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W A Norcross

Publications and source records attributed to W A Norcross.

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Attitude to Death

Arteriovenous fistula. A potential complication of venipuncture.

We describe a very unusual complication of venipuncture: an arteriovenous fistula between the brachial artery and median cubital vein. The clinical presentation and treatment of arteriovenous fistulas and methods of preventing this complication are reviewed.

Adult

Effect of influenza vaccine in patients receiving long-term warfarin therapy.

The effect of influenza vaccine on anticoagulant response in 12 patients receiving long-term warfarin therapy was studied. Study criteria required that all patients have stable prothrombin times and be on stable warfarin dosages before immunization. Patients were immunized with 1982-83 trivalent influenza vaccine (subvirion), types A and B 0.5 mL i.m. on day 0 of the study. Prothrombin times were determined on days--7, 0, 2, 5, 7, 14, and 21, and results were reported as ratios with control values. Influenza immunization produced a small but significant increase in the prothrombin-time ratio. Before immunization the mean ratio was 1.68, and the mean ratio increased to 1.81 after immunization. The maximal increase occurred on day 14 and represented a 7.6% increase over the baseline (day 0) value. The prothrombin-time ratio was not influenced by warfarin sodium dosage (less than or equal to 5 mg/day versus greater than 5 mg/day) or by the sex of the patient. During the 1984-85 influenza season, an additional 26 patients were immunized with the 1984-85 trivalent influenza vaccine (subvirion), types A and B. The prothrombin-time ratio on days 0 and 14 were not significantly different in these patients. Although the administration of influenza vaccine to patients receiving long-term treatment with warfarin appears to be safe, patients should be monitored after immunization for possible increases in anticoagulant response.

Aged

Women's attitudes toward screening mammography.

Although mammography has been proven an effective tool in screening asymptomatic women, it has been underused because of poor physician and patient compliance. At a university mammography clinic in Southern California, we administered questionnaires to 381 asymptomatic women to determine what women perceived to be incentives and deterrents to mammography. A factor analysis grouped the incentives into five factors, in decreasing significance: "doctor's recommendation," "personal experience," "media," "others' recommendation," and "breast symptoms." Similarly, we grouped the deterrents according to five factors, in decreasing significance: "cost," "fear of medical intervention," "unnecessary screening," "time demands," and "transportation difficulties." We compared the relative significance of these incentive and deterrent factors for demographics, aspects of the doctor-patient relationship, and individual characteristics. Younger, married women rated incentives, particularly "personal experience," higher and deterrents lower in general than older, unmarried women who had more concerns about "cost." However, all demographic groups rated "doctor's recommendation" as the highest incentive, and we found few differences among races or socioeconomic status for any factor. Women whose physicians had initiated the discussion of mammography viewed the doctor's recommendation as a greater incentive than women who had to initiate the discussion about mammography. Women under the care of gynecologists saw the doctor's recommendation as a greater incentive than women under any other specialists' care. Gynecologists initiated the discussion of mammography and recommended screening more often than other specialists. Women with the following individual characteristics identified more incentives to mammography: knew someone with breast or other cancer, estimated themselves to be at high risk for breast cancer, or had at least one previous mammogram.(ABSTRACT TRUNCATED AT 250 WORDS)

Age Factors