 years and older without CKD or diabetes mellitus to lower the SBP to < 150 mm Hg and the diastolic blood pressure (DBP) to < 90 mm Hg [19]. I agree with the diastolic blood pressure goal but disagree with the SBP goal recommendation, as do a minority report from JNC 8 and the American College of Cardiology Foundation/American Heart Association 2011 expert consensus document on hypertension in the elderly, which recommend that the SBP goal in patients younger than 80 years with hypertension without CKD or diabetes mellitus should be < 140 mm Hg [1, 20].

The Reasons for Geographic and Racial Differences in Stroke (REGARDS) study is an observational study of risk factors for stroke which includes 4,181 patients aged 55 to 64 years, 3,767 patients aged 65 to 74 years, and 1,839 patients aged 75 years and older (mean age: 79.3 years) [2123]. Median follow-up was 4.5 years for first occurrence of a coronary heart disease or stroke event, 4.5 years for nonfatal myocardial infarction or coronary heart disease death, 5.7 years for stroke, and 6.0 years for all-cause mortality. The data from this study generated a hypothesis that for all patients older than 55 years, the SBP should be lower than 140 mm Hg, with optimal values possibly between 120 and 139 mm Hg [21, 22]. The data from this study also suggest that the lowest risk for stroke at a median follow-up of 5.7 years occurs with SBP < 140 mm Hg in patients aged 55 to 64 years old, < 130 mm Hg in patients aged 65 to 74 years old, and < 150 mm Hg for patients aged 75 years and older [23].

Elderly persons have the lowest rates of adequate blood pressure control and the highest incidence of cardiovascular events. Blood pressure is adequately controlled in 36% of men and 28% of women between ages 60–79 years and in 38% of men and 23% of women aged 80 years and older [24]. I am very concerned that the higher SBP goal in older persons recommended by JNC 8 will lead to a higher incidence of cardiovascular events and mortality.

The second recommendation from JNC 8 was to use antihypertensive drug therapy to treat adults younger than 60 years to lower the DBP goal to < 90 mm Hg [19]. I concur with these guidelines.

The third recommendation from JNC 8 was to use antihypertensive drug therapy to lower the SBP goal to < 140 mm Hg in adults younger than 60 years [19]. I concur with these guidelines.

The fourth recommendation from JNC 8 was to use antihypertensive drug therapy to lower the blood pressure to < 140/90 mm Hg in adults aged 18 years and older with CKD [19]. I concur with these guidelines.

The fifth recommendation from JNC 8 was to use antihypertensive drug therapy to lower the blood pressure to < 140/90 mm Hg in adults aged 18 years and older with diabetes mellitus [19]. I concur with these guidelines.

The sixth recommendation from JNC 8 in the general nonblack population including diabetics was to use as initial antihypertensive therapy a thiazide-type diuretic, CCB, ACE inhibitor, or ARB [19]. I would use β-blockers as discussed elsewhere [11, 12]. β-Blockers should be especially used in patients with hypertension and ischemic heart disease [1, 1114]. The choice of specific antihypertensive drugs used depends on efficacy, tolerability, presence of associated comorbidities, and cost [1].

The seventh recommendation from JNC 8 in the general black population including diabetics was to use as initial antihypertensive therapy a thiazide-type diuretic or CCB [19]. The choice of specific antihypertensive drugs used depends on efficacy, tolerability, presence of associated comorbidities, and cost [1].

The eighth recommendation from JNC 8 states that in adults aged 18 years and older with CKD, initial or add-on antihypertensive drug therapy should include an ACE inhibitor or ARB to improve renal outcomes [19]. This includes all patients with hypertension and CKD regardless of race and presence or absence of diabetes mellitus. I agree with this recommendation. Compared with amlodipine, ramipril reduced progression of CKD in African-Americans with hypertensive nephrosclerosis without diabetes mellitus and an estimated glomerular filtration rate between 20 and 65 ml/min/1.73 m2 [25].

The ninth recommendation from JNC 8 states that the main goal of antihypertensive drug treatment is to achieve and maintain the blood pressure goal [10]. I concur. If the goal blood pressure is not achieved in 1 month, increase the dose of the initial antihypertensive drug or add a second drug from one of the classes of drug listed in recommendation 6. This list should also include a β-blocker. If the goal blood pressure is still not achieved, add a third class of drug. Do not use an ACE inhibitor plus an ARB together as you will not increase efficacy but will increase adverse effects [26]. If a fourth antihypertensive drug is needed, I would use an aldosterone antagonist. Referral to a specialist in hypertension may be necessary if the goal blood pressure cannot be achieved.

A 2013 blood pressure update is discussed elsewhere [22]. I also concur with the recommendations from the following 4 papers [2730].

The European Society of Hypertension position paper summarizes current evidence, unmet needs, and practical recommendations on use of renal sympathetic denervation to treat resistant hypertension in hypertension excellence centers [31]. However, the Symplicity HTN-3 study showed in 535 patients with resistant hypertension randomized to renal sympathetic denervation using a Medtronic Symplicity catheter system or to a sham control group that renal sympathetic denervation was not better than a sham-control arm in reducing office SBP at 6 months or 24-hour ambulatory SBP at 6 months [32].

References

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