Abstract:
:Echocardiography (ECHO) is useful to document changes in left ventricular mass (LVM) in groups of patients, but may be too variable for use in the individual patient. Magnetic resonance imaging (MRI) may be a more precise and reliable method to quantify the mass of the left ventricule. This study reports the accuracy, precision, and reliability of LVM estimates by MRI as compared to data obtained by ECHO in hypertensive patients. Accuracy referred to the comparison of LVM by MRI to anatomical LVM determined by autopsy. Precision was examined using 34 duplicate MRI images and by blindly reading 24 duplicate M-mode strips. Reliability was assessed by MRI in four subjects over 2 months, and by ECHO in 22 hypertensive patients over 2 weeks. Agreement between MRI and ECHO estimates of LVM was determined in the same 17 hypertensive patients using linear regression. MRI LVM estimates were within 17.5 g (95% CI) of the true LVM. The linear agreement between MRI and ECHO estimates of LVM could be described by the equation MRI = 0.61 x ECHO + 49.57 (r = 0.63, P < .01). The precision of LVM by MRI (11 g) was over twice that observed with ECHO (26 g). The reliability of MRI LVM estimates was more consistent (+/- 8 g) than that for ECHO (+/- 49 g). MRI appears to be a more precise and reliable method for measuring LVM, and would be more suitable than ECHO for the clinical evaluation of the individual patient.
journal_name
Am J Hypertensjournal_title
American journal of hypertensionauthors
Bottini PB,Carr AA,Prisant LM,Flickinger FW,Allison JD,Gottdiener JSdoi
10.1016/0895-7061(94)00178-Esubject
Has Abstractpub_date
1995-03-01 00:00:00pages
221-8issue
3eissn
0895-7061issn
1941-7225pii
0895-7061(94)00178-Ejournal_volume
8pub_type
杂志文章abstract:BACKGROUND:We previously showed that the infusion of tumor necrosis factor alpha (TNF-alpha) induces hypertension and vascular dysfunction in late pregnant but not virgin rats. In the present study, we tested the hypothesis that levels of ovarian hormones to mimic pregnancy are required for TNF-alpha-induced changes in...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/j.amjhyper.2007.07.002
更新日期:2007-11-01 00:00:00
abstract::The most common reason for an outpatient physician visit is for the diagnosis and treatment of hypertension. The Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC) VII, which is increasingly evidence-based, advises the clinician to use studies of the mean response...
journal_title:American journal of hypertension
pub_type: 社论,评审
doi:10.1016/j.amjhyper.2003.12.007
更新日期:2004-04-01 00:00:00
abstract::To evaluate the reactivity to psychological stress in patients with essential hypertension we investigated hemodynamic and endocrinologic changes during a mental arithmetic task (MAT) and a mirror drawing test (MDT) in 10 hypertensive subjects. Hemodynamic changes were assessed continuously using an ambulatory radionu...
journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章
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更新日期:1997-03-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/4.6.521
更新日期:1991-06-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
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更新日期:2016-08-01 00:00:00
abstract:BACKGROUND:The mechanism of left atrial (LA) remodeling is poorly understood. The aim of this longitudinal study was to investigate whether changes in NT-proBNP levels relate to alterations of LA structure and function over time in a multi-ethnic population. METHODS:From the prospective cohort study, the Multi-Ethnic ...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpab018
更新日期:2021-01-25 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章,评审
doi:10.1016/s0895-7061(96)00387-1
更新日期:1996-12-01 00:00:00
abstract:BACKGROUND:We examined data from a cohort of Caucasian women for evidence of an association between serum vitamin D (25-hydroxyvitamin D (25(OH)D)) insufficiency and greater risk of systolic hypertension in the population-based longitudinal Michigan Bone Health and Metabolism Study (MBHMS). METHODS:The cohort includes...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1038/ajh.2010.226
更新日期:2011-03-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章
doi:10.1016/s0895-7061(99)00180-6
更新日期:2000-01-01 00:00:00
abstract::Cicletanine sulfate was tested on bicarbonate-dependent pHi changes in cultured vascular smooth muscle (A10 line). Cicletanine sulfate exhibited double reactivity with regard to the cell alkalinization induced by bicarbonate uptake. The analysis of 11 concentration-response curves revealed a high reactivity component ...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/6.8.674
更新日期:1993-08-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/ajh/4.2.194s
更新日期:1991-02-01 00:00:00
abstract::Angiotension converting enzyme (ACE) inhibitors and beta-blockers have been reported to possess disparate effects on insulin sensitivity. The aim of this study was to study the effects of the selective beta-1 blocker bisoprolol and of the ACE inhibitor captopril on cellular insulin action in hypertensive individuals. ...
journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0895-7061(97)00320-8
更新日期:1997-12-01 00:00:00
abstract:BACKGROUND:Previous reports have demonstrated the antihypertensive efficacy of high doses of spironolactone in subjects with primary aldosteronism and, to a lesser degree, subjects with resistant hypertension. METHODS:In current analysis, we examined the antihypertensive benefit of adding low-dose spironolactone to mu...
journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章
doi:10.1016/s0895-7061(03)01032-x
更新日期:2003-11-01 00:00:00
abstract::Solitary kidneys, especially in rats, appear vulnerable to develop functional and structural damage. However, differences in susceptibility exist between strains. It is not clear whether this is intrinsic to the kidney or due to environmental factors. Therefore, the aim of the present study was to investigate possible...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/s0895-7061(99)00024-2
更新日期:1999-06-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章
doi:10.1016/s0895-7061(97)00126-x
更新日期:1997-08-01 00:00:00
abstract:BACKGROUND:Noninvasive applanation tonometry (APT) is useful to assess aortic stiffness and pulse wave reflection. Moreover, APT can predict outcome in many conditions such as arterial hypertension. In this study, we test whether APT measurements relate to progression of aortic disease in Marfan syndrome (MFS). METHOD...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1038/ajh.2009.115
更新日期:2009-09-01 00:00:00
abstract:BACKGROUND:Structural atherosclerotic damage, arterial stiffness, pulse pressure (PP), and renal hemodynamics may interact and influence each other. Renal resistance index (RRI) appears as a good indicator of systemic vascular changes. The aim of our study was to assess the independent relationships of carotid intima-m...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpv130
更新日期:2016-04-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpw007
更新日期:2016-07-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1038/ajh.2007.39
更新日期:2008-02-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
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更新日期:1992-01-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1038/ajh.2012.36
更新日期:2012-07-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/s0895-7061(99)00144-2
更新日期:1999-11-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章,评审
doi:10.1093/ajh/2.1.57
更新日期:1989-01-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/s0895-7061(01)02162-8
更新日期:2001-08-01 00:00:00
abstract::Plasma glucose and insulin responses to an oral glucose challenge and insulin-stimulated glucose uptake were measured in 47 age-, weight-, and sex-matched lean white men (16 with normal blood pressure, 14 with untreated hypertension, nine treated with a thiazide diuretic only, and eight treated with combined diuretic ...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/2.6.419
更新日期:1989-06-01 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpy008
更新日期:2018-04-13 00:00:00
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journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpy155
更新日期:2019-01-01 00:00:00
abstract::Recent findings related to the renin-angiotensin system have provided a more elaborated understanding of the pathophysiology of hypertension and kidney diseases. These findings have led to unique concepts and issues regarding the intrarenal renin-angiotensin system. Angiotensinogen is the only known substrate for reni...
journal_title:American journal of hypertension
pub_type:
doi:10.1016/j.amjhyper.2005.11.014
更新日期:2006-05-01 00:00:00
abstract:BACKGROUND:New onset resistant hypertension in a previously stable patient with chronic hypertension should lead to consideration of secondary causes. Electrolyte abnormalities are useful clues for identifying some common causes, especially mineralocorticoid excess. CASE PRESENTATION:We report the case of a 69-year-ol...
journal_title:American journal of hypertension
pub_type:
doi:10.1093/ajh/hpz125
更新日期:2019-11-15 00:00:00
abstract:BACKGROUND:Physical activity (PA) has been associated with decreased left ventricular (LV) hypertrophy in previous studies. However, little is known about the relationship between PA and LV structure and factors which influence this relationship among African Americans. METHODS:We evaluated 1,300 African Americans wit...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpx044
更新日期:2017-06-01 00:00:00