Heart rate. A: average (90% predicuon interval) hR during dayume (blue). Average 95% ci nighчime hR (red). Reference values (10tH-90tH percenule of hR per age year) are displayed in green.
Heart rate. SPH Header ID SPH HR Nº Seq 3 Sample rates are subject to change in the final prototype. This packet includes the last calculated heart rate (current heart rate) and a sequence number as a timestamp.
Heart rate. Property Value Description sourceId MAC of Wristband It is the Bluetooth Mac address of the wristband sensorType hr Id of Heart Rate sensor Parameter Format/Unit Description hr Beats per minute Heart rate in beats per minute Timestamp 32-bit integer Time in UNIX Epoch (with milliseconds) seqNumer 8 bit integer Used to detect duplicated and lost frames
Heart rate. In the postoperative cardiac patient, monitoring the heart rate frequently is important. The heart rate is an indication of possible arrhythmia, shock, and pain. In adults counting a distal pulse for 15 seconds and multiplying by 4. If the pulse rate is irregular, count for a full one minute. In children, it is best to count the pulse rate at the apical impulse. Again, if the pulse is irregular, count for a full minute. Infants and children’s heart rate are more variable, this is normal. Adults are able to increase their cardiac output by both increasing their heart rate and also increasing contractility. Infants and children are only able to increase their heart rate. Respiratory Rate To measure the respiratory rate in adults, watch the chest rise and fall for 15 seconds, then multiply this by 4. This results in the number of breaths per minute. Or alternatively, for 30 seconds if the respiratory rate is not regular. Measuring the respiratory rate in a child requires a slightly different approach. Because of the infants and young children (<6 years) use the diaphragm as their primary breathing muscle, respirations are easiest to measure by watching the rise and fall of the abdomen. Additionally, because infants normally breathe irregularly, it is best to count respirations for one full minute. Another method for measuring respirations is to lightly rest one hand on the thorax of an infant or small child and count the feel of the rise and fall. Yet another method is to listen for inspiration with a stethoscope. All of these techniques are effective in measuring the respiratory rate in infants and small children. The different technique may work better in different patient situations, all are acceptable; and all should be done for a full minute. Blood Pressure One of the most commonly made errors in measuring blood pressure is choosing an inappropriately sized blood pressure cuff. If the cuff is too small, the blood pressure will read falsely high. And if the cuff is too large, it will read falsely low. The bladder of the cuff should cover about 40% of the upper arm. When the cuff is wrapped around the patient’s arm, the bladder length covers 80-100% of the arm’s circumference and 50-75% of the upper arm’s length. Later on in the summer we will talk more about what it could be an indication of when there is a discrepancy between an upper extremity blood pressure and a lower extremity blood pressure.
