ライフサイエンスコーパス: guidewire

1 sured using fluoroscopy and an intravascular guidewire.

2 independent distal filter using any 0.014'' guidewire.

3 or radiofrequency energy delivered through a guidewire.

4 sign was based on a clinical coronary artery guidewire.

5 red with a pressure sensor/thermistor-tipped guidewire.

6 to inability to cross the occlusion with the guidewire.

7 iography and an intracoronary Doppler-tipped guidewire.

8 sion is feasible with the MR imaging-heating guidewire.

9 hy (QCA) and an intracoronary Doppler-tipped guidewire.

10 ith stenting over a conventional angioplasty guidewire.

11 uidewires and 0.36 mm (0.014 inch) for micro guidewires.

12 ing ratings were measured for the MR imaging guidewires.

13 as easier with standard and micro MR imaging guidewires.

14 f MR imaging guidewires and standard nitinol guidewires.

15 ith both the MR imaging and standard nitinol guidewires.

16 nce by using standard clinical catheters and guidewires.

17 fluoroscopy by using clinical catheters and guidewires.

18 obtained with endovascular pressure-sensing guidewires.

19 trium, foramen ovale, and left atrium with a guidewire and 1.8F to 2.6F tapered catheter, a self-expa

20 A stiff guidewire and a large sheath distorted the anatomy, whic

21 the abdominal aorta by electrifying a caval guidewire and advancing it into a pre-positioned aortic

22 surements and requires a pressure-monitoring guidewire and hyperemic stimulus.

23 0-mm balloon catheter was inserted over this guidewire and inflated only if the blood pressure was le

24 nctional stenosis severity over a work-horse guidewire and is used as a more feasible alternative to

25 Average SNR with the MR imaging guidewire and surface coil combination was significantly

26 0.89 mm (0.035 inch) for standard and stiff guidewires and 0.36 mm (0.014 inch) for micro guidewires

27 the operator to advance, retract, and rotate guidewires and catheters.

28 intravascular ultrasound catheter we placed guidewires and interventional catheters via the umbilica

29 n diameter than contemporary sensor-equipped guidewires and may, thereby, influence functional measur

30 pigs by using active-tracking catheters and guidewires and MR tracking software created for neurovas

31 n compared with unmodified "passive" nitinol guidewires and shortened procedure time (26+/-11 versus

32 n was used to compare handling of MR imaging guidewires and standard nitinol guidewires.

33 ling approaches for diagnostic catheters and guidewires and to demonstrate their navigation in the va

34 eter, a sensor-tipped high-fidelity pressure guidewire, and a Doppler flow guidewire, respectively.

35 surface coil and an intrabiliary MR imaging guidewire, and contrast-to-noise ratios of CBD walls bef

36 strumentation, allow the use of conventional guidewires, and permit embolic protection in anatomy unf

37 Coronary guidewires are indispensable during percutaneous coronar

38 oaxially inserted 0.030-inch diameter active guidewires as endovascular devices.

39 nsity analysis using a pressure-low velocity guidewire at baseline and again 30 minutes after a 1-min

40 y were measured using a dual sensor-equipped guidewire before and after introduction of Navvus.

41 uch as pancreatic duct stenting and dye-free guidewire cannulation.

42 rted into new sites, not into old sites over guidewires; catheter cultures were done by using semi-qu

43 data acquisition rate, small and inexpensive guidewires/catheters, and ability to be combined with ad

44 he histopathologic appearance of hydrophilic-guidewire coating material ex vivo by embedding the coat

45 or 15 minutes by using an MR imaging-heating guidewire connected to a custom RF generator.

46 t over a conventional 0.014-inch angioplasty guidewire (control group).

47 After exchanging for a rigid guidewire, conventional TAVR was performed through trans

48 J-CTO score was 2.18+/-1.26, and successful guidewire crossing within 30 minutes and final angiograp

49 discriminatory and calibration capacity for guidewire CTO crossing within 30 minutes but it does not

50 The introduction of excessive lengths of guidewire during placement of central venous catheters f

51 velocity were assessed with sensor-equipped guidewires during baseline and maximal hyperemia, induce

52 ion times were obtained for standard nitinol guidewires during x-ray-based fluoroscopy.

53 flow velocity (measured by use of a Doppler guidewire) during primary or rescue PTCA in 41 acute myo

54 n=697), antibiotic lock solution (n=546), or guidewire exchange (n=353).

55 Antibiotic lock solution and guidewire exchange had similar cure proportions that wer

56 Among S. aureus infections, guidewire exchange led to a higher cure proportion than

57 ted bacteremia should be treated with either guidewire exchange or antibiotic lock solution.

58 Fever alone as an indication for guidewire exchange resu

59 OR, 2.88; 95% CI, 1.82 to 4.55; P<0.001 for guidewire exchange versus systemic antibiotics).

60 Indications for guidewire exchange were analyzed, and the rate of cathet

61 a chest radiograph was performed after each guidewire exchange.

62 ion during catheter insertion and subsequent guidewire exchange.

63 s substituted for fever as an indication for guidewire exchange.

64 c antibiotics, antibiotic lock solution, and guidewire exchange.

65 d not have chest radiographs performed after guidewire exchange; 69 patients had subsequent radiograp

66 decrease the hospital costs associated with guidewire exchanges and new catheter insertions.

67 iographs are unwarranted after uncomplicated guidewire exchanges of central venous catheters in hemod

68 ne; b) to decrease the number of unnecessary guidewire exchanges of existing catheters by substitutin

69 Criteria for uncomplicated guidewire exchanges were established and followed.

70 tioned catheters or complications related to guidewire exchanges.

71 Fever was the indication for 42% of all guidewire exchanges.

72 can be advanced over a traditional coronary guidewire, facilitates FFR assessment but may underestim

73 ts were randomized to microcatheter-first or guidewire-first measurement.

74 lts showed that the use of glass-fiber-based guidewires for evaluation of MR imaging-guided endovascu

75 to deliver an exchange-length intracoronary guidewire from the proximal left anterior descending cor

76 Nowadays, most guidewires have hydrophilic coatings to improve their tr

77 nd flow reserve were assessed with a Doppler guidewire in 25 coronary arteries, including 13 severely

78 measured using a Doppler-tipped angioplasty guidewire in 55 patients before and after angioplasty, a

79 Pressure signals were obtained by pressure guidewire in 56 lesions (49 patients) in the nonhyperemi

80 mon carotid artery injury was induced with a guidewire in apolipoprotein E(-/-) mice.

81 "Active" guidewires, incorporating MRI antennas, improved device

82 METHODS AND Using a model of guidewire-induced arterial injury, we demonstrate decrea

83 enovirus-mediated overexpression of NoxA1 in guidewire-injured mouse carotid arteries significantly i

84 To identify a "safe" guidewire insertion length, the authors performed direct

85 8 cm should be considered the upper limit of guidewire introduced during central catheter placement i

86 d mean gradient) were measured by a pressure guidewire; IVUS and angiographic parameters (minimum lum

87 0.018-in imaging core positioned within the guidewire lumen of the balloon.

88 ected predominantly during sheath placement, guidewire manipulation, and distal-balloon deflation.

89 herapy of magnetic resonance imaging heating guidewire-mediated RF hyperthermia (42 degrees C) plus l

90 The use of intrabiliary MR imaging heating guidewire-mediated RF hyperthermia can enhance the chemo

91 f hydrophilic-coating material from coronary guidewires occur more often than the sparse literature o

92 icantly higher than that with the MR imaging guidewire only or with surface coils only (P < .05), and

93 ycardia (n = 1), and distal pulmonary artery guidewire perforation (n = 1).

94 arteries in six patients were imaged with a guidewire placed in the iliac vein (n = 5) or left renal

95 edure time was from initial skin puncture to guidewire placement.

96 The stiff MR imaging guidewire provided the best support for cannulation of t

97 elity pressure guidewire, and a Doppler flow guidewire, respectively.

98 w to the ischemic limb measured with Doppler guidewire (resting flow=22+/-5 versus 14+/-4; P<.01; hyp

99 or following failure to pass a conventional guidewire ("secondary attempt"; n = 13).

100 with a pair of endovascular pressure-sensing guidewires served as a reference standard.

101 hepatic and left portal vein with subsequent guidewire snaring to perform portosystemic shunting via

102 The guidewires supplied in catheter kits should have lengths

103 hearts with MR monitoring and an MR imaging guidewire, surface coils, or both.

104 Purpose To evaluate glass-fiber-based guidewires that are safe for magnetic resonance (MR) ima

105 I intervention used custom CTO catheters and guidewires that incorporated MRI receiver antennae to en

106 evelopment of new interventional devices and guidewires, the rate of acute reocclusion and restenosis

107 theterization laboratory using sensor-tipped guidewires; they include the measurement of poststenotic

108 ng a pressure and Doppler flow sensor tipped guidewire to obtain simultaneous pressure and flow veloc

109 The time required for placement of the guidewire, total procedure time, fluoroscopy time, and a

110 For guidewire tracking, we used 2D steady-state free precess

111 Endovascular recanalization (guidewire traversal) of peripheral artery chronic total

112 A coronary sinus guidewire traverses a short segment of the basal septal

113 d and iliac lesions, phase-contrast VIPR and guidewire TSPG measurements were highly correlated (r =

114 s was confirmed by placement of a radiopaque guidewire visible under fluoroscopy (6 dogs, 13 pigs).

115 In seven anesthetized dogs, a Doppler guidewire was placed in the circumflex coronary artery t

116 Under local anesthesia, a transbrachial guidewire was placed under fluoroscopic control in the s

117 of radiofrequency energy delivered through a guidewire was the most effective technique.

118 angiographically ambiguous LMCS, a pressure guidewire was used to calculate FFR, and IVUS parameters

119 A pair of 0.014-inch pressure-sensing guidewires was placed in tandem; sensors 1 cm distal and

120 Visualization with the guidewires was rated on a four-point scale, handling was

121 Results MR imaging guidewires were characterized by good to excellent visib

122 al animal care and use committee, MR imaging guidewires were evaluated for standard endovascular proc

123 Materials and Methods MR imaging-safe guidewires were made from micropultruded glass and/or ar

124 Standard and micro MR imaging guidewires were most suitable for the iliac crossover ma

125 calized MR-induced heating around a metallic guidewire, which they subsequently demonstrate can be su

126 red via the intravascular MR imaging-heating guidewire, while the contralateral artery was not heated

127 ring the magnetic vector deflects a coronary guidewire with a magnetic tip.

128 nnel or exit site infection (exchange over a guidewire with creation of a new tunnel [Nutunl group],

129 ppearing tunnel and exit site (exchange over guidewire within 48 h of antibiotic initiation [Xchng gr

130 selected patients, catheter exchange over a guidewire within 48 h of antibiotic initiation followed