Craig Willette, Gianluca Bini, Marine Traverson, Julius M Liptak, Danielle Hollenbeck, Elizabeth A Maxwell, Carlos H de Mello Souza, Brandan Wustefeld-Janssens, Laura Selmic
{"title":"苯氧苄胺预处理对嗜铬细胞瘤犬术中心血管指标影响的回顾性评价。","authors":"Craig Willette, Gianluca Bini, Marine Traverson, Julius M Liptak, Danielle Hollenbeck, Elizabeth A Maxwell, Carlos H de Mello Souza, Brandan Wustefeld-Janssens, Laura Selmic","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>To compare cardiovascular outcomes in dogs undergoing adrenalectomy for pheochromocytoma with and without phenoxybenzamine pretreatment.</p><p><strong>Animals: </strong>A total of 65 medical records from dogs at 5 veterinary hospitals.</p><p><strong>Procedure: </strong>Records from January 2004 to December 2021 were evaluated for systolic, mean, and diastolic arterial pressures; numbers of hypertensive and hypotensive episodes; highest and lowest systolic arterial pressure differences; dose and duration of phenoxybenzamine; and presence of intraoperative arrhythmias. Phenoxybenzamine-pretreated dogs (Group PT, <i>n</i> = 33) and dogs not receiving phenoxybenzamine (Group N, <i>n</i> = 31) were compared. The Shapiro-Wilk test was used to test for normality, Student's <i>t</i>-test was used for normally distributed data, and Fisher's exact test was used for ordinal and categorical data. Multivariable logistic regression was used to assess effect of pretreatment with phenoxybenzamine on occurrence of hypotension and hypertension, allowing for adjustment for confounding variables (<i>P</i> < 0.05).</p><p><strong>Results: </strong>Median (range) phenoxybenzamine dose was 0.46 (0.08 to 2.0) mg/kg, PO, q12h. Peak systolic and mean arterial pressures, lowest systolic and mean arterial pressures, duration of hypertension, duration of sinus tachycardia, number of hypotensive episodes, and duration of hypotension were not different between groups. More hypertensive episodes (<i>P</i> = 0.01) and anesthetic events involving hypertension (<i>P</i> = 0.02) were recorded in Group PT than in Group N.</p><p><strong>Conclusion: </strong>In dogs undergoing adrenalectomy for pheochromocytoma, phenoxybenzamine pretreatment as administered did not offer any cardiovascular benefits based on the measured variables, and may be associated with more intraoperative hypertensive episodes.</p><p><strong>Clinical relevance: </strong>Intraoperative changes in cardiovascular variables are prevalent in dogs with pheochromocytoma undergoing adrenalectomy. Further evaluation of pretreatment with phenoxybenzamine is needed to determine its role in these cases.</p>","PeriodicalId":9429,"journal":{"name":"Canadian Veterinary Journal-revue Veterinaire Canadienne","volume":"65 12","pages":"1293-1301"},"PeriodicalIF":0.9000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11618959/pdf/","citationCount":"0","resultStr":"{\"title\":\"Retrospective evaluation of the influence of phenoxybenzamine pretreatment on intraoperative cardiovascular variables in dogs with pheochromocytoma.\",\"authors\":\"Craig Willette, Gianluca Bini, Marine Traverson, Julius M Liptak, Danielle Hollenbeck, Elizabeth A Maxwell, Carlos H de Mello Souza, Brandan Wustefeld-Janssens, Laura Selmic\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>To compare cardiovascular outcomes in dogs undergoing adrenalectomy for pheochromocytoma with and without phenoxybenzamine pretreatment.</p><p><strong>Animals: </strong>A total of 65 medical records from dogs at 5 veterinary hospitals.</p><p><strong>Procedure: </strong>Records from January 2004 to December 2021 were evaluated for systolic, mean, and diastolic arterial pressures; numbers of hypertensive and hypotensive episodes; highest and lowest systolic arterial pressure differences; dose and duration of phenoxybenzamine; and presence of intraoperative arrhythmias. Phenoxybenzamine-pretreated dogs (Group PT, <i>n</i> = 33) and dogs not receiving phenoxybenzamine (Group N, <i>n</i> = 31) were compared. The Shapiro-Wilk test was used to test for normality, Student's <i>t</i>-test was used for normally distributed data, and Fisher's exact test was used for ordinal and categorical data. Multivariable logistic regression was used to assess effect of pretreatment with phenoxybenzamine on occurrence of hypotension and hypertension, allowing for adjustment for confounding variables (<i>P</i> < 0.05).</p><p><strong>Results: </strong>Median (range) phenoxybenzamine dose was 0.46 (0.08 to 2.0) mg/kg, PO, q12h. Peak systolic and mean arterial pressures, lowest systolic and mean arterial pressures, duration of hypertension, duration of sinus tachycardia, number of hypotensive episodes, and duration of hypotension were not different between groups. More hypertensive episodes (<i>P</i> = 0.01) and anesthetic events involving hypertension (<i>P</i> = 0.02) were recorded in Group PT than in Group N.</p><p><strong>Conclusion: </strong>In dogs undergoing adrenalectomy for pheochromocytoma, phenoxybenzamine pretreatment as administered did not offer any cardiovascular benefits based on the measured variables, and may be associated with more intraoperative hypertensive episodes.</p><p><strong>Clinical relevance: </strong>Intraoperative changes in cardiovascular variables are prevalent in dogs with pheochromocytoma undergoing adrenalectomy. Further evaluation of pretreatment with phenoxybenzamine is needed to determine its role in these cases.</p>\",\"PeriodicalId\":9429,\"journal\":{\"name\":\"Canadian Veterinary Journal-revue Veterinaire Canadienne\",\"volume\":\"65 12\",\"pages\":\"1293-1301\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2024-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11618959/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Canadian Veterinary Journal-revue Veterinaire Canadienne\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"VETERINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Canadian Veterinary Journal-revue Veterinaire Canadienne","FirstCategoryId":"97","ListUrlMain":"","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}
Retrospective evaluation of the influence of phenoxybenzamine pretreatment on intraoperative cardiovascular variables in dogs with pheochromocytoma.
Objective: To compare cardiovascular outcomes in dogs undergoing adrenalectomy for pheochromocytoma with and without phenoxybenzamine pretreatment.
Animals: A total of 65 medical records from dogs at 5 veterinary hospitals.
Procedure: Records from January 2004 to December 2021 were evaluated for systolic, mean, and diastolic arterial pressures; numbers of hypertensive and hypotensive episodes; highest and lowest systolic arterial pressure differences; dose and duration of phenoxybenzamine; and presence of intraoperative arrhythmias. Phenoxybenzamine-pretreated dogs (Group PT, n = 33) and dogs not receiving phenoxybenzamine (Group N, n = 31) were compared. The Shapiro-Wilk test was used to test for normality, Student's t-test was used for normally distributed data, and Fisher's exact test was used for ordinal and categorical data. Multivariable logistic regression was used to assess effect of pretreatment with phenoxybenzamine on occurrence of hypotension and hypertension, allowing for adjustment for confounding variables (P < 0.05).
Results: Median (range) phenoxybenzamine dose was 0.46 (0.08 to 2.0) mg/kg, PO, q12h. Peak systolic and mean arterial pressures, lowest systolic and mean arterial pressures, duration of hypertension, duration of sinus tachycardia, number of hypotensive episodes, and duration of hypotension were not different between groups. More hypertensive episodes (P = 0.01) and anesthetic events involving hypertension (P = 0.02) were recorded in Group PT than in Group N.
Conclusion: In dogs undergoing adrenalectomy for pheochromocytoma, phenoxybenzamine pretreatment as administered did not offer any cardiovascular benefits based on the measured variables, and may be associated with more intraoperative hypertensive episodes.
Clinical relevance: Intraoperative changes in cardiovascular variables are prevalent in dogs with pheochromocytoma undergoing adrenalectomy. Further evaluation of pretreatment with phenoxybenzamine is needed to determine its role in these cases.
期刊介绍：
The Canadian Veterinary Journal (CVJ) provides a forum for the discussion of all matters relevant to the veterinary profession. The mission of the Journal is to educate by informing readers of progress in clinical veterinary medicine, clinical veterinary research, and related fields of endeavor. The key objective of The CVJ is to promote the art and science of veterinary medicine and the betterment of animal health.
A report suggesting that animals have been unnecessarily subjected to adverse, stressful, or harsh conditions or treatments will not be processed for publication. Experimental studies using animals will only be considered for publication if the studies have been approved by an institutional animal care committee, or equivalent, and the guidelines of the Canadian Council on Animal Care, or equivalent, have been followed by the author(s).
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