RESUMEN
BACKGROUND: Etomidate is frequently selected over propofol for induction of anaesthesia because of a putatively favourable haemodynamic profile, but data confirming this perception are limited. METHODS: Patients undergoing cardiac surgery were randomised to induction of anaesthesia with propofol or etomidate. Phase I (n=75) was conducted as open-label, whereas Phase II (n=75) was double blind. Mean arterial blood pressure (MAP) and boluses of vasopressor administered after induction were recorded. The primary endpoint was the area under the curve below baseline MAP (MAP-time integral) during the 10 min after induction. Secondary endpoints were the use of vasopressors over the same period, and the effect of blinding on the aforementioned endpoints. Groups were compared using regression models with phase and anaesthetist as factors. RESULTS: The mean difference between etomidate and propofol in the MAP-time integral below baseline was 2244 mm Hg s (95% confidence interval, 581-3906; P=0.009), representing a 34% greater reduction with propofol. Overall, vasopressors were used in 10/75 patients in the etomidate group vs 21/75 in the propofol group (P=0.38), and in 20/74 patients during the blinded phase vs 11/76 during the open-label phase (P=0.31). The interaction between randomisation and phase (open-labelled or blinded) was not significant for either primary (P=0.73) or secondary endpoints (P=0.90). CONCLUSIONS: Propofol caused a 34% greater reduction in MAP-time integral from baseline after induction of anaesthesia than etomidate, despite more frequent use of vasopressors with propofol, confirming the superior haemodynamic profile of etomidate in this context. The proportion of patients receiving vasopressors increased slightly, albeit not significantly, in both groups in the blinded phase. CLINICAL TRIAL REGISTRATION: Australian and New Zealand Clinical Trials Registry, ACTRN12614000717651.
Asunto(s)
Anestesia General/métodos , Procedimientos Quirúrgicos Cardíacos/métodos , Etomidato , Hemodinámica/efectos de los fármacos , Hipnóticos y Sedantes , Propofol , Adulto , Anciano , Anciano de 80 o más Años , Presión Arterial , Puente de Arteria Coronaria , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad , Resultado del Tratamiento , Vasoconstrictores/uso terapéuticoRESUMEN
Background: Present on arrival infection is a common indication for admission of surgical patients initially managed at primary care level. We aimed to describe the demographic and disease profile of patients presenting with infection requiring surgical management, describe determinants of patients' health-seeking behaviour, and identify barriers to care.Methods: A prospective descriptive questionnaire-based study was conducted at Edenvale General Hospital between February 2014 and October 2016. Minors were excluded. Results: Eighty-nine patients participated. Abscesses (26%), diabetic foot (22%), and cellulitis (16%) were the commonest categories of infection necessitating admission. The majority of patients were South African (88%), Black African (82%), males (58%), without medical aid (99%), who were not formally employed (58%), were from poor households (74%), inhabited some form of formal housing (90%), were in charge of decisions regarding personal health (80%), and first sought help at the primary care level (71%). Delay to presentation was noted in 69% of patients, and delay to referral in 46%. Age, race, history of diabetes, and main source of monthly income were significant variables in delayed presentation (p<0.05), and age and level of care on first contact in delayed referral (p<0.05) in the study sample. The most common reason for delay to presentation (84%) and referral (61%) was patients' belief that their problem would resolve spontaneously. Conclusions: Patients' socio-economic status, past medical history, demographics, level of first contact with the health care system, and perceptions of their own health contributed to delays in seeking and receiving care in the study sample. These delays may be addressed by interventions that target the availability, accessibility, acceptability and affordability of health care services
Asunto(s)
Pacientes , Sudáfrica , Infección de la Herida Quirúrgica/patologíaRESUMEN
We evaluated the efficacy of cromolyn sodium in the management of contact lens patients with GPC. Fourteen of 20 patients (70%) with moderate to severe giant papillary conjunctivitis (GPC) were able to continue wearing contact lenses with the use of 4% sodium cromolyn eye drops. These patients had all failed to stay symptom free with our standard method of treatment (i.e., discontinuing contact lens wear for 1-2 weeks; improving lens care; and refitting with different lens designs and/or polymers). This study examined the indications, therapeutic regimen, complications, and patient response to the use of sodium cromolyn in contact lens patients with GPC.