"That's about it," Joseph concluded, "Blood pressure is directly related to diseases such as heart disease and stroke. If the blood pressure is too high, it must be promptly intervened..."
All the doctors as well as the biologists widened their eyes. They were hearing for the first time about pressure issues in blood circulation and its close relation to health.
Joseph looked at the crowd: "We can measure blood pressure by compressing the artery - when the artery under pressure cannot pulse, it means the blood pressure is below that pressure value.
"Then gradually reduce the pressure, at the moment the artery starts pulsing again, the pressure value is the blood pressure..."
His understanding of measuring blood pressure was shallow; he could only describe the appearance of the sphygmomanometer from memory.
"Use a hollow air cushion to grip the arm, then inflate it to increase pressure. As for measuring the pressure... it should be with a column of mercury...
