Biomedical subjects

A P Best

Publications and source records attributed to A P Best.

3 recordsLinked to original sources

PubMed1983

Conflicts associated with physicians' pregnancies.

The authors surveyed clinical faculty and residents in one medical school to assess perceived stress related to working with a pregnant colleague. The majority acknowledged stress to themselves and their departments yet indicated that pregnancy had a humanizing effect on the work environment. Although most felt that the pregnant physician maintained her professional interests and efficiency, one-third reported women of childbearing age to be a hiring risk. A higher percentage of faculty than residents favored special considerations for pregnant physicians. The authors explore age, sex, and departmental differences and suggest that pregnancy in a physician generates conflicts in her colleagues.

Adult↗

PubMed1978

[Morphology of live and dead spermatozoa of stallions (author's transl)].

Examination of 539 ejaculates of stallions of various breeds showed that approximately 60 per cent of the spermatozoa were completely normal morphologically. Of these morphologically normal spermatozoa, 13 per cent were dead. The total proportion of live spermatozoa was 75 per cent, 32 per cent being obviously abnormal (22 per cent of live and 10 per cent of dead spermatozoa). Separated heads (normal as well as abnormal) were significantly more common among dead spermatozoa. Protoplasmic droplets (both at the neck and at the end of the middle piece) were mainly present in live spermatozoa. As the stallion grow older, the total proportion of abnormal spermatozoa shows only a slight increase. Moreover, this increase is mainly due to an increase in abnormal dead spermatozoa as the live ones show a reduction of abnormal forms. Thus, the proportions of abnormal and separated heads are reduced in live spermatozoa, whereas separated heads show a marked increase in dead spermatozoa. The total number of abnormal spermatozoa is reduced by an average proportion of 4 per cent in second ejaculates, whereas it increases by 8 per cent in live (unstained) spermatozoa.

Age Factors↗

PubMed1976

[The most suitable time for mating of the bitch (author's transl)].

The literature on the oestrous cycle in the bitch is briefly reviewed. 283 bitches were studied in order to develop a procedure by which to determine the time of ovulation, i.e., the optimum time for mating or insemination. Examination of vaginal smears, clinical observations of the bitch and sugar tests of the vaginal discharge showed that the sugar test is the most satisfactory method in dog-breeding and, particularly, that it is simple to use. The mean conception rate of the bitches which were inseminated was 71 per cent.

Animals↗