Search PubMed⌕ Search

Biomedical subjects

M Hauswald

Publications and source records attributed to M Hauswald.

43 records · Page 3Linked to original sources
PubMed1986

Aortic blood flow during sequential MAST inflation.

Cardiac output, pulse rate, blood pressure, and distal abdominal aortic blood flow were measured in ten healthy volunteers during sequential inflation of medical antishock trousers. Full inflation of all three compartments decreased distal aortic blood flow by three quarters (P less than .001) and increased blood pressure by 10% (P less than .001), but had no effect on cardiac output or pulse rate. Inflation to lower pressures was markedly less effective.

Adult↗
PubMed1985

The effect of patient position and MAST inflation on carotid sinus diameter.

A comparison of several maneuvers that are believed to increase vagal tone was made by measuring the carotid sinus with an ultrasound device. For 20 healthy volunteers the mean carotid sinus diameter was 5.7 mm supine, 6.1 mm in the Trendelenberg position, 6.5 mm after supine medical antishock trousers (MAST) inflation, 7.0 mm after MAST inflation in the Trendelenberg position, and 7.3 mm during a headstand. Each mean value was significantly different (P less than .01) from each of the others. These results have important implications for the treatment of dysrhythmias such as paroxysmal supraventricular tachycardia.

Adult↗
PubMedDate not supplied

Confusing extrication with immobilization: the inappropriate use of hard spine boards for interhospital transfers.

INTRODUCTION: To determine if air medical interhospital transport of patients with spinal injuries is done with techniques that minimize ischemic skin damage. METHODS: A formal telephone survey instrument was given to all U.S. flight services accredited by the Commission on Accreditation of Medical Transport Systems (CAMTS). RESULTS: Thirty-seven active services were listed by CAMTS; the author's service was excluded from the survey. One service did only scene responses; one was unreachable by phone; four were unwilling to complete the form, leaving 30 services for evaluation. Twenty-nine services used metal, plywood, or plastic "spine" boards for immobilization during interhospital transport. Eight services padded boards with blankets or cloth for patients immobilized for "extended periods." Eighteen services routinely reimmobilized all major trauma patients even if cleared by the sending physician, and four others reimmobilized patients not "cleared" by a radiologist. No service moved patients with known spinal injuries to softer, more conforming devices before transport. Only three services followed patients for complications throughout hospitalization. Two services reported cases of skin breakdown thought to be a result of prolonged immobilization. CONCLUSION: Air medical services often transport patients several hours after injury. Patients, particularly those unable to move because of their injuries, medication, or paralysis, are at risk for ischemic necroses of their skin. Decubitus ulcers are a major cause of morbidity and mortality, and preventing ulcers requires a very soft, conforming surface. Despite these facts, the highly select services surveyed continue to use hard, slippery boards designed for extrication at trauma scenes to immobilize patients for transport.

Accreditation↗
PubMedDate not supplied

Maximizing comfort and minimizing ischemia: a comparison of four methods of spinal immobilization.

OBJECTIVE: To determine which of four methods of spinal immobilization causes the least ischemic pain. METHODS: A prospective, nonblinded comparative trial was conducted at a statewide emergency medical services training facility using a convenience sample of emergency medical technician students. After lying motionless for 10 minutes, students evaluated each device using a 10-centimeter visual analog scale. Subjective comfort was used as a measure of ischemia. RESULTS: Comfort scores were significantly different for all methods (F = 101, p < 0.001). A backboard padded with a gurney mattress and eggcrate foam (the equivalent of a spinal rehabilitation bed) caused the least ischemic pain (9.6 cm, 95% CI, 8.9 to 9.8 cm). A backboard padded with a gurney mattress was the second most comfortable device (7.0 cm, 95%/CI, 6.4 to 7.4 cm). A backboard padded with a folded blanket was the third most comfortable (3.3 cm, 95% CI, 2.6 to 4.9 cm). The backboard alone caused the most pain (0.8 cm, 95% CI, 0.7 to 2.1 cm). CONCLUSION: Increasing the amount of padding on a backboard decreased the amount of ischemic pain caused by immobilization.

Analysis of Variance↗
PubMedDate not supplied

Misquotation on PASG.

Explore the source record for details and available documents.

Emergency Medical Services↗