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Biomedical subjects

R M Martinez

Publications and source records attributed to R M Martinez.

23 records · Page 2Linked to original sources
PubMedDate not supplied

Intramuscular onchocercoma. Case report.

Onchocerciasis is characterized by the presence of numerous microfilariae in the skin, formation of subcutaneous nodules and eye lesions that can lead to blindness. We present a case, rather uncommon in our environment, in which an incomplete life cycle of the parasite, led to a single intramuscular nodule. The clinical symptoms and histological features are described, together with the treatment, using Ivermectin.

Adult↗
PubMedDate not supplied

Who won't tell: predictors of refusal to report number of sex partners.

Data from 1475 respondents to a telephone survey are used to examine whether those who refused to report the number of their sex partners in the 12-month period prior to the interview are more likely to engage in HIV risk behaviours than those who did report this number. Logistic regression shows that refusal is associated with being single of low education (OR(adj) = 8.0, 95% CI 2.7-23.7), using condoms in the last year (OR(adj) = 4.2, 95% CI 1.6-11.1), self-reporting of HIV-risk behaviours (OR(adj) = 3.6, 95% CI 1.3-9.6), and being male (OR(adj) = 2.7, 95% CI 1.1-6.6). These associations apply only to a subsample of individuals who provided complete information for HIV risk and other related behaviours. Results from the total sample indicate that individuals in our study who did not report their number of partners are more likely to have characteristics that are compatible with a higher probability of HIV risk practices. This pattern of associations suggests that refusers are indeed at higher risk for HIV infection than those sexually active individuals who did report the number of partners.

Adolescent↗
PubMedDate not supplied

Cutaneous circulation in Raynaud's phenomenon during emotional stress. A morphological and functional study using capillaroscopy and laser-Doppler.

In order to assess the effects of emotional stress on the cutaneous microcirculation in patients suffering from Raynaud's phenomenon (RP) a group of 18 patients with this pathology and 16 healthy control subjects underwent an "arithmetical test". The microcirculatory response was examined using a laser Doppler apparatus. The results obtained showed a constantly reduced flow during mental stress in normal subjects; in the RP group it was possible to observe: a first subgroup with a reduced flow similar to that seen in normal subjects, and a second subgroup with a paradoxically increased flow. It is likely that the normal vasoconstrictor response is the expression of the functional impairment of the microcirculation alone (primary RP), whereas vasodilatation in response to mental stress is a sign, of the organic development of the disease right from an early stage.

Female↗