When diagnosing preeclampsia, hypertension is defined as a systolic blood pressure of 140 mmHg or greater or diastolic blood pressure of 90 mmHg or greater.

在诊断子痫前期时，高血压的定义为收缩压大于等于140毫米汞柱或舒张压大于等于90毫米汞柱。

Blood pressure is recorded in millimeters of mercury (mmHg) with systolic pressure written first, followed by diastolic pressure.

血压以毫米汞柱（mmHg）记录，先记录收缩压，然后记录舒张压。

When this happens, venous blood accumulates in the hepatic portal system, causing pressure to rise above 12 mmHg, which defines portal hypertension.

当这种情况发生时，静脉血会在肝门脉系统里蓄积，导致压力上升到12mHg以上，这就是门静脉高压症的定义。

Elevated systolic blood pressure is considered between 120 and 129 mmHg and less than 80 mmHg on the diastolic side.

收缩期血压升高应该在120到129mmHg之间，舒张期血压则是应该在小于80mmHg的区间内。

All right, as a quick recap, portal hypertension is when the pressure in the hepatic portal system is greater than 12 mmHg.

得！快速回顾一下：门静脉高压症是指肝门系统压力大于12mmHg。

The round ligament stay shut because pressures in the portal venous system and the systemic venous system are the same under 12 mmHg.

圆韧带保持关闭状态，这是因为门静脉系统里的血压和体静脉系统的血压都同样是低于12mmHg的。

In severe preeclampsia, systolic blood pressure can be 160 mmHg or greater and diastolic blood pressure can be 110 mmHg or greater.

重度子痫前期患者的收缩压可达到160毫米汞柱以上，舒张压达到110毫米汞柱以上。

Therefore, PCO2 in the blood that is leaving the capillary is 45 mmHg.

因此，离开毛细管的血液中的PCO2为45 mmHg。

As you can see in the picture above, the partial pressure of carbon dioxide in the alveolar air is about 40 mmHg.

如上图所示，肺泡空气中二氧化碳的分压约为40 mmHg。

Therefore, the PO2 in the blood drops to 40 mmHg as the blood flows through the capillary.

因此，当血液流过毛细血管时，血液中的PO2下降到40 mmHg。