Blood clotting time (by Sukharev)

Blood clotting time (according to Sukharev) is a fairly simple blood test taken from a finger. The clotting indicator itself is needed to assess the state of enzymes, but it does not provide information about the mechanisms of its disruption.

In general, the coagulation process shows how well the body can protect itself, including from blood loss. Coagulation directly depends on the functioning of the endocrine and nervous systems. To determine the condition and assess hemostasis (the general coagulation system), a coagulogram is prescribed, which has many indicators, including blood coagulation time (according to Sukharev).

In essence, Sukharev's method allows one to estimate the interval between blood sampling and the beginning of its thickening, or more precisely, the appearance of fibrin (clot) in it.

Previously, more than thirty methods of determining coagulability were used in medicine, today laboratories use only two, the most reliable and informative - according to Sukharev and the Lee-White method. The Sukharev method determines the coagulation time of capillary blood only, and the Lee-White method - only venous. This is their difference, but in general both of these methods are quite informative and without them it is impossible to obtain a complete homeostatic picture.

There is no preparation required for this analysis, except that the material is collected in the morning and on an empty stomach. Of the liquids, you can only drink water, since all kinds of juices, as well as tea or coffee, can distort the picture of the coagulogram. The procedure itself takes very little time.

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How is a coagulogram performed to determine blood clotting time (according to Sukharev)?

The material for the study is a small amount of blood from the patient's finger. The blood is placed in a special stand, the so-called Panchenkov apparatus. Since the very first drop may contain tissue fluid, only the following portions are examined, and the first drop is blotted and wiped off the finger.

The material is collected in a special vessel - a capillary, which is tilted in a given rhythm, either to the left or to the right at a certain angle. A stopwatch is used to record the time when the blood stops moving freely inside the vessel, i.e. begins to clot. The blood clotting time (according to Sukharev) is normally: the beginning of fibrin formation from 30 to 120 seconds, the end of the process from 3 to 5 minutes.

It should be noted that the results, i.e. the blood clotting time (according to Sukharev) may vary depending on what medications the person being examined is taking. For example, the period from the formation of fibrin to the end of the clotting process may be increased due to the use of anticoagulants (warfarin, fraxiparin, and others). Liver pathologies or more severe diseases, such as hemophilia, also increase the clotting time.

Blood clotting time (according to Sukharev) can be much lower than normal, as a rule, this happens in women taking oral contraceptives, and it is also possible with significant blood loss.

It should be taken into account that coagulation may be increased due to the fact that prothrombinase has begun to form in large quantities in the body. All information about the time and speed of blood flow coagulation is needed primarily by the doctor to clarify the diagnosis and monitor the effectiveness of therapy. In any case, the interpretation of such a complex indicator is the task of a specialist, not the patient himself.

Blood clotting time (according to Sukharev) is one of the ways to determine the stages of a complex enzymatic process when fibrinogen, soluble in a normal environment, turns into an insoluble form; this time indicator also plays an extremely important role in interpreting the coagulogram as a whole.