How to Make Your Blood Pressure Monitor More Accurate

Blood pressure watch

1. The sphygmomanometer should be checked regularly to maintain its accuracy, and should be placed stably, not inverted or shaken.
2. Do not inflate too high or too violently, exhaust the air in the cuff after use, and roll it up. The rubber ball must be placed in a fixed position in the box to prevent the glass from breaking. If there is a switch under the mercury column, the switch should be turned off after use. If there are air bubbles in the mercury column, it should be adjusted or repaired, and it is not allowed to measure with air bubbles.
3. If the sphygmomanometer is found to be unclear or abnormal, it should be re-measured. Make the mercury column drop to "0" point and test again, and measure both upper arms for comparison when desired.
4. Those who need to closely observe blood pressure should try to do four set: set time, set location, set body position, set sphygmomanometer.
5. For hemiplegic patients, it should be measured on the unaffected arm.
6. Prevent the error caused by the sphygmomanometer itself: if the mercury is insufficient, the measured blood pressure is low. The ventilation holes at the upper end of the mercury column are blocked, making it difficult for air to enter and exit, resulting in low systolic pressure and high diastolic pressure.
7. In order to avoid the influence of blood flow, when measuring blood pressure, the "0" point of the sphygmomanometer should be at the same level as the brachial artery and the heart. In the sitting position, the brachial artery is level with the fourth costal cartilage; in the supine position, it is at the same level as the midaxillary line. flat. If the limb is too high, the measured blood pressure is often low, and if the position is too low, the measured blood pressure is high.