Search PubMed⌕ Search

Biomedical subjects

B Dennison

Publications and source records attributed to B Dennison.

13 recordsLinked to original sources

Insights from a large rural population laboratory. Health census '89 and '99.

PURPOSE: Data are limited on health status behaviors and use of health services for rural residents. Yet rural areas now have higher rates of chronic diseases, such as coronary heart disease, than urban areas.METHODS: A population laboratory (Health Census) was established in rural Central NY (Otsego County) to study these variables in this population. HC '89 was a door-to-door enumeration of all permanent households in the country. In 1989, 44,500 adults in 18,000 households provided data on individual health screenings, cancer and cardiovascular risk factors, health behaviors, chronic disease, access to care, preventive services use, health insurance and emergency department utilization. Data collection for HC '99 will identify 10-year trends; it also includes baseline data for children. Also, households in six surrounding rural counties (N = 10,000) were sampled; cost benefits of different survey methods were assessed. Questions about perceived health status, and special health and pediatric preventive care needs were included. After 10 years of social change, many limitations of traditional survey methods became apparent; much more varied and frequent types of follow-up were needed to achieve adequate response rates.RESULTS: The HC '89 final response rate was 86%. There were significant socioeconomic gradients in use of preventive services (blood pressure screening, rectal exams, mammograms and Pap smears). Adults without health insurance or Medicaid had much lower utilization rates of screening tests and higher rates of cigarette smoking and obesity. Several community intervention programs were implemented as a result of HC '89. HC '99 provides additional analyses to examine change in preventive service use, self-reported chronic disease, and health services use; it will likely verify the persistence of socioeconomic gradients. Response rates are similar to '89, but achieved only with more intensive reinforcement.CONCLUSIONS: HC '89 confirmed a lag in positive health indices in rural populations in Central NY. Both newer methodologies now needed and results of HC '99 will serve as guides for smaller rural counties to develop affordable local health surveys and plan intervention strategies.

Journal Article↗

Feasibility of named antenatal HIV screening in an inner city population.

The object of this study was to assess the resource use, feasibility, uptake and consumers' perspective of introducing routine named human immunodeficiency virus (HIV) testing into an inner city hospital antenatal clinic (St Thomas Hospital, part of Guy's and St Thomas Hospital Trust). Following the introduction of a new service offering routine named HIV testing at booking appointments, the length of the appointments were recorded over a three-month period and compared with appointment lengths in the previously existing service. Women being offered routine named HIV testing were asked to complete a questionnaire before and after their appointment to assess knowledge, attitudes and acceptability of HIV testing. Subjects were three-hundred-and-eighty-one pregnant women attending the antenatal clinic for their booking appointment. There was no significant difference in the length of the booking appointments following the introduction of offering routine named HIV testing. One-hundred-and-fifty-eight women (42%) consented to testing with no positive results detected. There was a significant rise in the uptake of the test over the three-month period. No other variables (demographics, perceived risk, having read the leaflet) were predictive of uptake. Anxiety scores were significantly less after the booking appointment. Routine named HIV testing was feasibly introduced into a hospital antenatal clinic with minimum resource implications. Further study is needed to monitor the ongoing uptake rate and identification of HIV-positive women before a decision can be made as to the long-term benefit of this new service. Women considered it acceptable to be offered the HIV test and were less anxious after their appointments.

Adult↗

Mechanism of extension of spinal anaesthesia by extradural injection of local anaesthetic.

We have examined the effect of extradual injection of 0.5% bupivacaine or normal saline on the progression of spinal anaesthesia in 28 patients undergoing Caesearean section. Three groups were studied. Subarachnoid anaesthesia was established in all patients. Group A (n = 10), the control, received no extradural injection for 20 min. Group B (n = 9) received extradural bupivacaine 10 ml and group C (n = 9) received extradual saline 10 ml 5 min after the subarachnoid injection. Sensory levels were compared at 5-min intervals and extension of the block was found to be similar in groups B and C and significantly faster than the control (P < 0.05). The quality of anaesthesia and incidence of adverse effects was similar for all three groups. We conclude that the mechanism of extension of spinal anaesthesia by extradural injection of local anaesthesia is largely a volume effect.

Adult↗

Epidural test dose.

Explore the source record for details and available documents.

Anesthesia, Epidural↗

Excessive dose requirements of local anaesthetic for epidural analgesia. How far should an epidural catheter be inserted?

On two separate occasions, a 78-year-old obese man suffering from congestive cardiac failure and peripheral vascular disease, required epidural anaesthesia for surgery to his leg. The dosage requirement on the first occasion was large and much greater than on the second occasion. Reasons for the difference in dosage are discussed. We suggest an epidural catheter should be inserted 3 cm into the epidural space.

Aged↗

Complications associated with a narrow bore nasogastric tube.

The use of a new narrow bore nasogastric feeding tube with stylet has resulted in two cases of misplacement with traumatic laceration of the visceral pleura. Diagnoses were made by chest x-ray film, one case immediately and the other 24 hours later. In both cases, the narrow bore tube was inserted asymptomatically by a graduate physician. Detailed case reports of both patients are presented, those patients at risk for abnormal placement of this nasogastric tube are discussed, and new guidelines for safer use are proposed.

Aged↗