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Biomedical subjects

M Maroof

Publications and source records attributed to M Maroof.

At least 19 recordsLinked to original sources
PubMed2003

A comparison of the laryngeal mask airway and PA(Xpress) for short surgical procedures.

Sixty adult patients undergoing minor peripheral surgery under general anaesthesia were randomly allocated to receive either the laryngeal mask airway (laryngeal mask airway; size 4 for females and size 5 for males) or the PAXpress (adult size), inserted by a single operator with experience of > 50 insertions of each device. The laryngeal mask airway was correctly placed on the first attempt in 27 patients (90%) compared with 20 patients (67%) when using the PAXpress (p < 0.01). No patient required more than two attempts at insertion and there were no failures with the laryngeal mask airway, compared with four (13%) who needed three attempts and two failures (7%) with the PAXpress (p < 0.001 and p < 0.01, respectively). Mean (SD) total placement time was shorter with the laryngeal mask airway [24.6 (3.1) s] than with the PAXpress[35.4 (2.5) s; p < 0.01]. The most common complication was sore throat, which occurred less frequently with the laryngeal mask airway (8 patients; 26%) than with the PAXpress (15 patients; 53.5%; p < 0.001).

Adult↗
PubMed1997

Intra-operative suggestions reduce incidence of post hysterectomy emesis.

The influence of therapeutic intraoperative auditory suggestions on the incidence and severity of emetic episodes was investigated in 50 adults ASA I and II patients undergoing elective abdominal hysterectomy. The patients were randomly divided into two groups, each consisting of 25 patients. In group I, a blank tape was played and in group II, positive suggestion was played via headphones throughout the anaesthetic period. It was observed that there was statistically significant difference (P < 0.05) between the incidence of vomiting in group I (60%) and group II (36%). The number of vomiting episodes per patient in group I was 3.1 +/- 1.2 as compared to 1.7 +/- 0.6 in group II. This difference was statistically significant. The patients requiring rescue antiemetic was significantly higher (P < 0.05) in group I (66.6%) as compared to group II (22.2%). It is concluded that positive therapeutic suggestion may be considered as an alternative to antiemetic therapy.

Adult↗
PubMed1996

Modified Laryngeal Mask Airway--a useful aid to fiberoptic intubation.

Modified Laryngeal Mask (MLMA) aided fiberoptic intubation (FOI) using larger than 6 mm ID endotracheal tube was studied in 25 adult patients and compared to unaided FOI in another 25 patients. MLMA aided FOI was successful in 96% cases compared to 56% in the unaided group. Furthermore, the time to successful intubation was increased by 67.1% when FOI was attempted without MLMA aid which was statistically significant (P < 0.001). However, maximum fluctuations in the heart rate and mean arterial pressure in the immediate post-intubation period were statistically insignificant between the groups. We conclude that MLMA not only adds to success rate of FOI but also significantly reduce the FOI time in adult patients.

Adult↗
PubMed1995

Hypobaric spinal anaesthesia with bupivacaine (0.1%) gives selective sensory block for ano-rectal surgery.

Twenty adult male patients undergoing anorectal surgery in the jackknife position under spinal anaesthesia were studied for the anaesthetic properties of 5 ml hypobaric 0.1% bupivacaine. The patients were positioned in the prone, jack-knife position with a pillow under the hips and with an operating table break angulation of 30 degrees with head down tilt of 20 degrees. In this position a 25-gauge Quincke spinal needle was inserted intrathecally through L3-4 and 5 ml solution, prepared by mixing 1 ml bupivacaine 0.5% with 4 ml of distilled water with a specific gravity of 1.001 at 20 degrees C, was given over 15-20 sec. Onset time, progression and upper level of sensory blockade evaluated by pin prick, and the extent of motor block (1 = full motor movement at ankle and knee joint, 2 = restricted motor movements, 3 = full motor block, no movements) were measured at one minute intervals for the first five minutes, then every five minutes for 30 min. The number of dermatomes blocked was also noted. The median level of cephalad sensory blockage was of L1, with a range from T10-L3. On average, nine dermatomes were blocked (range 7-12). Motor blockade was not observed in any patient. Changes in heart rate and blood pressure were minimal. The average duration of postoperative analgesia was 339.5 +/- 182.9 min. Post-spinal headache was not observed in any patients. In conclusion, 5 ml intrathecal hypobaric bupivacaine, 0.1%, provided excellent perioperative analgesia without motor blockade and haemodynamic stability in patients undergoing anorectal surgery in jackknife position.

Adolescent↗
PubMed1995

CPAP with air and oxygen to non-ventilated lung improves oxygenation during one lung anaesthesia.

Ten adult patients undergoing one lung ventilation for elective thoracotomy were selected. All these patients failed to maintain oxygen saturation (SaO2) > 90% despite administration of 100% oxygen to the non-ventilated lung (NVL). These patients were studied for the efficacy of continuous positive airway pressure (CPAP) of the NVL using air and oxygen combination (FiO20.5) employing a variable FiO2CPAP system. It was observed that application of CPAP (5-10 cm H2O) with a mixture of air and oxygen to the NVL increased the SaO2 > 90% in all these patients. This could be attributed to nitrogen in air which prevented absorption atelectasis in the NVL. This produced a better ventilation/perfusion ratio and hence the increased oxygen saturation.

Adult↗
PubMed1994

Post-anaesthetic pulmonary oedema following upper airway obstruction.

Twelve cases of post-anaesthetic pulmonary oedema (PO) secondary to upper airway obstruction (UAO) are reported. All were adult male patients undergoing uneventful elective surgical procedure under general anaesthesia. Post-anaesthetic laryngospasm was the single most important factor for the upper airway obstruction (UAO) in 5 (41.6%) patients. PO secondary to partial UAO in drowsy patients was observed in 4 (33.3%) patients. UAO due to foreign body was responsible for PO in two patients. A combination of negative intrathoracic pressure, hypoxia and associated hyperadrenergic state were the most likely causes of PO in these patients with UAO. Early recognition, maintenance of patent airway and adequate oxygenation via face mask or endotracheal tube with mechanical ventilation resolved the syndrome within 6-36 hours in all of these patients. Invasive haemodynamic monitoring or aggressive drug therapy were not applied in any of the patients. A heightened awareness among anaesthesiologists of the varied causes of post-anaesthetic UAO leading to PO may help reduce the occurrence and facilitate early management of the potential complications.

Adolescent↗