heart axis造句

• The electrical heart axis can be estimated from the ECG by using quadrant method or degree method.
• The electrical heart axis can be estimated from the ECG by using the quadrant method or degree method.
• If lead b is positive, the electrical heart axis can be estimated to lie within the quadrant between axis of lead a and lead b.
• On the other hand, if lead I is negative ( translation to 180?) and lead aVF is positive, the electrical heart axis is estimated to fall in the right lower quadrant suggesting a right axis deviation.
• If lead I is positive ( translating to 0?on the hexaxial reference system ) and lead II is positive ( translating to 60?), the electrical heart axis is estimated to fall in the left lower quadrant within the normal range.
• If lead I is positive ( translating to 0?on the hexaxial reference system ) and lead aVF is positive ( translating to 90?), the electrical heart axis is estimated to fall in the left lower quadrant within the normal range.
• On the other hand, as shown in Figure 2, if lead I is negative ( translating to 180?) and lead II is positive, the electrical heart axis is estimated to fall in the right lower quadrant suggesting a right axis deviation.