Tag: Oxygen delivery

Unlike traditional oxygen masks that require multiple devices or flow adjustments for different oxygen levels, an OxyMask can deliver a broad range of oxygen concentrations (24–90% FiO2) with a single mask. A key feature is the flexible and wide flow rate of oxygen in oxy mask, which typically ranges from 1 to 15+ L/min.

In critical care medicine, the balance between oxygen delivery ($DO_2$) and oxygen consumption ($VO_2$) is a key indicator of tissue perfusion. The administration of dobutamine, a potent inotropic agent, typically leads to an increase in mixed venous oxygen saturation (SvO2) by improving cardiac output and enhancing systemic oxygen delivery.

In patients with severe heart failure, dobutamine has been shown to increase mixed venous oxygen saturation (SvO2) from an average of 58.7% to 72.2% [1.2.1]. But **does dobutamine increase SvO2** in all clinical scenarios, and what is the underlying mechanism?