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T Feldman

Publications and source records attributed to T Feldman.

115 records · Page 7Linked to original sources

IgG catabolism in anephric patients.

The catabolism of purified human 125I labelled IgG has been studied in patients with chronic renal failure, both nephrectomised and non-nephrectomised, on intermittent haemodialysis. In all patients the T 1/2 of IgG was the same as in normal controls, and using chromatographic separation on Sephadex G200, there was no evidence of alteration of molecular size as a result of dialysis. The results do not support the notion that the kidney is an important site of IgG catabolism in humans.

Adult↗

Optimal ECG monitoring during percutaneous transluminal coronary angioplasty of the left anterior descending artery.

During percutaneous transluminal coronary angioplasty (PTCA) frontal ECG leads are routinely monitored. The detection of ST segment deviation during the procedure is important for decisions regarding guiding catheter seating and the timing of balloon inflation and deflation. ST segment deviation appears on intracoronary electrograms in the absence of changes on the surface ECG in many patients, while the reverse is true in some individuals. When a precordial lead is employed, V5 or V6 is most commonly selected. The surface ECG leads most sensitive for monitoring ischemia during left anterior descending angioplasty are not known. In nine lead surface ECGs recorded during balloon inflation, a small degree of ST segment elevation occurred in leads I, aVL, and V5. Lead V2 demonstrated an increase in ST displacement from 0.0 +/- 0.03 mV to 0.29 +/- 0.25 mV during coronary occlusion (p less than 0.01). We conclude that if V5 or V6 is used as a single precordial lead, surface ECG alterations are easily overlooked. During left anterior descending occlusion the most sensitive surface lead is V2. Optimal ECG monitoring during PTCA in some cases should involve surface lead V2 or the intracoronary lead.

Adult↗

Gender differences and the outcome of interventions for acute coronary syndromes.

Differences in the overall mortality for acute infarction in women vs men have been appreciated for some time. Some of these differences are based on the age at the time of presentation of women compared with men. Excess mortality in women is most clear at the younger end of the age spectrum. More careful examination of the data has shown differences based on factors such as greater delays in presentation in women, real biases in the types of healthcare provider, and selection of diagnostic and therapeutic interventions for women compared with men. Recently, the mode of presentation has emerged as a major defining point. Women present more frequently with unstable angina or non-Q-wave infarction and have lesser mortality with these syndromes compared with men. Thus, the overall outcomes of acute coronary syndromes vary substantially from the differences in outcome for acute Q-wave infarction alone. New data have emerged regarding differences in treatment outcome for acute infarction. Women have derived lesser benefit from thrombolytic therapy and still respond to percutaneous transluminal coronary angioplasty more favorably than thrombolytic therapy for acute infarction. Women seem to have less benefit from stent use compared with angioplasty alone for acute infarction. Although increasing scrutiny has shed a great deal of light on some of these gender differences in outcomes from acute coronary syndromes, a real difference in mortality for younger women remains unexplained. The basis for real differences in outcome with the use of various therapies for acute infarction, such as thrombolysis and stent use, are also not well elucidated.

Angioplasty, Balloon, Coronary↗