Okay, so which is it: sleep apnea or laryngospasm, being that both can cause you to abruptly wake in the middle of the night gasping for breath?

Both conditions – sleep apnea and sleep related laryngospasm – are described the same:

• Suddenly awakening unable to breathe
• Abruptly awakening gasping for breath
• Waking up in the middle of the night choking and struggling to breathe

And the “gasping for air” from laryngospasm in the middle of the night is just as freaking frightening as the “choking sensation” of sleep apnea.

Data on Laryngospasm
• The vocal cords suddenly seize and close when you’re inhaling, blocking the airway.

• The brain senses the lack of oxygen and awakens you.

• By then you’re oxygen-deprived and realize you can’t breathe.

• The experience sometimes makes people bolt upright in bed or leap out of bed.

• The closed airway does not open when you sit up because the cause is not related to gravity causing the tongue to collapse onto the airway while lying flat.

• Lasts one to two minutes, or possibly seconds, during which speech is not possible.

• As the vocal cords begin reopening, one’s inhalations create a high pitch sound (stridor). The stridor may be loud enough to awaken a bed partner.

• The voice is usually hoarse immediately after the episode resolves.

• Triggered by overnight acid reflux; the acid reaches the larynx. There isn’t necessarily heartburn or chest pain from the acid.

• Not eating within three hours of bedtime may eliminate or reduce laryngospasms.

Data on the Sleep Apnea Gasp
• Usually, but not always, preceded by snoring.

• The tongue falls back onto the airway, obstructing it, compressing the uvula into it as well.

• The brain, when sensing the cut-off, may arouse enough to awaken the person to full consciousness.

• Immediate relief upon awakening because consciousness activates muscles that restore proper throat function.

“With OSA breathing is restored immediately, while with laryngospasm it may take one or two breaths,” says Dale Rice, MD, professor of otolaryngology-head and neck surgery, Keck School of Medicine USC.

• There may be residual micro-gasps for a few moments, but by and large, one good gulp of air is often all it takes to restore normality.

• Sitting upright also instantly corrects the problem because it immediately reverses the effect that the lying (supine) position has on collapsible throat structures.

• No stridor or hoarse voice.

• In general, a sleep apnea gasp is corrected during consciousness much faster than is a laryngospasm.

• Not responsive to avoiding food before bedtime.

Do not attempt to diagnose yourself. THERE IS OVERLAP between the laryngospasm and sleep apnea gasp.

Speak to your doctor about a polysomnography (sleep study), which is the gold standard for diagnosing disordered breathing.

Dr. Rice’s areas of interest include sinus disease, endoscopic sinus surgery, head and neck cancer, and skull base surgery.
Lorra Garrick has been covering medical, fitness and cybersecurity topics for many years, having written thousands of articles for print magazines and websites, including as a ghostwriter. She’s also a former ACE-certified personal trainer.  
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webmd.com/heartburn-gerd/guide/laryngospasm-causes-symptoms-and-treatments#2
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scielo.br/pdf/anp/v53n1/08 gasp
researchgate.net/profile/Samuel_Henz/publication/13909783_Sleep-related_laryngospasm/links/09e415093e24828d5c000000/Sleep-related-laryngospasm.pdf
sciencedirect.com/science/article/pii/S0140673608616220
health.clevelandclinic.org/2015/05/do-you-snore-how-sleep-apnea-can-hurt-your-heart/ gasp