Articles by Ronald Lyman, DVM, Dipl. ACVIM

Consider ACTH stimulation test when you suspect canine hyperadrenocorticism

Nov 1, 2008
By: Ronald Lyman, DVM, Dipl. ACVIM

Increased ACTH secretion from the pituitary gland is the most commonly recognized cause of canine hyperadrenocorticism (HAC).

The effect of hydration status on echocardiographic measurements of normal cats

Sep 1, 2008
By: Robert Runde, VMD, Ronald Lyman, DVM, Dipl. ACVIM

In a recent article (The Effect of Hydration Status on the Echocardiographic Measurements of Normal Cats, by Campbell, F.E. & Kittleson, M.D. J Vet Intern Med 2007), the authors examined the effect of hydration status on echocardio-graphic findings in normal cats.

Xylitol, a sweetener for people, a potential killer for dogs

Jan 1, 2008
By: Ronald Lyman, DVM, Dipl. ACVIM, Pierre Bichsel, DVM, Dipl. ECVN, Dipl. ACVIM (neurology)

Xylitol, a so-called wood sugar, is a five-carbon sugar alcohol that is found in the fibers of many fruits and vegetables.

Brain infarction in canine patients

Apr 1, 2007
By: Beatrix Nanai, DVM, Ronald Lyman, DVM, Dipl. ACVIM

Although brain infarction is the third leading cause of death in humans, cerebrovascular accidents are rarely reported in veterinary literature.

Mapping the pathogenesis of canine distemper virus

Nov 1, 2006
By: Beatrix Nanai, DVM, Ronald Lyman, DVM, Dipl. ACVIM

Canine distemper is a debilitating, persistent infection of the nervous system, caused by an enveloped single-stranded RNA virus that belongs to the family of Paramixovirid?, Morbillivirus genus.

Otitis media and interna: Look for neurological signs

Aug 1, 2006
By: Beatrix Nanai, DVM, Ronald Lyman, DVM, Dipl. ACVIM

The practicing small animal veterinarian often has to face small animals with otitis externa. While not as common, otitis media and interna likely cause neurological signs.

Rhinoscopy combined with sinuscopy in canine patients with nasal signs

Jul 1, 2006
By: Beatrix Nanai, DVM, Ronald Lyman, DVM, Dipl. ACVIM

For some time rhinoscopy alone has been the procedure most often chosen to obtain visual and histopathologic evidence of the disease process(es) occurring in canine patients with persistent nasal signs.

Status epilepticus: theoretical and clinical considerations

Jun 1, 2006
By: Beatrix Nanai, DVM, Ronald Lyman, DVM, Dipl. ACVIM

Two or more seizures without complete recovery of consciousness between seizures, or persistent seizure activity for more than 30 minutes constitute the definition of status epilepticus (SE) in human medicine (Treatment of Convulsive Status Epilepticus. JAMA 1993; 270:854-9).

Hypertensive encephalopathy in feline patients

Mar 1, 2006
By: Beatrix Nanai, DVM, Ronald Lyman, DVM, Dipl. ACVIM

Hypertensive encephalopathy (HyE) is an acute neurological syndrome, which can be characterized by any of the following clinical signs: nausea, vomiting, abnormal vocalization, ataxia, tremors, photophobia, blindness, frequent blinking, head pressing, stupor and/or seizure activity.

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