Componentes volátiles de las hojas de Pimenta racemosa var racemosa(Mill. ) JW Moore (Myrtaceae) de Táchira – Venezuela / Volatile compounds of Pimenta racemosa var racemosa (Mill. ) JW Moore (Myrtaceae) leaves from Táchira-Venezuela

Pimenta racemosa var. racemosa (Mill.) J.W. Moore, is a Caribbean arboreal plant belonging to the family Myrtaceae with a special interest in their leaves for the production of essential oil, commonly known as "Bay-Rum". Steam distillation of fresh leaves collected in April 2012 produced two types of essential oil, one of these resulted lighter than water and was named (AL) and the other one heavier than water (AP). Gas chromatography/mass spectrometry analysis showed the presence of 17 components constituting 99.9 percent for AL, being the major compounds: eugenol (60.4 percent), myrcene (11.7 percent), chavicol (6.0 percent), limonene (5.4 percent) and linalool (4.4 percent); for the AP, 13components were identified (98.3 percent) from which eugenol (82.9 percent) and chavicol (9.3 percent) were in major proportions.

Pimenta racemosa var. racemosa (Mill.) J.W. Moore, es una planta caribeña, arbórea, perteneciente a la familia Myrtaceae y con un especial interés en sus hojas para la producción del aceite esencial comúnmente conocido como “Bay-Rum”. La destilación por arrastrecon vapor de las hojas frescas colectadas en abril 2012 produjo dos tipos de aceites esenciales, uno ligero (AL) y otro más pesado que elagua (AP). El análisis de sus componentes volátiles por cromatografía de gases/espectrometría de masas mostró 17 componentes lo que constituye el 99,9 por ciento del AL de los cuales los mayoritarios fueron eugenol (60,4 por ciento), mirceno (11,7 por ciento), chavicol (6,0 por ciento), limoneno (5,4 por ciento) ylinalool (4,4 por ciento); para el AP, 13 componentes fueron identificados (98,3 por ciento) de los cuales eugenol (82,9 por ciento) y chavicol (9,3 por ciento) fueron los mayoritarios.

Diagnóstico de infarto miocárdico perioperatorio dentro de las primeras 72 horas posteriores a la cirugía cardiaca / Diagnosis of perioperative myocardial infarction within the first seventy-two hours after cardiac surgery

One of the most frequent complications of cardiac surgery is the perioperative myocardial infarction (PMI). Incidence of PMI shows a wide variation because an accurate detection of this complication is difficult in the early postoperative stage. The objectives of the present study were to determine in our population of patients the incidence of PMI during the first seventy two hours after cardiac surgery as well as associations among the accepted criteria to diagnose this complication. PATIENTS AND METHODS: One hundred sixty four adults patients undergoing elective cardiac surgery were studied. With baselines preoperative studies, serial electrocardiographic, enzymatic [(determination of serum creatine kinase isoenzyme (CK-MB)] and echocardiographic studies were performed during the first 72 hours after cardiac surgery. Diagnosis of PMI was established with two or all the three positive criteria [electrocardiographic (ECG), enzymatic (CK-MB) and echocardiographic (ECHO)]. RESULTS: In 24 (15%) patients PMI was diagnosed. In this group 13 (54%) all the three criteria were positive. In 8 (33%) patients CK-MB and ECHO were positive. In 3 (13%) patients CK-MB and ECG were positive. CONCLUSIONS: In our population the incidence of PMI (15%) is agree with the reported in previous studies. In most of cases of PMI all the three diagnostic criteria are positive. When diagnosis is established only with two criteria, in most of cases these are CK-MB and ECHO.