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Biomedical subjects

H Schwartz

Publications and source records attributed to H Schwartz.

At least 109 records · Page 6Linked to original sources
PubMed1981

Hypnosis in high risk ophthalmic surgery.

Hypnosis is an effective tool in many areas of medicine and surgery. The exacting demands of ophthalmic surgery require good patient cooperation and strict adherence to treatment regimens. Multisystemic diseases compounded by the physiological stress of surgery make it essential that already strained homeostatic mechanisms are interfered with minimally. The cases presented in this report illustrate the beneficial use of hypnosis in the treatment of several high risk patients in unusual situations.

Adult↗
PubMed1980

The metabolism of T4 and T3 in cultured chick-embryo heart cells.

Thyroxine (T4) and tri-iodothyronine (T3) were metabolized in cultured chick-embryo heart cells via inner-ring de-iodination and O-sulfation. The products of T3 metabolism were 3,3'T2, 3'T1, and sulfated esters of T3 and 3,3'T2. The major product of T4 degradation was 3,3',5'-T3 (rT3). ONo T3 was produced from T4. Propylthioracil inhibited the metabolism of T3. Pretreatment of cultures with T3 or T4 enhanced the metabolism of both hormones; actinomycin D and cycloheximide inhibited the stimulatory effect of T3. The stimulation by T3 was linearly related to the log of the concentration of T3 in cells grown in normal chick serum or in cells grown in dehormonized serum. These results suggest that thyroid hormones induced an increased synthesis of the enzymes involved in their metabolism and therefore may regulate their own disposal rate.

Animals↗
PubMed1980

Peripheral proliferative retinopathy without oxygen therapy in a full-term infant.

A 2,948-g full-term male infant, the product of an uncomplicated pregnancy, developed fundus changes consistent with retrolental fibroplasia in the absence of supplemental oxygen therapy. He had no associated illnesses or congenital anomalies, and had not received exchange transfusions. There was no family history of ocular disease. Changes similar to those of retrolental fibroplasia do occasionally occur in fullterm infants who have had no supplemental oxygen therapy. A relative hyperoxia caused by the increase in arterial oxygen saturation occurring at birth is one possible explanation for these events. This rise, plus susceptibility factors apart from prematurity, may account for these unusual cases. Additionally, these cases may represent sporadic examples of familial exudative vitreoretinopathy.

Age Factors↗
PubMed1980

Echocardiographic features of cardiac compression by mediastinal pancreatic pseudocyst.

Echocardiogram of a patient who had retrocardiac compression by pancreatic pseudocyst is described both before and after drainage. Mass of echoes behind the anterior leaflet of the mitral valve and its disappearance after drainage of a pseudocyst have not been described in available literature. These findings mimic left atrial myxoma, and we discuss their differentiation in this case report.

Drainage↗
PubMed1979

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PubMed1979

Mydriatic effect of anticholinergic drugs used during reversal of nondepolarizing muscle relaxants.

Large doses of anticholinergic drugs (atropine, glycopyrrolate) produced mydriasis in a group of adults with no eye abnormalities except strabismus, though the usual intramuscular and intravenous doses of these drugs do not have this tendency. Such large doses are often given intravenously during general anesthesia to prevent the side effects of neostigmine methylsulfate, which is used to reverse the effect of nondepolarizing muscle relaxants. Neostigmine methylsulfate (Prostigmin) reduced the mydriatic effect when given intravenously in conjunction with atropine or glycopyrrolate. Mydriasis was more likely to occur in lightly pigmented eyes than in eyes with dark irides. Pilocarpine eyedrops instilled at the beginning of anesthesia caused miosis that persisted after the large intravenous doses of atropine or glycopyrrolate were given. To prevent an attack of acute angle-closure glaucoma in any patient who is to receive large doses of anticholinergic drugs during general anesthesia, miotic drug therapy should be continued before, during, and after anesthesia at the same frequency as when awake.

Adolescent↗
PubMed1979

An unusual organism causing orbital cellulitis.

Bacterial orbital cellulitis is a feared complication of paranasal sinus infection. Staphylococcus and Streptococcus species are the commoner pathogens involved in these cases. However, anaerobic bacteria and unusual Gram-negative organisms should be suspected as well. We treated a case of bacterial orbital cellulitis due to foci of infected paranasal sinuses caused by Eikenella corrodens, a Gram-negative rod. The patient was managed with intensive antibiotic coverage and surgical intervention.

Adult↗
PubMed1978

Antiemetic effect of droperidol after ophthalmic surgery.

Postoperative nausea with emesis is an undesirable side effect of general anesthesia in patients who have undergone ophthalmic surgery. The antiemetic effect of intravenous droperidol (Inapsine) was measured in a double-blind, controlled study of 78 patients undergoing general (enflurane [Ethrane]) anesthesia for a variety of ophthalmic procedures. There was a significant difference in the incidence of postoperative nausea and/or emesis in the droperidol-treated group, 13 of 78 (16%) as compared with the control population (37 of 87 [42%]). No complications of droperidol administration were observed. Droperidol may be an effective antiemetic drug if used prophylactically in patients who receive general anesthesia for ophthalmic surgery.

Adolescent↗
PubMed1978

The definition of transcription units for mRNA.

The detailed analysis of TUs with purified Ad2 DNA and the analysis of TU size for the bulk HeLa cell hnRNA compared to the size of mRNA of infected and uninfected cells supports the conclusion that mRNA in mammalian cells is generally derived by the processing of primary transcripts. In the context of this volume, these results indicate that the RNA transcription products of chromatin which are related to mRNA are longer than the mRNA itself. Proper functioning of chromatin in vitro must eventually take these results into account.

Adenoviruses, Human↗