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Complete blood cell count
To the Editor: The review by May et al1 of 3 neglected numbers in the complete blood cell count (CBC) was a good reminder to look more closely at the results of the CBCs we often order in primary care. I was surprised to see no mention of the red cell distribution width in relation to another cardiovascular disorder—obstructive sleep apnea.2,3 I wonder if the authors would comment on this association?
- May JE, Marques MB, Reddy VVB, Gangaraju R. Three neglected numbers in the CBC: The RDW, MPV, and NRBC count. Cleve Clin J Med 2019; 86(3):167–172. doi:10.3949/ccjm.86a.18072
- Sökücü SN, Karasulu L, Dalar L, Seyhan EC, Altın S. Can red blood cell distribution width predict severity of obstructive sleep apnea syndrome? J Clin Sleep Med 2012; 8(5):521–525. doi:10.5664/jcsm.2146
- Yousef AM, Alkhiary W. The severity of obstructive sleep apnea syndrome is related to red cell distribution width and hematocrit values. J Sleep Disord Ther 2015; 4(2):1000192. doi:10.4172/2167-0277.1000192
To the Editor: The review by May et al1 of 3 neglected numbers in the complete blood cell count (CBC) was a good reminder to look more closely at the results of the CBCs we often order in primary care. I was surprised to see no mention of the red cell distribution width in relation to another cardiovascular disorder—obstructive sleep apnea.2,3 I wonder if the authors would comment on this association?
To the Editor: The review by May et al1 of 3 neglected numbers in the complete blood cell count (CBC) was a good reminder to look more closely at the results of the CBCs we often order in primary care. I was surprised to see no mention of the red cell distribution width in relation to another cardiovascular disorder—obstructive sleep apnea.2,3 I wonder if the authors would comment on this association?
- May JE, Marques MB, Reddy VVB, Gangaraju R. Three neglected numbers in the CBC: The RDW, MPV, and NRBC count. Cleve Clin J Med 2019; 86(3):167–172. doi:10.3949/ccjm.86a.18072
- Sökücü SN, Karasulu L, Dalar L, Seyhan EC, Altın S. Can red blood cell distribution width predict severity of obstructive sleep apnea syndrome? J Clin Sleep Med 2012; 8(5):521–525. doi:10.5664/jcsm.2146
- Yousef AM, Alkhiary W. The severity of obstructive sleep apnea syndrome is related to red cell distribution width and hematocrit values. J Sleep Disord Ther 2015; 4(2):1000192. doi:10.4172/2167-0277.1000192
- May JE, Marques MB, Reddy VVB, Gangaraju R. Three neglected numbers in the CBC: The RDW, MPV, and NRBC count. Cleve Clin J Med 2019; 86(3):167–172. doi:10.3949/ccjm.86a.18072
- Sökücü SN, Karasulu L, Dalar L, Seyhan EC, Altın S. Can red blood cell distribution width predict severity of obstructive sleep apnea syndrome? J Clin Sleep Med 2012; 8(5):521–525. doi:10.5664/jcsm.2146
- Yousef AM, Alkhiary W. The severity of obstructive sleep apnea syndrome is related to red cell distribution width and hematocrit values. J Sleep Disord Ther 2015; 4(2):1000192. doi:10.4172/2167-0277.1000192
Acute liver failure
To the Editor: In the article by Drs. Singh et al in your June issue, I was surprised that the role of hepatitis delta wasn’t mentioned as a potential cause of acute liver failure. My understanding is that this peculiar virus can only infect those with hepatitis B surface antigenemia, but when it does, it results in far more serious liver injury, including acute liver failure in some.
To the Editor: In the article by Drs. Singh et al in your June issue, I was surprised that the role of hepatitis delta wasn’t mentioned as a potential cause of acute liver failure. My understanding is that this peculiar virus can only infect those with hepatitis B surface antigenemia, but when it does, it results in far more serious liver injury, including acute liver failure in some.
To the Editor: In the article by Drs. Singh et al in your June issue, I was surprised that the role of hepatitis delta wasn’t mentioned as a potential cause of acute liver failure. My understanding is that this peculiar virus can only infect those with hepatitis B surface antigenemia, but when it does, it results in far more serious liver injury, including acute liver failure in some.
Stress testing
To the Editor: I was delighted to see an article addressing the overuse of stress tests in asymptomatic individuals.1 I still think, however, that one could really look at the issue a little further. In truly asymptomatic individuals, even those with established coronary heart disease, what is the value of the “annual stress echocardiogram,” often done in cardiologist’s offices? I was perturbed a bit by the statement, “a physician may consider ordering exercise electrocardiography in asymptomatic adults at intermediate risk of coronary heart disease.” Are there data to suggest the number needed to treat or the number needed to harm? I was sobered by the results of the Detection of Ischemia in Asymptomatic Diabetics trial,2 which showed no benefit in screening patients with type 2 diabetes with stress myocardial perfusion imaging (a technique probably more costly but more accurate than stress echocardiography).
I understand that bold statements about the lack of usefulness of the stress test in asymptomatic individuals might be misinterpreted by payers as a justification for denying coverage, but it would provide more help for those of us in primary care who are trying to dissuade patients from inappropriate and potentially harmful testing.
- Smith CD, Alguire PC. Is cardiac stress testing appropriate in asymptomatic adults at low risk? Cleve Clin J Med 2014; 81:405–406.
- Young LH, Wackers FJ, Chyun DA, et al; DIAD Investigators. Cardiac outcomes after screening for asymptomatic coronary artery disease in patients with type 2 diabetes: the DIAD study: a randomized controlled trial. JAMA 2009; 301:1547–1555.
To the Editor: I was delighted to see an article addressing the overuse of stress tests in asymptomatic individuals.1 I still think, however, that one could really look at the issue a little further. In truly asymptomatic individuals, even those with established coronary heart disease, what is the value of the “annual stress echocardiogram,” often done in cardiologist’s offices? I was perturbed a bit by the statement, “a physician may consider ordering exercise electrocardiography in asymptomatic adults at intermediate risk of coronary heart disease.” Are there data to suggest the number needed to treat or the number needed to harm? I was sobered by the results of the Detection of Ischemia in Asymptomatic Diabetics trial,2 which showed no benefit in screening patients with type 2 diabetes with stress myocardial perfusion imaging (a technique probably more costly but more accurate than stress echocardiography).
I understand that bold statements about the lack of usefulness of the stress test in asymptomatic individuals might be misinterpreted by payers as a justification for denying coverage, but it would provide more help for those of us in primary care who are trying to dissuade patients from inappropriate and potentially harmful testing.
To the Editor: I was delighted to see an article addressing the overuse of stress tests in asymptomatic individuals.1 I still think, however, that one could really look at the issue a little further. In truly asymptomatic individuals, even those with established coronary heart disease, what is the value of the “annual stress echocardiogram,” often done in cardiologist’s offices? I was perturbed a bit by the statement, “a physician may consider ordering exercise electrocardiography in asymptomatic adults at intermediate risk of coronary heart disease.” Are there data to suggest the number needed to treat or the number needed to harm? I was sobered by the results of the Detection of Ischemia in Asymptomatic Diabetics trial,2 which showed no benefit in screening patients with type 2 diabetes with stress myocardial perfusion imaging (a technique probably more costly but more accurate than stress echocardiography).
I understand that bold statements about the lack of usefulness of the stress test in asymptomatic individuals might be misinterpreted by payers as a justification for denying coverage, but it would provide more help for those of us in primary care who are trying to dissuade patients from inappropriate and potentially harmful testing.
- Smith CD, Alguire PC. Is cardiac stress testing appropriate in asymptomatic adults at low risk? Cleve Clin J Med 2014; 81:405–406.
- Young LH, Wackers FJ, Chyun DA, et al; DIAD Investigators. Cardiac outcomes after screening for asymptomatic coronary artery disease in patients with type 2 diabetes: the DIAD study: a randomized controlled trial. JAMA 2009; 301:1547–1555.
- Smith CD, Alguire PC. Is cardiac stress testing appropriate in asymptomatic adults at low risk? Cleve Clin J Med 2014; 81:405–406.
- Young LH, Wackers FJ, Chyun DA, et al; DIAD Investigators. Cardiac outcomes after screening for asymptomatic coronary artery disease in patients with type 2 diabetes: the DIAD study: a randomized controlled trial. JAMA 2009; 301:1547–1555.