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Biomedical subjects

S Hilton

Publications and source records attributed to S Hilton.

121 records · Page 7Linked to original sources
PubMed1982

Evaluating health education in asthma -- developing the methodology: preliminary communication.

The results are reported of a preliminary study to a controlled trial evaluating health education in asthma. A questionnaire designed to assess asthma morbidity in the previous twelve months and knowledge of the condition was administered to 50 asthma patients. An independent assessment of morbidity was made by the patient's general practitioners, utilizing case notes and their knowledge of the patients. For each aspect of morbidity, `severe' asthma as assessed by doctors tended to be associated with increasing disability on questionnaire assessment. Overall, questionnaire `morbidity scores' were significantly higher in the doctors' `severe' group. Patients' level of knowledge was low, but no significant correlation was found between patients' level of knowledge and level of morbidity.The findings suggest that there is a need for health education in asthma, and that the questionnaire used is a valid tool for measuring the impact of such education on patients' morbidity. An outline of the controlled trial for evaluation of health education is given.

Activities of Daily Living↗
PubMed1981

Acquired lobar emphysema in premature infants with bronchopulmonary dysplasia: an iatrogenic disease?

Five premature infants in whom bronchopulmonary dysplasia developed following prolonged neonatal respiratory support are presented. In all five patients, right middle and/or lower lobe emphysema related to focal obstructing endobronchial masses of granulation tissue subsequently developed. It is speculated that the granulation tissue formed in response to the repeated mechanical trauma of endotracheal tube suctioning.

Female↗
PubMed1981

Hayfever.

Explore the source record for details and available documents.

Humans↗
PubMed1980

Percutaneous transluminal dilation in renal transplant arterial stenosis.

Twelve hypertensive patients underwent percutaneous transluminal dilation (PTD) for relief of arterial stenosis complicating renal allotransplantation. Two patients underwent repeat PTD for recurrent stenosis and hypertension. Six patients had end to end anastomosis of the donor renal artery to the recipient hypogastric artery; four of six PTDs were successful. Six patients had end to side anastomosis of the donor renal artery to the recipient external iliac artery; seven of eight PTDs, including one of two repeat PTDs, were successful. Prior to PTD, all patients were using several antihypertensive medications. Following successful PTD, the mean blood pressure dropped from 184 +/- 15/118 +/- 9 to 133 +/- 13/89 +/- 11 mm Hg (P < 0.001) and remained at that level for up to 15 months (average followup 9 months) with decreased or no antihypertensive medications. Since surgical correction of arterial stenosis occurring after renal transplantation is difficult and may endanger the graft, PTD should be the first interventional therapy.

Adult↗
PubMed1980

Percutaneous transluminal angioplasty of nonatherosclerotic lesions.

Percutaneous transluminal angioplasty (PTA) was attempted on 16 nonatherosclerotic lesions in 14 patients. Dilatation was initially successful in 4/4 cases with renal artery stenosis due to fibromuscular dysplasia (three) and Takayasu arteritis (one); all patients became normotensive and remain normotensive on no antihypertensive medications, at up to 12 months follow-up. PTA was technically successful in 4/5 transplant renal artery stenosis; these four patients remain normotensive or almost normotensive on no or markedly reduced antihypertensive medications, at up to 14 months followup. Initial success was obtained in 3/3 lesions involving vascular grafts; in one, the patient became and remained asymptomatic for the remaining 5 months he lived; in another, occlusion of the dilated segment and the graft occurred 8 months after PTA; and in the third, symptoms and signs of the limb ischemia returned within 24 hr of PTA. PTA was initially successful in a patient with recurrent celiac artery stenosis after surgery for median arcuate ligament syndrome; she has remained free of symptoms for 18 months. In a patient with three radiation-induced stenoses, PTA was initially successful; this patient is asymptomatic at 20 months follow-up. The medial type of fibromuscular dysplasia dilates most easily, suggesting a concentric stretching and some shearing of the fibrous tissue, which then heals in its dilated state. Intimal fibroplasia may be eccentric, and concentric stretching during dilatation may not be possible, leading to less satisfactory results. Radiation-induced stenosis involves periarterial fibrosis and arterial wall thickening, and the results in PTA of many of these lesions may be less satisfactory than reported here. The responsiveness of graft stenoses will vary with the cause; anastomotic stenoses will probably dilate easily, for they involve either concentric intimal proliferation, or a small degree of periarterial fibrosis; graft stenoses surrounded by dense fibrous tissue may respond initially to PTA, but the long-term results will probably be poor due to recurrent graft constriction.

Adult↗
PubMed1977

Selective bronchial intubation for the treatment of severe localized pulmonary interstitial emphysema in newborn infants.

As an alternative to lobectomy and in order to preserve lung tissue which may be potentially functional we have selectively intubated the right main bronchus in four infants 12 to 25 days old with severe, pulmonary interstitial emphysema of the left lung. In each case the localized hyperinflation disappeared within 5 to 48 hours of contralateral selective bronchial intubation. The duration of SBI was 1.5 to 5 days. Three patients benefited from the procedure; there were no serious complications. We propose that SBI should be tried in infants with severe, localized PIE which has caused mediastinal shift, compressive atelectasis, and respiratory acidosis requiring mechanical ventilation despite vigorous pulmonary therapy and usual supportive measures.

Bronchi↗
PubMedDate not supplied

Effects of rate of force development on EMG amplitude and frequency.

The purpose of this study was to compare the amplitude and frequency of the gastrocnemius EMG during ramp and ballistic contractions in highly trained sprint athletes. Sixteen female sprinters performed ramp and ballistic isometric contractions on a Biodex dynamometer. RMS and median frequency of the gastrocnemius EMG signals were obtained at the following torque levels: 25 +/- 5 %, 50 +/- 5 %, 75 +/- 5 %, 100 % MVC. The average rate of force development (RFD), was 610.2 +/- 123.1 N . m/s and 212.3 +/- 155.6 N . m/s for the ballistic and ramp contractions, respectively. In the ramp contractions the EMG amplitude increased as a function of torque. In the ballistic contractions the EMG amplitude decreased from 25 % to 100 % MVC. The highest RFD of 889.45 N . m/s was generated in ballistic contractions by a muscular activation pattern with high EMG amplitude (475.7 microV) and low frequency (116.7 Hz) at 25 % MVC. The findings suggest that the CNS utilizes different muscular activation patterns to modulate RFD in ramp and ballistic contractions. In ramp contractions the EMG amplitude increased linearly with force. In ballistic contractions a high RFD is generated with a muscular activation pattern consisting of high amplitude and low frequency at the start of the contraction.

Adult↗
PubMedDate not supplied

CT in searching for abscess after abdominal or pelvic surgery in patients with neoplasia: do abdomen and pelvis both need to be scanned?

PURPOSE: This prospective study was undertaken to determine the incremental yield of combined abdominal and pelvic CT in searching for clinically suspected postoperative abscess in oncologic patients. METHOD: One hundred seventeen oncologic patients underwent CT to exclude a clinically suspected abscess within 30 days of abdominal or pelvic surgery during an 8 month period. Scans were evaluated for the presence of ascites, loculated fluid collections, or other possible sources of fever. The clinical course and any intervention in the abdomen or pelvis within 30 days after CT were recorded. RESULTS: After abdominal surgery, 44 of 69 [64%; confidence interval (CI) 51-75%] patients had loculated fluid collections in the abdomen; no patient (0%; CI 0-5%) had a loculated fluid collection present only in the pelvis. After pelvic surgery, 22 of 48 (46%; CI 31-61%) patients had loculated fluid collections in the pelvis; no patient (0%; CI 0-7%) had a loculated collection present only in the abdomen. Loculated collections were present in both the abdomen and the pelvis in 4 of 69 (6%; CI 1.6-14%) patients after abdominal surgery and 3 of 48 (6%; CI 1.3-17%) after pelvic surgery. CONCLUSION: Isolated pelvic abscesses after abdominal surgery and isolated abdominal abscesses after pelvic surgery appear to be very uncommon in oncologic patients. CT initially need be directed only to the region of surgery in this particular patient population.

Abdominal Abscess↗
PubMedDate not supplied

Does patient education work?

For many medical conditions (usually chronic diseases) participation in management by the patient plays as important a part as that of the doctor. Simple adherence to drug prescribing schedules is not enough. Patients may need to adjust their treatments and make lifestyle alterations in order to deal effectively with their condition.

Chronic Disease↗