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Ultrasound-guided transversus abdominis plane block: description of a new technique and comparison with conventional systemic analgesia during laparoscopic cholecystectomy
El-Dawlatly AA, et al. Br J Anaesth 2009 - Clinical Trial. Among authors: Marhofer P. PMID 19376789
Patients in Group A received significantly less [corrected] intraoperative sufentanil and postoperative morphine compared with those in Group B [mean (SD) 8.6 (3.5) vs 23.0 (4.8) microg, P<0.01, and 10.5 (7.7) vs 22.8 (4.3) mg, P<0.05]. ...
Patients in Group A received significantly less [corrected] intraoperative sufentanil and postoperative morphine compared with those in Grou …
Ultrasonographic guidance improves sensory block and onset time of three-in-one blocks
Marhofer P, et al. Anesth Analg 1997 - Clinical Trial. PMID 9322469
The onset of sensory blockade was significantly shorter in Group US compared with Group NS (US 16 +/- 14 min, NS 27 +/- 16 min, P < 0.05). The quality of the sensory block after injection of the local anesthetic was also significantly better in Group US compared with Group NS (US 15% +/- 10% of initial value, NS 27% +/- 14% of initial value, P < 0.05). ...
The onset of sensory blockade was significantly shorter in Group US compared with Group NS (US 16 +/- 14 min, NS 27 +/- 16 min, P &lt …
Magnesium sulfate reduces intra- and postoperative analgesic requirements
Koinig H, et al. Anesth Analg 1998 - Clinical Trial. Among authors: Marhofer P. PMID 9661575
During the intraoperative and postoperative periods, patients in the magnesium group required significantly less fentanyl than those in the control group (control group 0.089 +/- 0.02 microgram.kg-1.min-1 versus magnesium group 0.058 +/- 0.01 microgram.kg-1.min-1; P < 0.05 and control group 0.021 +/- 0.013 microgram.kg-1.min-1 and magnesium group 0.0031 +/- 0.0018 microgram.kg-1.min-1; P < 0.01 for intraoperative and postoperative periods, respectively). ...
During the intraoperative and postoperative periods, patients in the magnesium group required significantly less fentanyl than those in the …
Simulation of an epidural test dose with intravenous isoproterenol in sevoflurane- and halothane-anesthetized children
Kozek-Langenecker SA, et al. Anesth Analg 1998 - Clinical Trial. Among authors: Marhofer P. PMID 9728825
The minimal effective dose of isoproterenol required to produce an increase of > or = 20 bpm was 55 ng/kg (42-72 ng/kg; 95% confidence interval) in sevoflurane-anesthetized children and 32 ng/kg (26-38 ng/kg; 95% confidence interval) in halothane-anesthetized children (P < 0.05). ...
The minimal effective dose of isoproterenol required to produce an increase of > or = 20 bpm was 55 ng/kg (42-72 ng/kg; 95% confidence in …
Ultrasonographic guidance reduces the amount of local anesthetic for 3-in-1 blocks
Marhofer P, et al. Reg Anesth Pain Med 1998 - Clinical Trial. PMID 9840855
Onset time was significantly shorter in the US-guided group compared with both NS-guided groups (group A 13+/-6 minutes; group B 27+/-12 minutes; and group C 26+/-13 minutes; P < .01 to groups B and C). Quality of sensory block was significantly better in group A (4%+/-5% of initial value) compared with groups B and C (group B 21%+/-11% of initial value, P < .01 to group A; group C 22%+/-19%, P < .01 to group A). ...
Onset time was significantly shorter in the US-guided group compared with both NS-guided groups (group A 13+/-6 minutes; group B 27+/-12 min …
The dose-response of caudal ropivacaine in children
Koinig H, et al. Anesthesiology 1999 - Clinical Trial. Among authors: Marhofer P. PMID 10319782
RESULTS: A significantly longer (P < 0.0001) duration of analgesia (median [range]) was observed in the R0.5 group (1,440 [335-1,440] min), whereas the R0.25 group (208 [175-340] min) and the B0.25 group (220 [100-390] min) were comparable. ...

RESULTS: A significantly longer (P < 0.0001) duration of analgesia (median [range]) was observed in the R0.5 group (1,440 [335-1,4

The effects of clonidine on ropivacaine 0.75% in axillary perivascular brachial plexus block
Erlacher W, et al. Acta Anaesthesiol Scand 2000 - Clinical Trial. Among authors: Marhofer P. PMID 10669272
A P-value of < or = 0.05 was considered as statistically significant. RESULTS: The duration of blockade was without significant difference between the groups. ...

A P-value of < or = 0.05 was considered as statistically significant. RESULTS: The duration of blockade was without significant di

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