Stress Response to Laryngoscopy:Comparison between Macintoshand Mccoy’s Type Laryngoscope Blades
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 1
Abstract
Introduction:Laryngoscopy and intubation is known to cause exaggerated hemodynamic response and increased intracranial pressure. Earlier studies have shown that the type of laryngoscope blade influences the degree of hemodynamic response to endotracheal intubation. The aim of the study was to to compare the stress response to laryngoscopy and endotracheal intubationwhile using Macintosh and McCoy type blades. Materials & Methods:It is a prospective, comparative study including 60 patients undergoing various surgical procedures requiring general anaesthesia and endotracheal intubation between age group 20-50 years of both sexes with ASA grade 1 and 2 were chosen. The 60 cases were divided into two groups randomly (using table of random numbers): Group A: 30 Patients undergoing laryngoscopy with the Macintosh blade (size 3) and; Group B: 30 patients undergoing laryngoscopy with the McCoy blade (size 3). After induction and neuromuscular blockade pre-intubation pulse and mean arterial pressure (MAP) was recorded. Orotracheal intubation was attempted at this stage using laryngoscope blade assigned to respective group. Pulse and MAP was recorded while the blade was being inserted in vallecula. Similar pulse and blood pressure was taken at 2 minute and 5 minute after laryngoscopy. Ease of intubation was noted by knowing total time required for intubation, need for BURP maneuver and occurrence of any complication. Data was analyzed using SPSS software ver. 21. Results: Time for Laryngoscopy was significantly less with McCoy blade as compared to Macintosh blades (16.2 sec vs 19.55 sec; p<0.01). BURP manuver was never required with Mccoy blade but with Macintosh blade it was required in 36.7% of patients (p<0.01). Both groups were comparable in terms of baseline hemodynamic parameters. Post-laryngoscopy and Intubation till 2 minutes, heart rate and mean arterial pressures were significantly higher with Macintosh group compared to Mccoy group. Conclusion: McCoy’s blade provides better visualization of larynx and intubating conditions with minimal haemodynamic response to laryngoscopy
Authors and Affiliations
Jayshree Vaswani, Chirag Malik, Yogesh Bhalerao, Varsha Vyas, Kirtika Chedda
Keywords
Related Articles
- EP ID EP590324
- DOI 10.9790/0853-1601087680
- Views 67
- Downloads 0
A study to assess the symptoms of anxiety among medical students with internet addiction
.
Pre-Senile cataract: Analytical study
Presenile cataract refers to an onset that occurs at any time from early adult life to age 60 years. Risk factors for presenile cataract include family history; refractive error such as high myopia, metabolic disease suc...
Pure squamous cell carcinoma of the breast in a male
Primary squamous cell carcinoma of the breast is an extremely rare malignancy. It represents less than 0.1% of all primary invasive breast cancer. We present a case of pure squamous cell carcinoma of the breast in a male...
Healthcare Givers’ Factors that Contribute to Non-Adherence to Tuberculosis Treatment among Tb Patients in Kericho and Nakuru Counties, Kenya
Background:Tuberculosis (TB) continues to be a major cause of high morbidity and mortality in Kenya. Adherence to TB treatment is one of the interventions that lead to increase in cure rate thus reducing mortality and em...
Study of Relationship between PlasmaHomocysteine Levels andGestationalhypertension
A case control study comprising of 111 participants with 50 cases and 61 controls was performed. A fasting sample of plasma homocysteine was obtained from all the cases and controls. Plasma homocysteine was measured usin...