Characteristics and dimensions of the Schneiderian membrane and apical bone in maxillary molars referred for apical surgery: a comparative radiographic analysis using limited cone beam computed tomography.

Introduction: The purpose of the present study was to evaluate the thickness and the anatomic characteristics of the Schneiderian membrane and cortical bone using limited cone beam computed tomography (CBCT) scannning in patients referred for planning of apical surgery of maxillary molars.

Methods: This controlled study included 2 cohorts of patients (n = 50 for each group). For patients in group 1 (with apical pathology), 3 measurements in millimeters were performed using coronal and sagittal CBCT slices: the dimension of the apical lesion in the axis of the root, the width of the cortical bone in the axis of the root, and the thickness of the Schneiderian membrane perpendicular to the underlying cortical bone.

Palliative treatment of obstructing stone during pregnancy.

We present a twenty-three-year-old obese female with a twenty-four-week gestation pregnancy, a left ureteral stone, and urosepsis. She was treated conservatively with intravenous antibiotics and an indwelling Double J Cook catheter until the postpartum period. This represents a satisfactory alternative to nephrostomy drainage or surgical or percutaneous stone removal during pregnancy.

[High frequency jet-ventilation in esophagotracheal fistula].

High-frequency jet-ventilation (HFJV) is not widely used, mainly because of technical problems and difficulty to assess its efficiency. However, there is general agreement on following major indication: artificial ventilation in patients with oesotracheal fistula. In the case reported here, HFJV allowed efficient ventilatory support through an endotracheal tube with deflated cuff.