To identify risk factors for adverse events that occur during interfacility transfers by advanced life support (ALS).

A four-year, retrospective, case series.

Three ALS units in a rural/suburban emergency medical services (EMS) system.

351 transports to or from twelve acute care facilities; two patients records could not be located.

Patients were classified by illness/injury, transporting staff, and ongoing therapy; these were correlated with frequency of ALS intervention and patient deterioration.

During the study period, the number of transfers as a percentage of total calls (1.1%–5.2%) rose consistently. There were 11 illness/injury categories; the largest was cardiac (44%, 154 patients). Hospital staff accompanied the patient in 15% (52). Advanced life support (ALS) therapy was required in 4.9% (17): one monitored cardiac arrest was defibrillated successfully, 13 patients required unanticipated medication therapy, and three were noted to have clinical deterioration en route. The upper 95% confidence limit for cardiac arrest is 12.9/1,000 transfers or 20.8/1,000 hours. Patient deterioration and the need for ALS intervention were associated with the presence of medication infusions (p <.O5), but not with hospital staff (p >.40).

Interfacility transfers of a heterogeneous group of patients in this series involve a low risk of cardiac arrest. Patients with medication infusions are at higher risk of deterioration and more frequently require ALS intervention en route. The presence of hospital staff had no measurable effect. These findings have implications for the development of ALS transfer protocols.

The controversy surrounding the use of advanced life support (ALS) for the prehospital management of trauma pivots on the fact that these procedures could cause significant and life-threatening delays to definitive in-hospital care.

In Montreal, Québec, on-site ALS to injured patients is provided by physicians only. The purpose of this study was to identify parameters associated with the duration of scene time for patients with moderate to severe injuries treated by physicians at the scene.

The use of on-site ALS by physicians is associated with a significant increase in scene time.

A total of 576 patients with moderate to severe injuries are included in the analysis. This group was part of a larger cohort used in the prospective evaluation of trauma care in Montreal. Descriptive statistics, analysis of variance, multiple linear regression, and multiple logistic regression techniques were use to analyze the data.

Use of ALS in general was associated with a statistically significant increase in the mean scene time of 6.5 min. (p = .0001). Significant increases in mean scene time were observed for initiation of an intravenous route (mean = 6.6 min., p = .0001), medication administration (mean =5.7 min., p = .0001), and pneumatic antishock garment (PASG) application (mean = 9.3 min., p = .03). Similar differences were observed for total prehospital time. A significant increase in the relative odds for having long scene times (>20 min.) also was associated with the use of ALS. This level of scene time was associated with a significant increase in the odds of dying (OR = 2.6, p = .009).

This study shows that physician-provided, on-site ALS causes significant increase in scene time and total prehospital time. These delays are associated with an increase in the risk for death in patients with an severe injuries.

To assess the accuracy of paramedic estimates of adult body weights in cardiac arrest cases.

Paramedics could accurately estimate the weights of out-of-hospital cardiac arrest patients.

Retrospective data analysis of a 15-month, multicenter study involving nontraumatic out-of-hospital cardiac arrest patients. Paramedic estimates of body weights were compared to weights measured in the hospital. Patients were included in the analysis only if both a paramedic weight and a measured in-hospital weight were recorded.

Six urban emergency medical services systems.

The study population included adults with return of spontaneous circulation who subsequently were admitted to the hospital.

Pearson correlation analysis of paramedic-estimated weights and measured weights.

Among the 133 study patients, the correlation coefficient (R) for paramedic estimates and the actual measured weight was 0.93. Paramedic estimates of weight were within 10% of the measured weights in 74% of the patients, and within 20% of measured weights in 93% of the patients.

Paramedic weight estimates correlated well with measured weights.

1) To determine if paramedics could select appropriate patients for use of the saline lock; 2) to evaluate saline-lock patency upon arrival at the emergency department (ED); and 3) to define any cost-savings associated with the use of the saline lock.

Patients in the prehospital setting who required intravenous (IV) access, but did not require fluid resuscitation. Patients with hypotension or multiple traumatic injuries were excluded.

Paramedics were given the option for the use of either the saline lock or a routine IV set-up. Initially, the reservoir was flushed with 1 ml 0.9 N saline solution and the flush was repeated only if medications subsequently were completed for each patient. Information collected included: 1) demographics; 2) reason for selection; 3) need for fluid infusion; 4) conversion of the lock to a routine IV set-up; and 5) administration of medications through the lock. Failures included inability to flush after arrival to the ED, or local infiltration detected on flush while in the ED. Costs associated with the use of the saline locks were compared with those associated with the use of traditional IV set-ups. Cost-savings were calculated as the cost of a traditional IV set-up minus costs of the lock set-up.

A total of 58 male and 42 female patients was enrolled. All patients were assigned appropriately. The most commonly used indications included chest pain, possible stroke, and shortness of breath. Two locks were occluded, and two had infiltrated when flushed following arrival of the patient to the ED. Five patients had IV fluid bads initiated through the locks. Cumulative cost-saving were [U.S.]$130 to the hospitals and $1,710 to the patients or their carriers. Most paramedics were pleased with the performance and utility of the locks.

The use of saline locks is an alternative to the use of traditional IVs in certain patients in the prehospital setting.

Comparisons of different emergency medical services (EMS) systems often are reduced to simple comparisons between distinct facilities or strategies (e.g., prehospital physician versus paramedic, “scoop and run” versus “stay and play”).

The EMS systems of similar cities (Cologne and Cleveland) in two different countries (Germany and the United States) are compared. The comparison is seen from the perspective of an evolutionary standpoint that reflects the development of the EMS system in connection with the special environments. Data on rescue times, facilities, and (trauma) outcomes are compared.

No statistically significant differences in outcome between the systems were detected.

Both systems are developed in special environments and are optimized over decades, which explains the similarities in outcome.

Patients with acute, intracranial bleeding (ICB), particularly from intracranial aneurysms, are believed to be at high risk for rebleeding or neurologic deterioration if subjected to noise, motion, or stress, but are transported by helicopter with increasing frequency. This study was undertaken to examine the characteristics, safety, and outcomes of air transport for patients with acute subarachnoid hemorrhage (SAH) or other forms of acute ICB in an air medical system.

Charts of all patients with spontaneous, acute ICB who were transported by air from 1986 through 1989 were reviewed. Age, gender, time of transport, transport management measures, pre- and post-transport Glasgow Coma Scale (GCS) score, intensive care unit (ICU) and hospital days, operations, and mortality were compiled for all patients and analyzed.

Eighty-seven patients ranging in age from 2 to 83 years (mean: 47.5 ±18.5 years) met entry criteria. The source of bleeding was cerebral aneurysm in 37 patients; intraparenchymal hemorrhage in 29; an unidentified vascular source in 11; and arteriovenous malformation (AVM) in 10. Mean GCS score measured in 69 patients before and after transport was 10.5 ±4.5 Glasgow Coma Scale score did not change during transport in 61 patients (88%), improved in three (4%), and deteriorated in five (7%). Fifty-nine patients (69%) underwent operations, 36 (41%) within 24 hours of arrival. Mean ICU stay was 14 days (95% CI: 12–15); mean hospital stay was 36 days (95% CI: 27–45 days). Overall mortality was 25% (95% CI: 16–34 days). A GCS score of 3 to 8 at time of transport was associated with both increased hospital length of stay and higher mortality. Patients transported within eight hours of symptom onset had lower GCS scores, but out-come measures were not significantly different from those transported later.

Emergency air medical transfer of patients with acute ICB for definitive neurosurgical care appears to be both safe and effective, and facilitates early definitive diagnosis and operative intervention.