qr

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qr

(mechanics)

QR

On drawings, abbr. for quarter round.
References in periodicals archive ?
age, EF, and width of QRS complex while frequency and percentage was used for qualitative variables like gender and success rate.
sup][30] combined the QRS-T angle with the QRS score and identified high-risk patients with 1-year mortality of 8.
When we assessed the relationships between QRS score and the indices of LV function obtained by Echocardiography performed at the time of ICCU discharge, QRS Score was inversely correlated with LVEF (r= -0.
It is characterized by unchanged PR intervals for conducted beats (those followed by a QRS), with intermittent sinus P-waves without conduction through to the ventricles (evidenced by the absence of a QRS complex) (Surawicz & Knilans, 2008).
QRS Diagnostic's product line expansion and global presence has fostered company growth as well.
Atrioventricular nodal reentrant tachycardia (AVNRT), a reentrant form of narrow QRS complex tachycardia, is based on a dual (slow and fast) pathway of the compact AV node (FIGURE 4).
The most sensitive 12-lead ECG criteria for the diagnosis of late ventricular potentials (figure 4) were: QRS [greater than or equal to] 110 ms and T0e [greater than or equal to] 270 ms (table 3).
QRS was previously based at Seamer near Stokesley in North Yorkshire, but last year invested more than pounds 900,000 in the move to its new 16,000 sq ft premises ( including a pounds 200,000 regional selective assistance (RSA) grant from regional development agency One NorthEast.
In June of 2003, the Centers for Medicare and Medicaid Services approved reimbursement for ICD placement in patients with an EF of 30% or less who have a QRS interval greater than 120 ms.
The rhythmic waves corresponded to the patient's pulse and occurred after the appearance of each QRS complex on electrocardiography (ECG).