1/37. Central venous access: accidental arterial puncture in a patient with right-sided aortic arch.OBJECTIVE: To describe an unusual case of accidental insertion of a central line into an anomalous right-sided aortic arch. DESIGN: Case report, clinical. SETTINGS: Community hospital, university-affiliated. CONCLUSIONS: Intraoperative radioscopy, chest radiographs, and pressure transducer monitoring usually allow for the prompt recognition of the accidental insertion of venous catheters into the arterial system. However, in the presence of a right-sided aortic arch, a central line could be erroneously inserted into the arterial system and the radiologic findings can give the false impression of a correct placement in the superior vena cava.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
2/37. Natural gas inflation injury of the upper extremity: a case report.High-pressure injection injury is well known to hand surgeons. We present a case of low-pressure inflation injury to the upper extremity. Our experience with this injury, its treatment, and the eventual outcome are discussed.- - - - - - - - - - ranking = 2keywords = pressure (Clic here for more details about this article) |
3/37. Free toe pulp transfer for digital reconstruction after high-pressure injection injury.We report two cases of high-pressure injection injuries to the fingertip in which free toe pulp flaps were used to resurface the palmar surface of the finger following extensive wound debridement. There was good return of sensibility and, because of the high durability of the donor skin, both patients regained good functional use of the injured digits and returned to heavy manual work. There was minimal associated morbidity of the donor sites. The free toe pulp flap represents an excellent alternative for resurfacing the digit with a large residual skin defect after high-pressure injection injury.- - - - - - - - - - ranking = 6keywords = pressure (Clic here for more details about this article) |
4/37. subcutaneous emphysema of a digit through a pre-existing puncture wound.A case of injection of compressed air into a digit is reported. The air was injected at 50 PSI through a trivial puncture wound sustained some hours previously. The case had a benign course, in comparison to high pressure injection injuries with foreign material.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
5/37. A hypothesis to explain the occurence of inner myometrial laceration causing massive postpartum hemorrhage.BACKGROUND: Inner myometrial lacerations were found in three patients who developed uncontrollable postpartum massive bleeding despite the usual treatment for uterine atony. Because all the patients suffered from hemorrhage shock and their medical status deteriorated, their uteri were surgically removed to stop bleeding. After removal, one of them died. postpartum hemorrhage was caused by inner myometrial laceration. We hypothesized a cause of inner myometrial laceration, using the three resected uteri, an assumed model of the uterine body, and 34 women. methods: The subjects were 37 women, of whom three were patients with inner myometrial laceration, 23 were women without inner myometrial laceration who underwent cesarean section, and 11 were women in the first stage of labor. The three resected uteri were examined both macroscopically and microscopically. We measured the thickness of the wall of the uterine muscle at the widest point of the uterine corpus and the thickness of the myometrial wall at a transverse section of the uterine cervix, as well as the radius of the inner lumen at the widest point of the uterus in 23 women during cesarean section. We also measured the thickness of the myometrial wall at the widest point of the uterine corpus in 11 women at the end of the first stage of labor during ultrasonic examination. The data were then used to estimate the stress on the uterine muscle. RESULTS: The stress on the uterine cervix was stronger than that on the uterine corpus during labor. When the stress on the uterine muscle is stronger than a specific value, inner myometrial lacerations develop on the right and/or left side of the uterine cervix. These lacerations may involve large vessels. CONCLUSIONS: We have discovered another cause of postpartum hemorrhage which we have named inner myometrial laceration. These lacerations appeared to result from a strong stress on the uterine cervix caused by an abnormal rise in intrauterine pressure during labor.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
6/37. Dural puncture and corticotherapy as risks factors for cerebral venous sinus thrombosis.Dural puncture with corticosteroid could be a predisposing factor for cerebral venous thrombosis (CVT). A 35-year-old woman using oral contraception was treated with corticosteroid epidural infiltration for L5 radiculalgia. The following day a postural headache developed and accidental dural puncture was suspected. Four days later, she presented with fever and consciousness impairment requiring mechanical ventilation. magnetic resonance angiography (MRA) confirmed thrombosis of the superior sagittal sinus. Recanalization was observed three weeks later and the patient fully recovered. blood tests for thrombophilia showed a moderate decrease in the C protein level (chronometric activity 44%, N = 65-130). CVT has been reported after spinal anaesthesia or peridural anaesthesia with accidental puncture. After dural puncture the decrease of cerebrospinal fluid pressure induces a rostrocaudal sagging effect with traumatic damage to the fragile venous endothelial wall, and may trigger a venous vasodilatation with resultant stasis. CVT has also been described in patients after lumbar puncture and oral corticoid treatment for multiple sclerosis and after corticosteroid intrathecal infiltration. Therefore, corticosteroids can be considered as a potential additional procoagulant stimuli.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
7/37. High-pressure injection injuries to the hand.High-pressure injection injury hides the true extent of the lesions behind an apparent small and harmless puncture of the finger or the hand. Through clinical description, we wish to point out the need for prompt treatment to avoid mutilating and function-threatening complications. We wish to outline the role of the emergency physician who must be aware of the incidence of high-pressure injection injury and become accustomed to early referral to a surgeon, experienced in extensive surgical exploration, removal of foreign bodies, and rehabilitation. The open-wound technique gives the best results. We also point out that failure to refer may become an increasing focus of negligence claims.- - - - - - - - - - ranking = 6keywords = pressure (Clic here for more details about this article) |
8/37. Delayed presentation of superficial femoral artery injury: report of a case.We describe herein a patient who developed serious complications following a penetrating injury to the lower limb. There was minimal evidence of vascular injury on the initial presentation at the hospital; in particular the ankle systolic pressure was normal. Fourteen days following the initial injury, he was found to have a pseudoaneurysm of the superficial femoral artery associated with the arteriovenous fistula in his left thigh. The findings of this case suggest that a high index of suspicion and a careful clinical review is essential if vascular injuries and their complications are not to be missed.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
9/37. Cervical emphysema, pneumomediastinum, and pneumothorax following self-induced oral injury: report of four cases and review of the literature.Spontaneous rupture of the pulmonary alveoli after a sudden increase in intra-alveolar pressure is a common cause of pneumomediastinum, which is usually seen in healthy young men. Other common causes are traumatic and iatrogenic rupture of the airway and esophagus; however, pneumomediastinum following cervicofacial emphysema is much rarer and is occasionally found after dental surgical procedures, head and neck surgery, or accidental trauma. We present four cases of subcutaneous emphysema and pneumomediastinum with two secondary pneumothoraces after self-induced punctures in the oral cavity. They constitute an uncommon clinical entity that, to our knowledge, has not been reported in the literature. Its radiologic appearance, clinical presentation, and diagnosis are described.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
10/37. Migration of ventriculoperitoneal shunt into the heart--case report.A 76-year-old man underwent ventriculoperitoneal shunting for hydrocephalus after subarachnoid hemorrhage. Eighteen days after the shunt operation, fluoroscopy revealed the peritoneal catheter in the heart. Three-dimensional computed tomography demonstrated penetration of the catheter into the internal jugular vein. Under local anesthesia, part of the peritoneal catheter was pulled out through the cervical incision and cut off. The ends of the peritoneal catheter were connected so that the distal end was settled in the right atrium of the heart under fluoroscopic visualization. The migration of the peritoneal catheter into the heart presumably occurred because the subcutaneous wire guide of the shunt catheter perforated the internal jugular vein and the catheter was drawn into the heart through the internal jugular vein by the negative pressure of the vein and thoracic cavity.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
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