PubMed Health⌕ Search

Biomedical subjects

J A Neto

Publications and source records attributed to J A Neto.

10 recordsLinked to original sources
PubMed1975

Abnormal heart rate responses during exercise in patients with Chagas' disease.

Normal subjects and cardiac chagasic patients without previous history of congestive failure or actual evidences of cardiac decompensation were exercised on a treadmill or a bicycle ergometer. Patients with less than the expected increase in heart rate during exercise were found to exhibit also an abnormal heart rate response to pharmacologic blockade and acute alterations in systemic vascular resistance. These results are in agreement with previous observations showing neuronal degeneration and autonomic impairment in chronic Chagas' heart disease.

Chagas Disease↗
PubMed1975

Postural reflexes in chronic Chagas's heart disease. Heart rate and arterial pressure responses.

Studies of heart rate and blood pressure responses to 70 degrees head-up tilt and 30 degrees head-down tilt were conducted in normal subjects and in chronic cardiac chagasic patients without past or present cardiac decompensation. During steady state of tilt, heart rate alterations were less marked in the chagasic than in the control group. Vasodepressor syncope supervened in three cardiac chagasic patients, two of whom showed the distinctive feature of hypotension without reflex bradycardia. In these patients, vagal control of cardiac rate could not be demonstrated either following a full blocking dose of atropine or during sudden elevation of systemic arterial blood pressure. These results are interpreted in the context of the pathologic and functional derangements of autonomic control which occur in Chagas' heart disease.

Adult↗
PubMedDate not supplied

Duhamel procedure for sigmoid cancer.

A description is given of the advantages of the Duhamel technique over that carried out by colorectal anastomosis at the level of the pelvis. The anastomosis is performed at the level of the perineum. Ten patients with cancer of the colon were operated and it was determined that there was no tumoral relapse of the residual ampulla. There were no complications and this technique can be used as a substitute for Hartmann's.

Evaluation Studies as Topic↗