transcranial doppler nursing responsibilities

The results of this study suggest a small, unexpected increase in resistance of the intracranial circulation following a meal in elderly people with postprandial hypotension. There were no significant changes in blood pressure, blood flow velocity, and pulsatility index during a control study conducted with four subjects under identical conditions but without a meal.

The pulsatility index (end diastolic to peak systolic amplitude divided by mean velocity) increased significantly (P < 0.05, ANOVA) between 30 and 55 minutes after the meal, suggesting increased arteriolar resistance.

Systolic, diastolic, and mean arterial blood pressure declined significantly from baseline between 30 and 55 minutes after the meal (P < 0.05, ANOVA) however, maximum and mean blood flow velocity did not change. Heart rate, blood pressure, and blood flow velocity in the middle cerebral artery by transcranial Doppler recording, before the test meal and at 5-minute intervals for 60 minutes afterwards. Three subjects had a history of syncope.Ī 725-bed academic long-term care facility. Ten elderly institutionalized subjects (4 women, 6 men, mean age 84.9 years). Time series, ie, post-intervention compared to pre-intervention with no-intervention controls. The sound waves go through your body and bounce off the area being studied (in. A wand, called a transducer, is moved over the area being tested. The gel helps the sound waves get into your tissues. The aim of the present study was to evaluate whether alterations in postprandial hemodynamics in the elderly were associated with changes in cerebral perfusion assessed by transcranial Doppler ultrasonography. The technician applies a water-based gel on your temples and eyelids, under your jaw, and at the base of your neck.

Transcranial doppler nursing responsibilities