A difference in brachial pressures, especially one significant enough to show a right measurement of 118 mmHg and a left measurement of 142 mmHg, can be indicative of vascular pathologies. Innominate stenosis specifically relates to a narrowing of the blood vessels that can lead to discrepancies in blood pressure readings in the arms due to differential blood flow.
When there is stenosis in the innominate artery, the blood flow to one arm can be compromised, while the other arm continues to receive normal or heightened blood flow. This results in a significant difference in the systolic blood pressure recorded in the affected arm compared to the unaffected arm. In this case, the lower pressure in the right arm (118 mmHg) could suggest reduced blood flow due to the presence of stenosis, while the left arm (142 mmHg) is still receiving adequate blood supply.
Other potential findings, such as systolic hypertension, would not typically result in a significant difference in pressures unless there was a systemic issue affecting only one arm. Additionally, subclavian steal syndrome involves retrograde flow in the vertebral artery due to blockage in the subclavian artery, and while it can cause differing arm pressures, it typically presents with additional neurological signs. Peripheral