SU1604352A1 - Method of determining right vetricular failure - Google Patents

Abstract

This invention relates to medicine, namely cardiology. The goal is to increase the accuracy of the detection of hidden forms of decompensation of the right heart. Right ventricular insufficiency is determined by recording the central venous pulse curve and analyzing its elements, while on the phlebogram of the external strap vein, the depth of the X and Y points of the collages and the amplitude of wave A are measured, expressed as a percentage of the maximum amplitude of the curve, the indicator and if the value of the Y-collage is less than 44% or the XY / A value is below 95%, right ventricular failure is diagnosed. 1 il.

Description

The invention relates to medicine, namely cardiology.

The goal is to increase the accuracy of the detection of covert forms of decompensation of the right heart.

The drawing shows the principle of operation of the phlebogram.

The method is carried out as follows.

Having achieved the appearance on the oscilloscope screen of the venogloma of the external strap vein with the most pronounced x and y collapses for the patient, they record (on devices like 3NEK, 6NEK, physiograph 068 with the Pulse-10 prefix and so on) when holding half-breathing at a tape speed of the mechanism of 50 mm / s at least 5 complexes of the curve synchronously with the electrocardiogram of the II

standard lead and phonocardiogram on the first mid-frequency tract from the Botkin point. Phlebogram processing begins with finding its amplitude A, for which two horizontal lines are parallel to each other: one through the apex of wave a or c (the higher one), the other through the lowest point of the deepest collapse (usually x collapse) . The distance between these lines will correspond to the amplitude of the phlebogram. The amplitude of the next element of the phlebogram, wave a, corresponds to the distance from its base to the top. The depth x and y of the collapse is then determined. For this, a horizontal line is drawn through the top of the wave d of the phlebogram and two perpendiculars are raised to it, continuing to the lowest points x and y

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collapses. The length of these perpendiculars will be a measure of the depth of collapses on the curve of the venous pulse. Each of the listed elements is measured with a ruler in millimeters, no less than in five phlebographic complexes, after which their average value is derived. The amplitude of wave a and the depth X and of the collapse are expressed as a percentage relative to the amplitude of the phlebogram, taking the magnitude of the latter to be 100%. In conclusion, a complex flabographic index (CFP) is calculated using the formula

CPP,

where KFP - complex phlebographic indicator,%;

X - the depth of systolic collapse,%;

y is the depth of diastolic collapse,%:

a - amplitude-wave a,%.

If in this patient the depth of the u-collapse is less than 44% and (or) the value of the CPP is less than 95%, then right ventricular insufficiency is diagnosed.

Example. Patient R., 49 years old. Diagnosis: bronchial asthma, infectious-allergic, hormonal-dependent, moderately severe, non-impregnated period. Chronic obstructive bronchitis in the acute phase. Emphysema is easy. Pneumosclerosis. NAM 1. Fights

Flax from the age of 19 At the time of examination there are no clinical signs of right ventricular insufficiency. According to the phlebography, there is a decrease in the depth of the bin-collapse to 25% and a decrease in CFP to 48.3%. Thus, in a patient R., there is a hidden right ventricular insufficiency.

The proposed method is reliable, it allows the diagnosis of preclinical forms of right ventricular insufficiency. The method has no contraindications. The simplicity of the method creates the prerequisites for its widespread introduction into

15 practice, and all stages of its implementation are feasible for nurses.

Formula 3 and the third method of determining right ventricular insufficiency by recording the curve of the central venous pulse and analyzing its elements, characterized in that, in order to improve the accuracy in detecting latent forms of decompensation,

25, the phlebogram of the external belt vein measures the depth X and the collapses and the amplitude of wave a, expresses them as a percentage relative to the maximum amplitude of the curve, calculates the x-y / a ratio and if 30 y-collapse is less than 44% and / or x -y / below 95% diagnose right ventricular failure.

Claims (1)

Claim A method for determining right ventricular failure by recording the curve of the central venous pulse and analyzing its elements, characterized in that, in order to increase accuracy in revealing hidden forms of decompensation, the depth of x and y collapses and the wave amplitude a are measured on the external jugular vein phlebogram, and expressed in percent relative to the maximum amplitude of the curve, calculate the x-y / a parameter and if the y-collapse value is less than 44% and / or the x-y / a value below 95%, they diagnose right ventricular failure. collapses. The length of these perpendiculars will be a measure of the depth of collapses on the curve of the venous pulse. Each of the listed elements is measured using a ruler in millimeters in at least five phlebographic complexes, after which their average value is derived. The wave amplitude a and the depth x and y of the collapses are expressed as a percentage in relation to the amplitude of the phlebogram, taking the value of the latter as 100%. In conclusion, calculate the complex phlebographic indicator (CFP) by the formula kpf = - ^ A a where KFP - complex phlebographic indicator,%: x is the depth of systolic collapse,%: y - the depth of diastolic collapse,%: a is the amplitude of the wave a,%. If in this patient the depth of g-collapse is less than 44% and (or) the value of KPF is lower than 95%, then 25 right ventricular failure is diagnosed. Example. Patient P „49 years old. Diagnosis: bronchial asthma, infectious-allergic, hormone-dependent, moderate, non-accessible period. Chronic 30 obstructive bronchitis in the acute phase. Emphysema is light. Pneumosclerosis DN 1. Bo-