Peripheral Vasoconstriction Associated with Hyperpotassemia

Peripheral vasoconstriction associated with hyperpotassemia.

• Experimental conditions have been described in which constriction of the small blood vessels in the cheek pouch of the golden hamster was found in association with increased serum potassium levels. The arterioles of adrenalectomized hamsters became progressively constricted, starting three to four days after operation until death. An increase in serum potassium occurred during the same period...

Hyperpotassemia and hypercalcemia.

T HIS 74-YEAR-OLD W H I T E MAN HAD carcinoma of the bladder for four years. A few days prior to this electrocardiogram, he showed signs further substantiated by laboratory determinations consistent with urinary tract obstnrction. On the day this electrocardiogram was taken, the following laboratory findings were reported: potassium 7.4 mEq/L.; calcium 12 mg. per cent; CO, 23 mEq/L.; albumin 2....

Peripheral vasoconstriction after open-heart surgery.

Postural hypocapnic hyperventilation is associated with enhanced peripheral vasoconstriction in postural tachycardia syndrome with normal supine blood flow.

Previous investigations have demonstrated a subset of postural tachycardia syndrome (POTS) patients characterized by normal peripheral resistance and blood volume while supine but thoracic hypovolemia and splanchnic blood pooling while upright secondary to splanchnic hyperemia. Such "normal-flow" POTS patients often demonstrate hypocapnia during orthostatic stress. We studied 20 POTS patients (...

Incidence of Phlebitis Associated With Peripheral Venous Catheter of Patients With COVID-19