Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Needle cricothyrotomy is a safe, relatively easy procedure and has been described to enable pulmonary ventilation for patients in both elective and emergency situations. Conventional IV cannulae are short, thin-walled, and easily kinked and, therefore, do not provide a secure system to jet oxygen into the trachea. The vessel dilators of most 7-9 French introducer kits are firm, pliable, resist kinking, and can be passed easily into the tracheal lumen. We describe our experience with the use of vessel dilator cricothyrotomy to oxygenate and ventilate the lungs of patients in emergency and elective situations.
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Surgical repair of hip fracture and total hip arthroplasty are primarily performed on elderly patients. Patients presenting for hip fracture surgery have a high prevalence of preoperative medical problems and may require medical stabilization before surgery. Regional anaesthesia for hip fracture repair may be contraindicated due to perioperative pharmacologic prophylaxis for deep venous thrombosis. ⋯ Intraoperative instability with hypoxaemia, hypotension and cardiac arrest may follow impaction of the femoral prosthesis and are related to absorption of acrylic cement monomers and pulmonary embolism of fat, air, and platelet-fibrin aggregates. Postoperative deep venous thrombosis is common and the incidence may be reduced with epidural anaesthesia. Operative mortality is less than one per cent and pulmonary embolism is the commonest cause of death.(ABSTRACT TRUNCATED AT 250 WORDS)
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Randomized Controlled Trial Comparative Study Clinical Trial
Epidural anaesthesia for caesarean section: comparison of two injection techniques.
Two techniques of injection for epidural anaesthesia for Caesarean sections were studied. Forty-five patients were randomly divided into two groups. Patients in Group I received 20 ml of lidocaine two per cent with epinephrine via the needle at a rate of 5 ml.30 sec-1 after a 3 ml test dose. ⋯ The incidence of hypotension was 52.2 per cent in Group I and 13.6 per cent in Group II (P = 0.014). There was no significant difference in maternal and umbilical venous lidocaine concentrations. We conclude that injection in fractional doses is a safer and more efficient technique for epidural anaesthesia for Caesarean section.