PubMed Health⌕ Search

Biomedical subjects

J P M Frölke

Publications and source records attributed to J P M Frölke.

6 recordsLinked to original sources
PubMed2007

Safety of computer-assisted surgery for cannulated hip screws.

Computer-assisted orthopaedic surgery has developed considerably during the past few years. Several manufacturers produce hardware and software for use in trauma surgery. Validation of these systems before clinical application is mandatory to be sure they work accurately and safely. The accuracy of surgical performance is highly correlated with the cut-out percentages of hip screws. In a standardized operative setting, three cannulated hip screws were inserted in each of 20 sawbones. The screws were positioned either by fluoroscopic navigation technique or by conventional operative technique depending on randomization. Our primary aim was to assess whether computer-navigated screw fixation is equally safe compared with conventional screw fixation using fluoroscopy. To determine safety, we investigated number of drilling attempts, screw position, and radiation time. Secondary to these safety parameters, we also compared the operating time between the two procedures to assess the efficiency of computer navigation. Statistical analysis showed no differences regarding accuracy of screw position. Computer-assisted surgery resulted in fewer drilling attempts and less radiation time, with a similar operation time. We believe the currently used navigation system is safe and accurate.

Bone Screws↗
PubMed2004

The role of recombinant factor VIIa in the treatment of life-threatening haemorrhage in blunt trauma.

BACKGROUND: Recombinant factor VIIa (rFVIIa) is a novel haemostatic agent originally developed to treat bleeding in haemophiliacs. Several case reports suggest effectiveness of rFVIIa in the treatment of patients without pre-existing bleeding disorders. The aim of this study is to evaluate treatment with recombinant (rFVIIa) in blunt trauma patients with uncontrolled bleeding. PATIENTS AND METHODS: This study was designed as a retrospective case review. Consecutive patients with life-threatening uncontrolled bleeding due to blunt trauma who were treated with rFVIIa were selected. Data were obtained from medical records. RESULTS: A total of eight blunt trauma patients were treated with rFVIIa for uncontrolled bleeding. After treatment the need for transfusion of red blood cells (RBC) decreased significantly from 31.3 +/- 15.8 to 6.1 +/- 6.8 units (P = 0.003), fresh frozen plasma (FFP) from 13.3 +/- 6.6 to 5 +/- 6.3 units (P = 0.02), and platelets from 3.6 +/- 1.8 to 1.5 +/- 2.3 units (P = 0.01). Three patients died of non-bleeding complications. The other five fully recovered. CONCLUSION: Treatment with rFVIIa reduced or stopped bleeding in all patients. No adverse events were registered. Prospective studies are mandatory to elucidate the role of rFVIIa in blunt trauma.

Adolescent↗
PubMed2004

[A 'blind' transfusion policy in patients with acute severe blood loss].

Three patients presented with acute, excessive bleeding: a 54-year-old man following trauma to the pelvis, a 34-year-old woman with postpartum blood loss and a 62-year-old man with a duodenal ulcer. Treatment consisted of surgery, the administration of blood products and haemostatic agents, in varying strategies. The men recovered but the woman died as a result of cardiac rhythm disorders. It is unclear to what extent blood products should be used in patients with acute, excessive blood loss. Also, haemostatic agents have already found a place in the treatment of these patients, but it is unclear whether they should be administered early, as prophylaxis, or later when all other treatments have failed. While official registration of the haemostatic agent recombinant activated factor VII for this indication is pending, it is important that treatment with rFVIIa be embedded in a structured protocol to prevent overuse of blood products and administration of this medication to patients who do not need it. Controlled clinical trials for validation should be carried out prior to the implementation of such a protocol.

Adult↗
PubMed2004

[Diagnostic and pharmaco-therapeutic options in acute severe blood loss].

In patients with excessive blood loss, coagulation is compromised by hypothermia, metabolic acidosis due to impaired tissue perfusion, loss of coagulation factors and platelets while their consumption is increased, and by massive infusion with plasma expanders. Currently available laboratory tests are insufficiently reliable and too time-consuming to enable the evaluation of the effect of pharmaco-therapeutic interventions during severe blood loss. Several haemostatic drugs appear to be effective in the treatment of blood loss after elective surgery, but have been insufficiently investigated in patients with severe bleeding. A rational transfusion policy entailing the use of sufficient amounts of plasma is necessary in the treatment of patients with severe bleeding.

Acute Disease↗