vectorcardiography


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vectorcardiography

 [vek″tor-kahr″de-og´rah-fe]
the registration, usually by formation of a loop on an oscilloscope, of the direction and magnitude (vector) of the moment-to-moment electromotive forces of the heart during one complete cycle. adj., adj vectorcardiograph´ic.

vec·tor·car·di·og·ra·phy

(vek'tŏr-kar'dē-og'ră-fē),
The integration of scalar electrocardiographic recordings on two or three planes to produce a vectorcardiogram consisting of loops divided by a timing mechanism for all the waves of the electrocardiogram.

vectorcardiography

/vec·tor·car·di·og·ra·phy/ (-kahr″de-og´rah-fe) the registration, usually by formation of a loop display on an oscilloscope, of the direction and magnitude (vector) of the moment-to-moment electromotive forces of the heart during one complete cycle.vectorcardiograph´ic

vectorcardiography

[-kär′dē·og′rəfē]
Etymology: L, vector, carrier; Gk, kardia, heart, graphein, to record
a method of recording the direction and magnitude of the heart's electric activity.

vectorcardiography

Spatial electrocardiography, 3-D electrocardiography Cardiology A sophisticated type of EKG, which simultaneously demonstrates myocardial activity and damage; in VC, the strength and direction of electric currents passing through the heart are represented as vector loops Application Diagnose and monitor left-sided hypertrophy and hyperfunction, bundle branch blocks and MIs; VC informs on the direction of heart muscle activity as well as its force vis-a´-vis contraction and relaxation.

vec·tor·car·di·og·ra·phy

(vek'tŏr-kahr'dē-og'ră-fē)
1. A variant of electrocardiography in which the heart's activation currents are represented by vector loops.
2. The study and interpretation of vectorcardiograms.

vectorcardiography

the registration, usually by formation of a loop on an oscilloscope, of the direction and magnitude (vector) of the moment-to-moment electromotive forces of the heart during one complete cycle.
References in periodicals archive ?
The 35th International Congress on Electrocardiology, and 49th International Symposium on Vectorcardiography will be held in St Petersburg next year.
Instead of recording serial ECGs at various times, as is the common practice in the emergency department, vectorcardiography allows online assessment of recurrent ischemic events as reflected by ST variability.
The high resolution SAECG and vectorcardiography (VCG) were employed recently as methods for qualitative and quantitative diagnosis of patients with acute myocardial infarction (AMI).
Vectorcardiography, IP and Doppler echocardiography were also performed to assess the changes in QRS loop area, PF and mean pulmonary artery pressure (PAPm) in response to acute hypoxia (inhalation of hypoxic mixture 16% O2 for 5-10 minutes) in 21 patients with CB and 7 healthy subjects.
Key words: vectorcardiography, pulmonary hypertension, pulmonary flow, pulmonary circulation
Vectorcardiography during acute hypoxia documented RV overload signs as increase in QRS loop in the II, III, and IV quadrants of transverse plane in healthy subjects, orientation of QRS loop to right with increase in QRS loop area by 68% in CB patients with high PAPm and frontal orientation of QRS loop with increase in QRS loop area by 75% in patients CB and normal PAPm.
Conclusion: The proposed DECARTO method, initially intended mainly for intelligible-pictorial visualization of vectorcardiographic data, provides also some increase of diagnostic accuracy in recognition of the left and right ventricular hypertrophies as compared to the standard electrocardiography and orthogonal vectorcardiography.
Along with the aforementioned indices, the sums of wave amplitudes used in the orthogonal vectorcardiography, Rx+Sz for LVH and Rz+Sx for RVH, were also considered and tried on the same experimental set.