JA Clinical Reports最新文献

Background: To our knowledge, no previous case report explicitly shows that urethral catheter misplacement in the vagina cannot be ruled out even if urinary outflow is observed during catheterization.

Case presentation: A 70-year-old female underwent urethral catheterization during induction of general anesthesia for hemiarthroplasty using a bipolar hip prosthesis. Although the urethral meatus could not be visualized, urinary outflow was observed. However, drainage subsequently stopped, and the catheter was eventually found to have been misplaced in the vagina. Detection of the catheter misplacement was delayed because of the assumption that no urinary outflow occurs when the catheter is misplaced in the vagina.

Conclusion: Even if urinary outflow is observed during female urethral catheterization, catheter misplacement in the vagina cannot be ruled out; therefore, catheter misplacement in the vagina must be verified in patients for whom the urethral meatus cannot be identified for catheter insertion or when drainage stops.

Background: Negative-pressure pulmonary edema (NPPE) often develops with upper airway obstruction, and is uncommon in secured airways, for example, after tracheostomy. Herein, we report two cases of NPPE post-tracheostomy.

Case presentation: Case 1: A 69-year-old man underwent prophylactic tracheotomy for possible airway obstruction secondary to glottic carcinoma. Two hours after awakening from general anesthesia, he had difficulty expectorating and developed NPPE due to airway secretions obstructing the tracheostomy tube. Case 2: An 11-year-old boy was admitted to the intensive care unit for continuous hemodiafiltration on a ventilator under sedation. On the 76th day, the day after the tracheostomy was performed, the patient developed patient-ventilator asynchrony due to sedative withdrawal syndrome. The postulated primary mechanism was functional airway obstruction due to patient-ventilator asynchrony.

Conclusion: These cases highlight the need to consider NPPE, even in patients with an airway secured with a tracheostomy.

Background: Guidelines on airway management in neonates and infants recommend using a stylet when a videolaryngoscope is used, but it is not clear if the use of a stylet facilitates tracheal intubation and which shape of the stylet is suitable in neonates.

Methods: As a preliminary simulation study of a randomized controlled cross-over design, 25 anesthesiologists (3 specialists, 11 senior residents, and 11 junior residents) used a McGrath® MAC videolaryngoscope (Covidien, Medtronic, Tokyo, Japan) blade 1 for tracheal intubation (of a 3.5-mm ID Shiley™ tube with a cuff), with one of four differently shaped stylets (C-shaped, J-shaped, hockey stick-shaped and double C-shaped) or without a stylet in a manikin of a neonate, and compared intubation times.

Results: Compared with intubation time without the use of a stylet, intubation time was significantly longer with the use of the J-shaped stylet (P = 0.007; median (95% CI) difference: 2 (1 to 2) s) or with the hockey stick-shaped stylet (P = 0.0002; median (95% CI) difference: 9 (9 to 10) s). In contrast, intubation time was similar between no stylet and the C-shaped stylet (P = 0.90; median (95% CI) difference: 0 (0 to 0) s) or between no stylet and the double C-shaped style (P = 0.60; median (95% CI) difference: 0 (0 to 0) s).

Conclusions: In conclusion, while time to tracheal intubation would be similar with and without the use of a stylet, the shape of the stylet would affect intubation time in neonates.

Background: Transurethral surgery is often accompanied by postoperative urinary tract infection. Although early detection and adequate treatment of bacteremia are required to prevent sepsis, it is usually undetectable during surgery. We report two cases with remarkable hypertension and tachycardia during transurethral surgery in which bacteremia was diagnosed by an intraoperative blood test.

Case presentation: An 80-year-old man (Case 1) underwent transurethral holmium laser prostate enucleation under spinal anesthesia, and an 88-year-old woman (Case 2) underwent transurethral resection of bladder tumor under general anesthesia. Altered consciousness (Case 1) and postoperative delirium (Case 2) were noted, in addition to remarkable intraoperative hypertension and tachycardia. We administered broad-spectrum antibiotics for possible bacteremia in both cases. The patients' hemodynamics positively recovered the following day. Intraoperative blood samples revealed gram-negative bacillus.

Conclusions: Hypertension, tachycardia, and altered consciousness may suggest the onset of symptomatic bacteremia during transurethral surgery, and adequate treatment is required to prevent sepsis.

Background: Camptocormia, a postural deformity seen in Parkinson's disease (PD), complicates general anesthesia, especially airway management, owing to severe spinal flexion in advanced stages.

Case presentation: We report the anesthetic management of a 76-year-old man with PD who developed severe long-seated forward flexion with the face buried between the knees, from camptocormia and multiple spinal surgeries. Removal of the exposed spinal implants was necessary, and general anesthesia was planned. Anesthesia was administered in the right lateral position from induction to awakening. Video laryngoscopy enabled successful intubation, and remimazolam with flumazenil ensured good recovery without complications.

Conclusions: This case demonstrates the feasibility of managing the airway and administering anesthesia in the right lateral position in patients with PD with severe long-seated forward flexion. Video-laryngoscopy and remimazolam with flumazenil offer advantages in such cases, although further studies are required to validate their broader applications.

Background: Management of acute aortic dissection (AAD) caused by retrograde perfusion through the femoral artery during minimally invasive cardiac surgery (MICS) remains controversial. We present a case of AAD occurring during the late cardiopulmonary bypass (CPB) phase, which was successfully managed by vascular graft replacement, without altering the blood supply route.

Case presentation: A 63-year-old man was scheduled for totally endoscopic aortic valve replacement. CPB was initiated through the right femoral artery and venous cannulation. Approximately 120 min after the initiation of CPB, mean arterial pressure and bilateral cerebral regional oxygen saturation temporarily decreased. Transesophageal echocardiography revealed type A AAD. Cerebral perfusion was preserved, allowing us to proceed to deep hypothermic circulatory arrest and successfully perform ascending aortic replacement without altering the blood supply route.

Conclusions: In MICS, continuous monitoring is crucial as AAD can occur at any point during CPB, and early detection enables successful outcomes.

Background: Plasma exchange (PE) removes high-molecular-weight substances and is sometimes used for antineutrophil cytoplasmic antibody-associated vasculitis (AAV) with alveolar hemorrhage. Hypotension during PE is rare, except in allergic cases. We report a case of shock likely caused by increased pulmonary vascular resistance (PVR) during PE.

Case presentation: A 66-year-old man with pulmonary hypertension (PH) and glomerulonephritis was admitted with dyspnea. He had discontinued sildenafil prior to admission. Alveolar hemorrhage associated with AAV was suspected, and PE was performed. Soon after, he developed circulatory failure and hyperlactatemia. Echocardiography revealed right ventricular dilation, suggesting increased PVR. Inhaled nitric oxide (iNO) was administered, rapidly improving hyperlactatemia and oxygenation. The shock observed during PE was attributed to multiple factors, including the potential removal of sildenafil, which may have led to an increase in PVR.

Conclusions: The shock was attributable to acute right heart failure caused by an exacerbation of PH, possibly due to sildenafil removal via PE, although other contributing factors could not be excluded.