PubMed Health⌕ Search

Biomedical subjects

J Rodríguez

Publications and source records attributed to J Rodríguez.

313 records · Page 18Linked to original sources
PubMedDate not supplied

Hb Lepore Washington-Boston in two Mexican mestizo families.

Two Mexican mestizo families with Hb Lepore Washington-Boston are described. One family is from Cordova, in the State of Veracruz, in the East coast of Mexico: the proband is a 44-year old asymptomatic male with italian ancestors; the other family is from the city of Durango, State of Durango, in the northwestern part of the country: the propositus is a 32-year old pregnant female with French ancestors. In both cases the Hb Lepore was identified by alkaline electrophoresis and characterized by high performance liquid chromatography and PCR with specific probes flanking the deletion frame. The beta-haplotype in both families was +(-)-(-)-(++), the commonest beta-haplotype reported with this mutation. This paper describes the first cases of this entity in Mexico.

Adult↗
PubMedDate not supplied

[Explicit and implicit memory during inhalation and intravenous anesthesia].

OBJECTIVE: Patients rarely report memory or knowledge of surgery after general anesthesia. During apparently adequate surgical anesthesia, however, information processing of high level functions, such as language comprehension and learning, can continue unconsciously. Our objective is to assess whether different anesthetic techniques (two inhalational and two intravenous) guarantee the absence of both types of memory. PATIENTS AND METHOD: One hundred patients were randomly assigned to receive the following anesthetic procedures: desflurane/N2O (group 1), isoflurane/N2O (group 2), fentanyl/N2O (group 3) and total intravenous anesthesia (group 4). A cassette with the same music was played in all cases, and an order requiring a nonverbal response was given to 15 randomly chosen patients in each group. Response was evaluated at a visit 24 to 48 hours after surgery. Fifteen patients, therefore, constituted the study group for each anesthetic procedure, and 10 patients formed the control group. We assessed the presence of explicit memory in a structured interview, and implicit memory by way of the relation between the number of times the nonverbal order was obeyed and the time of the interview. RESULTS: Explicit memory was absent in all patients. The presence of implicit memory was confirmed, however, in the isoflurane (p = 0.02) group. Significant differences between the isoflurane group and both the desflurane and total intravenous anesthesia groups (p = 0.03) were found. CONCLUSION: Explicit memory was absent with all four anesthetic techniques used in our study. Implicit memory was more difficult to inhibit, however, with isoflurane/N2O.

Adolescent↗
PubMedDate not supplied

[Arm adduction does not increase block extension in anesthesia of the brachial plexus by the axillary approach].

INTRODUCTION: Arm abduction of 90 degrees during injection of local anesthetic followed by adduction of the arm has been recommended traditionally to favor proximal distribution of local anesthetic and extension of the blockade in the brachial plexus by the axillary route. A recent study demonstrated that there are no clinical or radiological differences between axillary blockades performed with abduction or adduction. OBJECTIVE: To compare the extension of sensory blockade in axillary anesthesia performed with adduction or abduction. MATERIAL AND METHODS: Forty patients were randomly distributed in two groups, 20 in the adduction group and 20 in the abduction group. The axillary catheter was inserted 3 cm in the proximal direction and a mixture of 40 ml of 1.5% mepivacaine without adrenaline and 4 ml of 8.4% bicarbonate soda was injected into each patient. RESULTS: No statistically significant differences in extension of sensory blockade, including circumflex, musculocutaneous and radial nerve blockade, were observed. CONCLUSIONS: Axillary rotation of the arm is not a determining factor in sensory blockade in brachial plexus anesthesia by the axillary route.

Anesthetics, Local↗
PubMedDate not supplied

[Post-obstructive pulmonary edema after adenoid-amygdalectomy].

A two-years-old boy with Down's Syndrome and a small interauricular communication was given priority scheduling for adenoidectomy and tonsillectomy to correct subacute obstruction of the upper airway. The only noteworthy event during surgery was an SpO2 of 92% during mechanical ventilation with FiO2 of 0.5 from no apparent cause. The patient suffered acute respiratory insufficiency due to the post-obstructive pulmonary edema in the hours immediately following surgery. The incidence of post-obstructive pulmonary edema is higher than might be expected, as symptoms can be interpreted as aspiration pneumonitis or left ventricular failure. Given the high prevalence of adenoiditis and tonsillitis with varying degrees of airway obstruction in children, we consider it useful to report this case. Such patients should be monitored carefully in the early postoperative period.

Adenoidectomy↗
PubMedDate not supplied

Infraclavicular brachial plexus block effects on respiratory function and extent of the block.

BACKGROUND AND OBJECTIVES: Axillary block is devoid of severe respiratory complications. However, incomplete anesthesia of the upper limb is the main disadvantage of the technique. Theoretically, the more proximal infraclavicular approach would produce a more extensive block without the risk of pneumothorax. However, neither its effects on respiratory function nor a detailed characterization of the extent of neural block has been assessed. The goal of this study was to evaluate the possible changes in respiratory function and also the extent of the block after infraclavicular block. METHODS: We performed an infraclavicular block with a mixture of 40 mL 1.5% plain mepivacaine and 4 mL 8.4% sodium bicarbonate in 20 patients. Forced expiratory volumes were measured before and 15 minutes after the injection of local anesthetic, and sensory and motor block were evaluated at 10 and 20 minutes. RESULTS: We did not find significant differences from baseline in the forced expiratory volumes in any of the patients. Axillary and musculocutaneous nerve distributions had the lowest rate of sensory block at 20 minutes. CONCLUSIONS: Infraclavicular block does not produce a reduction in respiratory function.

Anesthetics, Local↗