Arterial $\mathrm{pH}$ of 7.52, arterial $\mathrm{PCO}_{2}$ of $26 \mathrm{~mm} \mathrm{Hg}$, and tingling and numbness in the feet and hands would be observed in a

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[Chapter 5, IX D 4; Table 5.9]. The blood values are consistent with acute respiratory alkalosis from hysterical hyperventilation. The tingling and numbness are symptoms of a reduction in serum ionized $\left[\mathrm{Ca}^{2+}\right]$ that occurs secondary to alkalosis. Because of the reduction in $\left[\mathrm{H}^{+}\right]$, fewer $\mathrm{H}^{+}$ions will bind to negatively charged sites on plasma proteins, and more $\mathrm{Ca}^{2+}$ binds (decreasing the free ionized $\left[\mathrm{Ca}^{2+}\right]$ ).

Arterial pH\mathrm{pH}pH Of 752, Arterial PCO2\mathrm{PCO}_{2}PCO2​ Of 26 mmHg26 \mathrm{~mm} \mathrm{Hg}26 mmHg , and Tingling and Numbness in the Feet and Hands

Arterial $\mathrm{pH}$ Of 752, Arterial $\mathrm{PCO}_{2}$ Of $26 \mathrm{~mm} \mathrm{Hg}$ , and Tingling and Numbness in the Feet and Hands