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Biomedical subjects

Y Wolf

Publications and source records attributed to Y Wolf.

48 records · Page 3Linked to original sources
PubMed1995

Impetigo herpetiformis during pregnancy: case report and review of the literature.

A case of impetigo herpetiformis in pregnancy is reported together with a review of the literature. The patient was a 25-year-old primigravida with pregnancy-induced hypertension (PIH). At 35 weeks' gestation, the patient developed a severely pruritic pustular rash with fever and leukocytosis. The skin of the affected areas was biopsied and showed intraepidermal pustules with a neutrophilic infiltrate. Treatment commenced with intravenous fluids, oral prednisone, and steroid creams. Labor was induced, and a normal delivery of a healthy infant was effected, following which the patient's condition improved rapidly. The clinical and laboratory features were typical of impetigo herpetiformis as described in the literature. Impetigo herpetiformis is a rare, potentially serious skin disorder occurring particularly during pregnancy, and must be diagnosed early to allow prompt, aggressive treatment.

Adult↗
PubMed1995

Personal and situational factors in drug use as perceived by kibbutz youth.

Sixteen 17-year-old kibbutz members, seven of them smokers, and nine nonsmokers of hashish, assessed the probability that a young person of similar background would use drugs. Two sources of information were manipulated bifactorially: personal predisposition (curiosity, risk-taking, and existential meaning) and the level of group pressure to smoke hashish. It was found that hashish smokers assigned meaningful importance to a combined influence of the two factors, while the nonsmokers considered only group pressure to be important. A tool based on the measurement method examined in this study is proposed for predicting the probability of drug use among adolescents.

Adolescent↗
PubMed1994

Cystadenofibroma of the ovary in young women.

Cystadenofibroma of the ovary, a relatively rare benign tumor, usually appears during the fourth and fifth decades. This tumor has malignant ultrasonographic features and may also macroscopically appear as malignant during surgery. Since this tumor has a rare malignant potential, it is well-advised to be aware of the possibility of a cystadenofibroma before selecting an aggressive surgical approach in young patients. We present five cases of young patients with cystadenofibromas of the ovary.

Adenofibroma↗
PubMed1994

The etiology of intimal hyperplasia.

Injury of an arterial wall results in the growth of a neointima which can cause significant luminal narrowing. Current theories do not adequately explain the experimental and clinical data. We propose the hypothesis that some substance produced by the media is inhibitory to smooth muscle cell proliferation. This substance cannot cross the normal intima. Following an injury which removes the intima this substance quickly diffuses out of the arterial wall into the blood, its concentration in the arterial wall falls and proliferation of smooth muscle cells begins. Later, as the arterial wall volume increases and the lumen (and, thus, area for diffusion) decreases, the substance returns to inhibitory levels and intimal hyperplasia ceases.

Animals↗
PubMed1994

Pseudo-sinusoidal heart rate associated with major cardiac anomalies.

Pseudo-sinusoidal fetal heart rate (pseudo-SHR) pattern, characterised by intermittent episodes of sinusoidal heart rate and normal fetal heart rate (FHR), is considered benign although its pathophysiologic mechanism remains obscure. We present a case of pseudo-SHR episodes throughout all stages of labor associated with multiple major cardiac anomalies. We suggest that when confronted with repeated episodes of pseudo-SHR pattern, the possibility of an underlying cardiac anomaly should be considered.

Abnormalities, Multiple↗
PubMed1993

[Pelvic inflammatory disease in pregnancy].

Although pelvic inflammatory disease (PID) is a common complaint in young, fertile women, it is quite rare during pregnancy. Clinically it is characterized by abdominal pain, sometimes presenting as an acute abdomen with fever. Since PID has no characteristic clinical or laboratory findings, and is rare during pregnancy, it is understandable why the diagnosis is missed in most cases, and the patient is treated as an abdominal emergency. Since surgery during pregnancy in the presence of an infection leads to abortion in most cases, accurate diagnosis and appropriate treatment is of the greatest importance. A case of PID during pregnancy is presented.

Abdomen, Acute↗
PubMed1989

[Surgical treatment of chronic mesenteric ischemia].

A 44-year-old woman with chronic abdominal pain and weight loss is presented. 1 year after onset of symptoms and following multiple diagnostic procedures, angiography revealed high grade stenosis of the celiac and superior mesenteric arteries at their origins. Bypass grafts of Goretex were implanted from the infrarenal aorta to both arteries beyond the narrowed segments. 1 year after surgery the patient has regained her weight and is feeling well.

Adult↗
PubMed1989

Dysphagia in a child with aggressive fibromatosis of the esophagus.

A case of a girl who developed severe dysphagia from an aggressive fibromatosis involving the cervical esophagus is reported. A 3 x 4 cm unencapsulated fibrous tumor was completely excised with the involved esophageal wall. The esophageal defect was bridged by an inverted skin tube with good functional and cosmetic results. Eight years later the patient is disease-free. Primary radical excision is the treatment of choice of aggressive fibromatosis.

Child, Preschool↗
PubMed1987

Perceptual and memorial constructs in children's judgments of quantity: a law of across-representation invariance.

Children at three different ages made judgments of physically presented (perceptual estimation) or symbolically represented (memorial estimation) rectangles. Height and width were integrated according to different, age-dependent algebraic rules. Memorial data obeyed the same integration rules that operated in the original perceptual judgments even when younger children and older children used completely different combination models. Valuation operations were the same in perception and memory for the youngest group (6-year-olds) but became discriminably different at older ages (for the 8- and 10-year olds). Three additional experiments on judgments of volume, liquid quantity, and visual length yielded strong cross-validation support for the general invariance claim (with respect to integration rule theory) but less strong support for the specific invariance claim (with respect to valuation function for the 6-year-old subjects). Results are interpreted as demonstrating lawful and long-enduring ecological constraints on internal representation.

Attention↗
PubMed1987

Non-operative management of traumatized spleen in children: the role of open abdominal tap.

Experience with non-operative management of paediatric splenic trauma in 12 children, and current treatment protocol are presented. Splenic injury was confirmed in all instances by scintiscan. Under close observation no evidence of rebleeding was found. In one patient with persistent fever, peritoneal irritation and leukocytosis open abdominal tap was performed in order to eliminate other intra-abdominal injury and conservative treatment continued. Average stay in hospital was 11 days. Patients recovered fully by six weeks and repeat scintiscan at three months were normal in 9 patients and greatly improved in the other three. Most children sustaining splenic injury may be non-operatively managed. In a special subgroup of moderate bleeders open abdominal tap may increase the safety of this approach and reduce the number of superfluous laparotomies to a minimum.

Adolescent↗
PubMed1985

Integration of stimulus dimensions in perception and memory: composition rules and psychophysical relations.

A series of five experiments used the method of magnitude estimation to assess how height and width are integrated in perceptual and in memorial judgments of area. Separate groups of subjects estimated the areas of perceived or remembered rectangles produced by a symmetrical 4 X 4 factorial design of height and width. Additional independent groups of observers made area judgments, based on special mixes of perceptual and memorial information referring to the height and width components of the to-be-judged rectangles. Both perceptual and memory data obeyed the bilinear interaction prediction of the normative multiplicative model. The relation between perceived and actual area as well as the relation between remembered and actual area could both be described by a compressive power function, with the exponent being reliably smaller for remembered than for perceived area. These results seem to imply a principle of integration rule invariance across perceptual and memorial estimates of a given set of stimuli, in conjunction with characteristically different valuation operations.

Adult↗