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Job Definition 6.2 functionality of the cardiovascular system. Martine Sample With the reduction of the heart emits a certain amount of blood, it is called systolic volume (CO). The amount of blood ejected in one minute, is called cardiac output (IOC). Systolic volume of the heart is calculated by the formula Starr: SD = [(101 ± 0.5 PD) - (0.6 * ADD)] - 0.6 V, where CO - systolic volume; PD - pulse pressure; ADD - diastolic blood pressure; . B - age minute volume of blood is calculated as follows: IOC = SO * HR, where the IOC - minute volume of blood; CO - systolic blood volume; HR - heart rate. To determine the systolic volume in children used a modified formula Starr: SD = [(40 + 0.5 * PD) - (0.6 * ADD)] + 3,2V important indicators of the functional state of the cardiovascular system They are systolic blood pressure, diastolic blood pressure and pulse pressure. The maximum pressure during systole is called systolic pressure and the lowest blood pressure during diastole - diastolic. . Pulse pressure is determined by the pressure difference in systolic and diastolic blood pressure can be determined indirectly by using measuring instruments - manometer and stethoscope or electronic tonometer, when fixing the cuff devices at the level of the brachial artery location. Normal value of blood pressure in children under 10 years is determined by the formula .AND. Molchanova: ADSPGZH = 80 + 2 * n, where ADSPGZH - blood pressure, systolic first year of life, n - the number of months after birth; Td from 1 to 10 s = 100 + n, where Td from 1 to 10 years - the systolic blood pressure of to 10 years, n - age in years Diastolic pressure is 1/3 of systolic pressure. Heart rate is measured by pulse. By using palpation method can estimate your heart rate by feeling the pulsation of the radial artery, which is located in the area of the wrist. Palpation (feeling) is carried on the back of the inner surface of the forearm above the wrist joint. The heart rate is dependent on age, individual characteristics, and other factors. Objective: To learn how to measure your blood pressure and learn the methods for determining the functional state of the cardiovascular system. The equipment: a device for measuring blood pressure, stethoscope, stopwatch. The progress of the work. Prior to the study, to determine the subject's heart rate at 1 minute and blood pressure. For a quick determination of the heart rate calculation is made for 15 seconds (15 * 4 = 60 seconds or 1 minute). When blood pressure measurement cuff pressure gauge should be mounted on the shoulder, so that the lower end of it was at 2-3 cm above the elbow. Set stethoscope in the elbow at the brachial artery throbbing. The cuff is pumped air to 150-180 mm Hg. Art., then slightly open the valve screw gauge, carefully listening to the sounds. As soon as the first portion of the blood pass through the narrowed lumen of the blood vessel, you will hear the sound - the sound will be the first to characterize the level of arterial systolic pressure, and the moment the sound of extinction -. Diastolic pressure after measuring heart rate and blood pressure at rest is carried out functional tests Martine. To do this, the subject must do 20 sit-ups in 30 seconds. After the load is measured blood pressure and pulse on the 1, 2, 3, 4, 5-minute recovery. The source and the data are entered into the table 10 and determines the type of the reaction. When a good functional condition, the heart rate after exercise is increased, but no higher than 1 78-110 beats per minute, systolic pressure to 120-140 mm Hg, diastolic pressure can be reduced to 5 mm Hg. .. Art, recovery rates occurs in 2-5 minutes The following types of reactions to the exercise: 1. Normotensive reaction - it is moderate, appropriate physical exercise increase heart rate, systolic blood pressure, a slight decrease in diastolic blood pressure, and rapid recovery. 2. Hypertensive reaction - a significant increase in systolic blood pressure with an increase in heart rate to 170-180 beats per minute 1. Such a reaction can be when physical fatigue, on average, the elderly, or with hypertension. Table 10 Indicators of the cardiovascular system in a functional assay Indicator In Therefore something after physical pressure systolic (ADS) Blood pressure diastolic (ADD) The heart rate (HR), Pulse pressure (PP), systolic volume (CO) Minute volume of blood (IOC) 3. Hypotonic reaction - a slight increase in systolic blood pressure with a significant increase in pulse rate
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