1/9. air embolism during tunneled central catheter placement performed without general anesthesia in children: a potentially serious complication.central venous catheters have had an increasingly important role in a variety of patient care situations, including long-term antibiotic therapy, chemotherapy, and nutritional support. The recent past has seen a gradual transition from placement of vascular access catheters by surgeons to placement by interventional radiologists. The interventional radiology service places a majority of the vascular access devices at our children's hospital, including peripherally inserted central catheters, tunneled central venous catheters, temporary and permanent hemodialysis catheters, and subcutaneous ports. Most procedures performed by our interventional radiology service in children can be successfully completed with use of intravenous (i.v.) sedation, and a few require general anesthesia (GA). Key advantages of GA over i.v. sedation include the ability to have positive pressure ventilation (PPV) or controlled apnea during the procedure. We report our experience of venous air embolism in three small children during placement of tunneled central venous catheters when GA was not used.- - - - - - - - - - ranking = 1keywords = catheter (Clic here for more details about this article) |
2/9. A case of pulmonary arteritis with stenosis of the main pulmonary arteries with positive myeloperoxidase-antineutrophil cytoplasmic autoantibodies.A 53-year-old woman was referred to our hospital with the main symptoms of productive cough, fever and exertional dyspnoea. Chest X-ray revealed enlargement of the left hilar shadow and cavitary infiltration in the right upper lobe. 99mTechnetium-macroaggregated albumin (99mTc-MAA) perfusion scintigram showed complete hypoperfusion through the entire right lung. A pulmonary angiogram revealed stenotic lesions in the right and left main pulmonary arteries. Right cardiac catheterization showed an elevated right ventricular systolic pressure. There was no evidence of systemic arterial lesions nor vasculitis. The patient was positive for myeloperoxidase (MPO)-antineutrophil cytoplasmic autoantibodies (ANCA) (168 EU). The mycobacterium avium complex sputum culture was positive. The pulmonary stenotic lesions were surgically resected. The resected pulmonary arterial lesions were pathologically diagnosed as non-specific vasculitis. The cavitary lesion disappeared 6 months after the surgery. Two years after the surgery, although the MPO-ANCA level had decreased to 12 EU, stenosis of the pulmonary arteries reappeared. It is suggested that the patient became positive for MPO-ANCA in association with the mycobacterium avium complex infection, and that the presence of MPO-ANCA may not be related to the development of pulmonary stenosis of the main pulmonary arteries.- - - - - - - - - - ranking = 0.1keywords = catheter (Clic here for more details about this article) |
3/9. Metallic cough and pyogenic liver abscess.The curious symptom of a metallic cough in association with a pyogenic hepatic abscess should heighten awareness of a fistula. We describe a 78-year-old female with severe diverticular disease, on long-term steroid treatment for polymyalgia rheumatica. She developed a pyogenic liver abscess, treated initially by antimicrobial therapy, and subsequently drained by ultrasound and computed tomography-guided percutaneous transhepatic pigtail catheterization. This was complicated by a fistulous communication between the abscess cavity and the bronchus, confirmed by radiology. After repeated attempts at drainage and antimicrobial therapy the abscess cavity, including the hepatobronchial fistula, resolved.- - - - - - - - - - ranking = 0.1keywords = catheter (Clic here for more details about this article) |
4/9. Hemodialysis central venous catheter tip fracture with embolization into the pulmonary artery.We describe the first reported case of spontaneous hemodialysis catheter fracture and embolization. We also include a summary of similar cases not previously reported in the literature that appear in the food and Drug Administration records as medical equipment malfunctions. Our patient presented with a cough and was initially treated for presumptive pneumonia. A chest radiograph indicated that the tip of the catheter had fractured and migrated into a distal branch of the pulmonary artery. The catheter was replaced, but the tip could not be retrieved because of its peripheral location. Possible causes and consequences of this underreported complication are discussed.- - - - - - - - - - ranking = 0.7keywords = catheter (Clic here for more details about this article) |
5/9. Interpretation of cardiac pathophysiology from pressure waveform analysis: coronary hemodynamics. Part II: Patterns of coronary flow velocity.These specialized tracings illustrate several important patterns of coronary blood flow velocity that may occur in patients during diagnostic cardiac catheterization. Recent advances in catheter methodologies permit easy measurement of coronary blood flow during routine coronary angiography. At the current time, measurement of coronary blood flow velocity remains a research technique but is of continuing interest in clinical syndromes of atypical angina, myocardial hypertrophy and infarction, early transplant rejection, or premature (subangiographic) atherosclerosis in some patients. A later hemodynamic rounds will examine the effects of coronary blood flow velocity and various hyperemic stimuli to assess coronary vasodilatory reserve.- - - - - - - - - - ranking = 0.2keywords = catheter (Clic here for more details about this article) |
6/9. Spontaneous migration of a Port-a-Cath catheter into ipsilateral jugular vein in two patients with severe cough.Port-A-Cath systems are widely used for long-term therapy in the treatment of malignancies and infection. Spontaneous migration of Port-A-Cath catheters after satisfactory initial placement is uncommon but is associated with a number of complications, including neck pain, shoulder pain, ear pain, infection, venous thrombosis, and neurological complications. We describe two cases of migration of the Port-A-Cath catheter into the ipsilateral internal jugular vein. Both received surgical reposition of the catheter with a longer one. We speculate that the migration is related to severe cough and vigorous changes of intrathoracic pressure. We also review the literature regarding such unusual complications of Port-A-Cath. Because catheter migration might be asymptomatic, monitoring the catheter position bimonthly when not used is recommended. Before a new course of chemotherapy or encountering symptoms of migration, obtaining a chest roentgenogram is essential to provide early detection and repositioning management of a migrated catheter.- - - - - - - - - - ranking = 1keywords = catheter (Clic here for more details about this article) |
7/9. Coughing and central venous catheter dislodgement.Silastic central venous catheters are subject to dislodgement from a variety of causes. Only one occurrence of catheter dislodgement has been previously reported in connection with coughing. We report four additional cases of silastic central venous catheter dislodgement associated with forceful coughing paroxysms, alone or in combination with emesis or rectal tenesmus. Three episodes of catheter dislodgement occurred in adolescents or young adults with cystic fibrosis, who may constitute a particularly high-risk group. Dislodgement in two patients was asymptomatic. These case suggest that patients with frequent or severe paroxysms of increased intrathoracic pressure may be at higher risk of catheter dislodgement. Since dislodgement may be initially asymptomatic and can cause serious complications, a high index of suspicion for dislodgement in patients with silastic central venous catheters and coughing paroxysms is advised.- - - - - - - - - - ranking = 1keywords = catheter (Clic here for more details about this article) |
8/9. cough-cardiopulmonary resuscitation in the cardiac catheterization laboratory: hemodynamics during an episode of prolonged hypotensive ventricular tachycardia.cough-CPR, a deep rhythmic forceful cough repeated 30-60 times per minute, can be an effective resuscitative technique during emergencies occurring in the cardiac catheterization laboratory. We provide documented evidence on the potential of cough-CPR to maintain adequate systemic arterial blood pressure and consciousness during malignant ventricular arrhythmias, including the longest cough-CPR episode (75-90 sec), with continuous hemodynamics recorded. Results in three patients disclose that 1) mean arterial pressure during cough-CPR was 47-66% of nonarrhythmic baseline at a cough rate of 38-46% of normal sinus rhythm heart rate; 2) mean arterial pressure during hypotensive ventricular tachycardia was 17-60 mm Hg higher with than without cough-CPR; 3) at comparable diastolic pressures (33 vs. 31 mm Hg), systolic arterial pressure during cough-CPR was 40 mm Hg higher than basic CPR; and 4) consciousness can be maintained with cough-CPR during prolonged malignant ventricular arrhythmias. Thus cough-CPR can be a valuable adjunct in maintaining patient stability while definitive therapy for the malignant ventricular arrhythmia is administered.- - - - - - - - - - ranking = 0.5keywords = catheter (Clic here for more details about this article) |
9/9. Sustained consciousness during ventricular fibrillation: case report of cough cardiopulmonary resuscitation.A 54-year-old male developed ventricular fibrillation during right coronary angiography. cough cardiopulmonary resuscitation was performed for 30 sec allowing the patient to remain alert and hemodynamically stable. cough cardiopulmonary resuscitation is a simple, often overlooked technique that can be utilized during resuscitation in the cardiac catheterization laboratory.- - - - - - - - - - ranking = 0.1keywords = catheter (Clic here for more details about this article) |