Quinns right that there are no clinical trials showing any benefit to treating acute asymptomatic hypertension in the ED. The best review of available literature is here:
4: Decker WW, Godwin SA, Hess EP, Lenamond CC, Jagoda AS; American College of
Emergency Physicians Clinical Policies Subcommittee (Writing Committee) on
Asymptomatic Hypertension in the ED.
Clinical policy: critical issues in the evaluation and management of adult
patients with asymptomatic hypertension in the emergency department.
Ann Emerg Med. 2006 Mar;47(3):237-49. No abstract available.
PMID: 16492490 [PubMed - indexed for MEDLINE]
Nice job Quinn choosing your senior lecture to coincide with a recently published comprehensive review 😀
The studies that Wilco is refering to are really case reports like these:
: Yanturali S, Akay S, Ayrik C, Cevik AA.
Adverse events associated with aggressive treatment of increased blood
pressure.
Int J Clin Pract. 2004 May;58(5):517-9.
PMID: 15206510 [PubMed - indexed for MEDLINE]
2: Fischberg GM, Lozano E, Rajamani K, Ameriso S, Fisher MJ.
Stroke precipitated by moderate blood pressure reduction.
J Emerg Med. 2000 Nov;19(4):339-46.
PMID: 11074327 [PubMed - indexed for MEDLINE]
3: Grossman E, Messerli FH, Grodzicki T, Kowey P.
Should a moratorium be placed on sublingual nifedipine capsules given for
hypertensive emergencies and pseudoemergencies?
JAMA. 1996 Oct 23-30;276(16):1328-31. Review.
PMID: 8861992 [PubMed - indexed for MEDLINE]
Most of this occurred back when we were still treating hypertensive urgency (whatever that is) with sublingual nifedipine 😱
Although you might argue that any acute intervention that results in a dramatic lowering of BP(clonidine, captopril, blood letting) could give the same result there is some evidence that the effects on cerebral blood flow are some what different amongst different pharmacologic agents:
6: Gemici K, Baran I, Bakar M, Demircan C, Ozdemir B, Cordan J.
Evaluation of the effect of the sublingually administered nifedipine and
captopril via transcranial doppler ultrasonography during hypertensive crisis.
Blood Press. 2003;12(1):46-8.
PMID: 12699135 [PubMed - indexed for MEDLINE]
On the other hand since as DocB points out I am often the patients alternate PCP there really isn't any difference between me starting someone with an otherwise negative workup except for LVH and a DBP of 120 on their initial HTN regimen and their PCP starting them. If you are going to act as a PCP here are the current recs for outpatient treatment of HTN
5: Chobanian AV, Bakris GL, Black HR, Cushman WC, Green LA, Izzo JL Jr, Jones
DW, Materson BJ, Oparil S, Wright JT Jr, Roccella EJ; National Heart, Lung, and
Blood Institute Joint National Committee on Prevention, Detection, Evaluation,
and Treatment of High Blood Pressure; National High Blood Pressure Education
Program Coordinating Committee.
The Seventh Report of the Joint National Committee on Prevention, Detection,
Evaluation, and Treatment of High Blood Pressure: the JNC 7 report.
JAMA. 2003 May 21;289(19):2560-72. Epub 2003 May 14. Erratum in: JAMA. 2003 Jul
9;290(2):197.
PMID: 12748199 [PubMed - indexed for MEDLINE]
The only time this really comes up with me is like DocB mentioned when psych or detox won't take someone because their asyptomatic HTN is outside "their limits". In that case once I've adequately treated their ETOH withdrawl. I start them on a starter dose of an anti-HTN which seems to make detox happy. Personally I like B-blockers for the ETOH abusers with chronic HTN rather than HCTZ or ACE-I. Their electrolytes are usually sketchy enough without me messing with them. I tell them to follow up with their PCP once they are out of detox and then hope they do.