Linked Life Data

7211912

Source:http://linkedlifedata.com/resource/pubmed/id/7211912

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1981-5-28
pubmed:abstractText
The need to avoid hypokalemia during diuretic therapy in nondigitalized patients has been questioned. Twenty-one patients with (1) mild essential hypertension, (2) plasma potassium of less than 3.5 meq/liter during previous diuretic treatment, and (3) normal findings [less than 6 unifocal ventricular premature beats/hour] on 24-hour ambulatory electrocardiographic monitoring and exercise testing were treated with hydrochlorothiazide (50 mg twice a day) for four weeks and then ambulatory electrocardiographic monitoring and exercise testing were repeated. Ambulatory electrocardiographic monitoring revealed that ventricular ectopic activity developed in seven patients and complex ventricular ectopic activity (multifocal ventricular premature beats, ventricular couplets and/or ventricular tachycardia) in four. Only two of these seven had ventricular ectopic activity during exercise testing while they were hypokalemic. Potassium repletion in these seven patients with spironolactone abolished complex ventricular ectopic activity and reduced unifocal ventricular premature beats significantly (p less than 0.01) from an average of 71.2 ventricular premature beats/hour/patient during hydrochlorothiazide treatment to 5.4 ventricular premature beats/hour/patient after potassium repletion. Although complex ventricular ectopic activity was more likely to occur with plasma potassium less than 3.0 meq/liter, restoration of normokalemia was required in several patients to abolish residual ventricular ectopic activity. Persistent ventricular ectopic activity in one patient suggested that myocardial injury sustained during hypokalemia may initiate chronic ventricular ectopic activity. Even in nondigitalized patients, the hazard of diuretic-induced ventricular ectopic activity warrants correction of hypokalemia.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0002-9343
pubmed:author
pubmed:issnType
Print
pubmed:volume
70
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
762-8
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1981
pubmed:articleTitle
Diuretic-induced ventricular ectopic activity.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't